- 优化 实体基类的属性位置，优先排在最前面； #164

- 整理 实体类 Ctor 有构造函数的映射处理；#164 [wiki](https://github.com/2881099/FreeSql/wiki/%e8%bf%94%e5%9b%9e%e6%95%b0%e6%8d%ae#dto-%E6%98%A0%E5%B0%84%E6%9F%A5%E8%AF%A2)
- 优化 实体属性，支持 protected set 属性；#164

FreeSql.DbContext/Extensions/DependencyInjection.cs

@@ -15,7 +15,7 @@ namespace FreeSql
                 DbContext ctx = null;
                 try
                 {
-                    var ctor = dbContextType.GetConstructors().FirstOrDefault();
+                    var ctor = dbContextType. GetConstructors().FirstOrDefault();
                     var ctorParams = ctor.GetParameters().Select(a => sp.GetService(a.ParameterType)).ToArray();
                     ctx = Activator.CreateInstance(dbContextType, ctorParams) as DbContext;
                 }

FreeSql.DbContext/FreeSql.DbContext.xml

@@ -110,13 +110,6 @@
             清空状态数据
             </summary>
         </member>
-        <member name="M:FreeSql.DbSet`1.RemoveAsync(System.Linq.Expressions.Expression{System.Func{`0,System.Boolean}})">
-            <summary>
-            根据 lambda 条件删除数据
-            </summary>
-            <param name="predicate"></param>
-            <returns></returns>
-        </member>
         <member name="M:FreeSql.DbSet`1.Add(`0)">
             <summary>
             添加

FreeSql.Tests/FreeSql.Tests/MySql/Curd/MySqlSelectTest.cs

@@ -1056,6 +1056,23 @@ WHERE (((cast(a.`Id` as char)) in (SELECT b.`Title`
                     a.Id,
                     a.Clicks
                 });
+
+            Assert.Equal(@"SELECT a.`Id` as1, a.`Clicks` as2 
+FROM (SELECT  * from (SELECT a.`Id` Id, a.`Clicks` Clicks 
+FROM `tb_topic_1` a) ftb 
+
+UNION ALL
+
+SELECT  * from (SELECT a.`Id` Id, a.`Clicks` Clicks 
+FROM `tb_topic_2` a) ftb) a 
+limit 0,20", select
+                .AsTable((type, old) => type == typeof(Topic) ? $"({sqlsss})" : null)
+                .Page(1, 20)
+                .ToSql(a => new
+                {
+                    a.Id,
+                    a.Clicks
+                }));
         }
 
         public class TestInclude_OneToManyModel1

FreeSql.Tests/FreeSql.Tests/MySql/MySqlCodeFirstTest.cs

@@ -17,11 +17,7 @@ namespace FreeSql.Tests.MySql
             var sql = g.mysql.CodeFirst.GetComparisonDDLStatements<<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD>2>();
             g.mysql.CodeFirst.SyncStructure<<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD>2>();
 
-            var item = new <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD>2
+            var item = <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD>2.Create("<22><><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD>", DateTime.Now);
-            {
-                <EFBFBD><EFBFBD><EFBFBD><EFBFBD> = "<22><><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD>",
-                <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD> = DateTime.Now
-            };
             Assert.Equal(1, g.mysql.Insert<<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD>2>().AppendData(item).ExecuteAffrows());
             Assert.NotEqual(Guid.Empty, item.<EFBFBD><EFBFBD><EFBFBD><EFBFBD>);
             var item2 = g.mysql.Select<<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD>2>().Where(a => a.<EFBFBD><EFBFBD><EFBFBD><EFBFBD> == item.<EFBFBD><EFBFBD><EFBFBD><EFBFBD>).First();
@@ -32,12 +28,17 @@ namespace FreeSql.Tests.MySql
         class <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD>2
         {
             [Column(IsPrimary = true)]
-            public Guid <EFBFBD><EFBFBD><EFBFBD><EFBFBD> { get; set; }
+            public Guid <EFBFBD><EFBFBD><EFBFBD><EFBFBD> { get; protected set; }
 
-            public string <EFBFBD><EFBFBD><EFBFBD><EFBFBD> { get; set; }
+            public string <EFBFBD><EFBFBD><EFBFBD><EFBFBD> { get; protected set; }
 
             [Column(ServerTime = DateTimeKind.Local)]
-            public DateTime <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD> { get; set; }
+            public DateTime <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD> { get; protected set; }
+
+            public static <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD>2 Create(string title, DateTime ctm)
+            {
+                return new <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD>2 { <EFBFBD><EFBFBD><EFBFBD><EFBFBD> = title, <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD> = ctm };
+            }
         }
 
         [Fact]

FreeSql/Extensions/FreeSqlGlobalExtensions.cs

@@ -47,21 +47,35 @@ public static partial class FreeSqlGlobalExtensions
     public static bool IsArrayOrList(this Type that) => that == null ? false : (that.IsArray || typeof(IList).IsAssignableFrom(that));
     public static Type NullableTypeOrThis(this Type that) => that?.IsNullableType() == true ? that.GetGenericArguments().First() : that;
     internal static string NotNullAndConcat(this string that, params object[] args) => string.IsNullOrEmpty(that) ? null : string.Concat(new object[] { that }.Concat(args));
-    static ConcurrentDictionary<Type, ParameterInfo[]> _dicGetDefaultValueFirstConstructorsParameters = new ConcurrentDictionary<Type, ParameterInfo[]>();
     public static object CreateInstanceGetDefaultValue(this Type that)
     {
         if (that == null) return null;
         if (that == typeof(string)) return default(string);
         if (that.IsArray) return Array.CreateInstance(that, 0);
-        var ctorParms = _dicGetDefaultValueFirstConstructorsParameters.GetOrAdd(that, tp => tp.GetConstructors().FirstOrDefault()?.GetParameters());
+        var ctorParms = that.InternalGetTypeConstructor0OrFirst(false)?.GetParameters();
         if (ctorParms == null || ctorParms.Any() == false) return Activator.CreateInstance(that, null);
         return Activator.CreateInstance(that, ctorParms.Select(a => Activator.CreateInstance(a.ParameterType, null)).ToArray());
     }
+    internal static NewExpression InternalNewExpression(this Type that)
+    {
+        var ctor = that.InternalGetTypeConstructor0OrFirst();
+        return Expression.New(ctor, ctor.GetParameters().Select(a => Expression.Constant(a.ParameterType.CreateInstanceGetDefaultValue(), a.ParameterType)));
+    }
+
+    static ConcurrentDictionary<Type, ConstructorInfo> _dicInternalGetTypeConstructor0OrFirst = new ConcurrentDictionary<Type, ConstructorInfo>();
+    internal static ConstructorInfo InternalGetTypeConstructor0OrFirst(this Type that, bool isThrow = true)
+    {
+        var ret = _dicInternalGetTypeConstructor0OrFirst.GetOrAdd(that, tp =>
+            tp.GetConstructor(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic, null, new Type[0], null) ??
+            tp.GetConstructors(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic).FirstOrDefault());
+        if (ret == null && isThrow) throw new ArgumentException($"{that.FullName} 类型无方法访问构造函数");
+        return ret;
+    }
 
     static ConcurrentDictionary<Type, Dictionary<string, PropertyInfo>> _dicGetPropertiesDictIgnoreCase = new ConcurrentDictionary<Type, Dictionary<string, PropertyInfo>>();
     public static Dictionary<string, PropertyInfo> GetPropertiesDictIgnoreCase(this Type that) => that == null ? null : _dicGetPropertiesDictIgnoreCase.GetOrAdd(that, tp =>
     {
-        var props = that.GetProperties();
+        var props = that.GetProperties().GroupBy(p => p.DeclaringType).Reverse().SelectMany(p => p); //将基类的属性位置放在前面 #164
         var dict = new Dictionary<string, PropertyInfo>(StringComparer.CurrentCultureIgnoreCase);
         foreach (var prop in props)
         {

FreeSql/Internal/CommonExpression.cs

@@ -52,7 +52,8 @@ namespace FreeSql.Internal
                         var constExpValue = constExp.Value?.ToString() ?? "NULL";
                         if (constExpValue == string.Empty) constExpValue = _common.FormatSql("{0}", "");
                         parent.DbField = constExpValue;
-                    } else
+                    }
+                    else
                         parent.DbField = _common.FormatSql("{0}", constExp?.Value);
                     field.Append(", ").Append(parent.DbField);
                     if (index >= 0) field.Append(" as").Append(++index);
@@ -82,8 +83,8 @@ namespace FreeSql.Internal
                         var map = new List<SelectColumnInfo>();
                         ExpressionSelectColumn_MemberAccess(_tables, map, SelectTableInfoType.From, exp, true, getSelectGroupingMapString);
                         var tb = parent.Table = map.First().Table.Table;
-                        parent.Consturctor = tb.Type.GetConstructor(new Type[0]);
+                        parent.CsType = tb.Type;
-                        parent.ConsturctorType = ReadAnonymousTypeInfoConsturctorType.Properties;
+                        parent.Consturctor = tb.Type.InternalGetTypeConstructor0OrFirst();
                         parent.IsEntity = true;
                         for (var idx = 0; idx < map.Count; idx++)
                         {
@@ -113,10 +114,25 @@ namespace FreeSql.Internal
                     return false;
                 case ExpressionType.MemberInit:
                     var initExp = exp as MemberInitExpression;
-                    parent.Consturctor = initExp.NewExpression.Type.GetConstructors()[0];
+                    parent.CsType = initExp.Type;
-                    parent.ConsturctorType = ReadAnonymousTypeInfoConsturctorType.Properties;
+                    parent.Consturctor = initExp.NewExpression.Constructor;
-
+                    if (initExp.NewExpression?.Arguments.Count > 0)
-                    if (isAllDtoMap && _tables != null && _tables.Any() && initExp.NewExpression.Type != _tables.FirstOrDefault().Table.Type)
+                    {
+                        //处理构造参数
+                        for (var a = 0; a < initExp.NewExpression.Arguments.Count; a++)
+                        {
+                            var child = new ReadAnonymousTypeInfo
+                            {
+                                Property = null,
+                                CsName = initExp.NewExpression.Members[a].Name,
+                                CsType = initExp.NewExpression.Arguments[a].Type,
+                                MapType = initExp.NewExpression.Arguments[a].Type
+                            };
+                            parent.Childs.Add(child);
+                            ReadAnonymousField(_tables, field, child, ref index, initExp.NewExpression.Arguments[a], getSelectGroupingMapString, whereCascadeExpression, false);
+                        }
+                    }
+                    else if (isAllDtoMap && _tables != null && _tables.Any() && initExp.NewExpression.Type != _tables.FirstOrDefault().Table.Type)
                     {
                         //dto 映射
                         var dtoProps = initExp.NewExpression.Type.GetPropertiesDictIgnoreCase().Values;
@@ -124,8 +140,9 @@ namespace FreeSql.Internal
                         {
                             foreach (var dtTb in _tables)
                             {
-                                if (dtTb.Table.Columns.TryGetValue(dtoProp.Name, out var trydtocol))
+                                if (dtTb.Table.Columns.TryGetValue(dtoProp.Name, out var trydtocol) == false) continue;
-                                {
+                                if (trydtocol.Attribute.IsIgnore == true) continue;
+
                                 var child = new ReadAnonymousTypeInfo
                                 {
                                     Property = dtoProp,
@@ -146,7 +163,6 @@ namespace FreeSql.Internal
                             }
                         }
                     }
-                    }
                     if (initExp.Bindings?.Count > 0)
                     {
                         //指定 dto映射
@@ -169,15 +185,27 @@ namespace FreeSql.Internal
                     return true;
                 case ExpressionType.New:
                     var newExp = exp as NewExpression;
-                    parent.Consturctor = newExp.Type.GetConstructors()[0];
+                    parent.CsType = newExp.Type;
-                    parent.ConsturctorType = ReadAnonymousTypeInfoConsturctorType.Arguments;
+                    parent.Consturctor = newExp.Constructor;
-                    if (newExp.Members?.Count > 0)
+                    if (newExp.Arguments?.Count > 0 &&
+                        (
+                            newExp.Type.IsAnonymousType() ||
+                            newExp.Arguments.Any(a =>
                             {
-                        for (var a = 0; a < newExp.Members.Count; a++)
+                                if (a.NodeType != ExpressionType.Constant) return true;
+                                var constVal = (a as ConstantExpression)?.Value;
+                                if (constVal == null) return true;
+                                if (object.Equals(constVal, a.Type.CreateInstanceGetDefaultValue()) == false) return true;
+                                return false;
+                            })
+                        ))
+                    {
+                        //处理构造参数
+                        for (var a = 0; a < newExp.Arguments.Count; a++)
                         {
                             var child = new ReadAnonymousTypeInfo
                             {
-                                Property = newExp.Type.GetProperty(newExp.Members[a].Name, BindingFlags.Public | BindingFlags.IgnoreCase | BindingFlags.Instance),
+                                Property = null,
                                 CsName = newExp.Members[a].Name,
                                 CsType = newExp.Arguments[a].Type,
                                 MapType = newExp.Arguments[a].Type
@@ -188,15 +216,16 @@ namespace FreeSql.Internal
                     }
                     else
                     {
+                        parent.IsDefaultCtor = true;
                         //dto 映射
-                        parent.ConsturctorType = ReadAnonymousTypeInfoConsturctorType.Properties;
                         var dtoProps2 = newExp.Type.GetPropertiesDictIgnoreCase().Values;
                         foreach (var dtoProp in dtoProps2)
                         {
                             foreach (var dtTb in _tables)
                             {
-                                if (dtTb.Table.ColumnsByCs.TryGetValue(dtoProp.Name, out var trydtocol))
+                                if (dtTb.Table.ColumnsByCs.TryGetValue(dtoProp.Name, out var trydtocol) == false) continue;
-                                {
+                                if (trydtocol.Attribute.IsIgnore == true) continue;
+
                                 var child = new ReadAnonymousTypeInfo
                                 {
                                     Property = dtoProp,
@@ -218,7 +247,6 @@ namespace FreeSql.Internal
                         }
                     }
                     if (parent.Childs.Any() == false) throw new Exception($"映射异常：{newExp.Type.Name} 没有一个属性名相同");
-                    }
                     return true;
             }
             parent.DbField = $"({ExpressionLambdaToSql(exp, getTSC())})";
@@ -247,21 +275,20 @@ namespace FreeSql.Internal
                     objval = Utils.GetDataReaderValue(parent.Property.PropertyType, objval);
                 return objval;
             }
-            switch (parent.ConsturctorType)
+            var ctorParmsLength = 0;
+            object ret;
+            if (parent.IsDefaultCtor || parent.IsEntity || (ctorParmsLength = parent.Consturctor.GetParameters()?.Length ?? 0) == 0)
+                ret = parent.CsType?.CreateInstanceGetDefaultValue() ?? parent.Consturctor.Invoke(null);
+            else
             {
-                case ReadAnonymousTypeInfoConsturctorType.Arguments:
+                var ctorParms = new object[ctorParmsLength];
-                    var args = new object[parent.Childs.Count];
+                for (var c = 0; c < ctorParmsLength; c++)
-                    for (var a = 0; a < parent.Childs.Count; a++)
+                    ctorParms[c] = ReadAnonymous(parent.Childs[c], dr, ref index, notRead, null);
-                    {
+                ret = parent.Consturctor.Invoke(ctorParms);
-                        var objval = ReadAnonymous(parent.Childs[a], dr, ref index, notRead, null);
-                        if (notRead == false)
-                            args[a] = objval;
             }
-                    return parent.Consturctor.Invoke(args);
+
-                case ReadAnonymousTypeInfoConsturctorType.Properties:
-                    var ret = parent.Consturctor.Invoke(null);
             var isnull = notRead;
-                    for (var b = 0; b < parent.Childs.Count; b++)
+            for (var b = ctorParmsLength; b < parent.Childs.Count; b++)
             {
                 var prop = parent.Childs[b].Property;
                 var dbval = parent.IsEntity ? new ReadAnonymousDbValueRef() : null;
@@ -273,8 +300,6 @@ namespace FreeSql.Internal
             }
             return isnull ? null : ret;
         }
-            return null;
-        }
         public class ReadAnonymousDbValueRef
         {
             public object DbValue { get; set; }

FreeSql/Internal/CommonProvider/SelectProvider/Select0Provider.cs

@@ -546,7 +546,6 @@ namespace FreeSql.Internal.CommonProvider
             _commonExpression.ReadAnonymousField(_tables, field, map, ref index, newexp, null, _whereCascadeExpression, true);
             return (map, field.Length > 0 ? field.Remove(0, 2).ToString() : null);
         }
-        static ConcurrentDictionary<Type, ConstructorInfo> _dicConstructor = new ConcurrentDictionary<Type, ConstructorInfo>();
         static ConcurrentDictionary<string, GetAllFieldExpressionTreeInfo> _dicGetAllFieldExpressionTree = new ConcurrentDictionary<string, GetAllFieldExpressionTreeInfo>();
         public class GetAllFieldExpressionTreeInfo
         {
@@ -568,9 +567,8 @@ namespace FreeSql.Internal.CommonProvider
                 var readExpValue = Expression.MakeMemberAccess(readExp, Utils.RowInfo.PropertyValue);
                 var readExpDataIndex = Expression.MakeMemberAccess(readExp, Utils.RowInfo.PropertyDataIndex);
                 var blockExp = new List<Expression>();
-                var ctor = type.GetConstructor(new Type[0]) ?? type.GetConstructors().First();
                 blockExp.AddRange(new Expression[] {
-                    Expression.Assign(retExp, Expression.New(ctor, ctor.GetParameters().Select(a => Expression.Default(a.ParameterType)))),
+                    Expression.Assign(retExp, type.InternalNewExpression()),
                     Expression.Assign(dataIndexExp, Expression.Constant(0))
                 });
                 //typeof(Topic).GetMethod("get_Type").IsVirtual
@@ -711,9 +709,8 @@ namespace FreeSql.Internal.CommonProvider
                 var readExpValue = Expression.MakeMemberAccess(readExp, Utils.RowInfo.PropertyValue);
                 var readExpDataIndex = Expression.MakeMemberAccess(readExp, Utils.RowInfo.PropertyDataIndex);
                 var blockExp = new List<Expression>();
-                var ctor = type.GetConstructor(new Type[0]) ?? type.GetConstructors().First();
                 blockExp.AddRange(new Expression[] {
-                    Expression.Assign(retExp, Expression.New(ctor, ctor.GetParameters().Select(a => Expression.Default(a.ParameterType)))),
+                    Expression.Assign(retExp, type.InternalNewExpression()),
                     Expression.Assign(dataIndexExp, Expression.Constant(0))
                 });
                 //typeof(Topic).GetMethod("get_Type").IsVirtual
@@ -762,7 +759,7 @@ namespace FreeSql.Internal.CommonProvider
                         }
                     }
                     //只读到二级属性
-                    var propGetSetMethod = prop.GetSetMethod();
+                    var propGetSetMethod = prop.GetSetMethod(true);
                     Expression readExpAssign = null; //加速缓存
                     if (prop.PropertyType.IsArray) readExpAssign = Expression.New(Utils.RowInfo.Constructor,
                         Utils.GetDataReaderValueBlockExpression(prop.PropertyType, Expression.Call(rowExp, Utils.MethodDataReaderGetValue, dataIndexExp)),
@@ -836,9 +833,9 @@ namespace FreeSql.Internal.CommonProvider
         protected (ReadAnonymousTypeInfo map, string field) GetAllFieldReflection()
         {
             var tb1 = _tables.First().Table;
-            var type = tb1.Type;
+            var type = tb1.TypeLazy ?? tb1.Type;
-            var constructor = _dicConstructor.GetOrAdd(type, s => type.GetConstructor(new Type[0]));
+            var constructor = type.InternalGetTypeConstructor0OrFirst();
-            var map = new ReadAnonymousTypeInfo { Consturctor = constructor, ConsturctorType = ReadAnonymousTypeInfoConsturctorType.Properties };
+            var map = new ReadAnonymousTypeInfo { CsType = type, Consturctor = constructor, IsEntity = true };
 
             var field = new StringBuilder();
             var dicfield = new Dictionary<string, bool>();
@@ -862,8 +859,9 @@ namespace FreeSql.Internal.CommonProvider
                     var tb2 = _tables.Where(a => a.Table.Type == p.PropertyType && a.Alias.Contains(p.Name)).FirstOrDefault();
                     if (tb2 == null && ps.Where(pw => pw.Value.PropertyType == p.PropertyType).Count() == 1) tb2 = _tables.Where(a => a.Table.Type == p.PropertyType).FirstOrDefault();
                     if (tb2 == null) continue;
-                    child.Consturctor = tb2.Table.Type.GetConstructor(new Type[0]);
+                    child.CsType = (tb2.Table.TypeLazy ?? tb2.Table.Type);
-                    child.ConsturctorType = ReadAnonymousTypeInfoConsturctorType.Properties;
+                    child.Consturctor = child.CsType.InternalGetTypeConstructor0OrFirst();
+                    child.IsEntity = true;
                     foreach (var col2 in tb2.Table.Columns.Values)
                     {
                         if (index > 0) field.Append(", ");

FreeSql/Internal/CommonProvider/SelectProvider/Select10Provider.cs

@@ -101,8 +101,8 @@ namespace FreeSql.Internal.CommonProvider
         List<TDto> ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>.ToList<TDto>() => (this as ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>).ToList(GetToListDtoSelector<TDto>());
         Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TDto>> GetToListDtoSelector<TDto>()
         {
-            var ctor = typeof(TDto).GetConstructor(new Type[0]);
+            return Expression.Lambda<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TDto>>(
-            return Expression.Lambda<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TDto>>(Expression.New(ctor),
+                typeof(TDto).InternalNewExpression(),
                 _tables[0].Parameter ?? Expression.Parameter(typeof(T1), "a"),
                 Expression.Parameter(typeof(T2), "b"),
                 Expression.Parameter(typeof(T3), "c"),

FreeSql/Internal/CommonProvider/SelectProvider/Select1Provider.cs

@@ -172,8 +172,8 @@ namespace FreeSql.Internal.CommonProvider
         public List<TDto> ToList<TDto>() => ToList(GetToListDtoSelector<TDto>());
         Expression<Func<T1, TDto>> GetToListDtoSelector<TDto>()
         {
-            var ctor = typeof(TDto).GetConstructor(new Type[0]);
+            return Expression.Lambda<Func<T1, TDto>>(
-            return Expression.Lambda<Func<T1, TDto>>(Expression.New(ctor),
+                typeof(TDto).InternalNewExpression(),
                 _tables[0].Parameter ?? Expression.Parameter(typeof(T1), "a"));
         }
 
@@ -884,8 +884,9 @@ namespace FreeSql.Internal.CommonProvider
                             {
                                 var field = new StringBuilder();
                                 var read = new ReadAnonymousTypeInfo();
-                                read.ConsturctorType = ReadAnonymousTypeInfoConsturctorType.Properties;
+                                read.CsType = (tbrefMid.TypeLazy ?? tbrefMid.Type);
-                                read.Consturctor = (tbrefMid.TypeLazy ?? tbrefMid.Type).GetConstructor(new Type[0]);
+                                read.Consturctor = read.CsType.InternalGetTypeConstructor0OrFirst();
+                                read.IsEntity = true;
                                 read.Table = tbrefMid;
                                 foreach (var col in tbrefMid.Columns.Values)
                                 {

FreeSql/Internal/CommonProvider/SelectProvider/Select2Provider.cs

@@ -86,8 +86,8 @@ namespace FreeSql.Internal.CommonProvider
         List<TDto> ISelect<T1, T2>.ToList<TDto>() => (this as ISelect<T1, T2>).ToList(GetToListDtoSelector<TDto>());
         Expression<Func<T1, T2, TDto>> GetToListDtoSelector<TDto>()
         {
-            var ctor = typeof(TDto).GetConstructor(new Type[0]);
+            return Expression.Lambda<Func<T1, T2, TDto>>(
-            return Expression.Lambda<Func<T1, T2, TDto>>(Expression.New(ctor),
+                typeof(TDto).InternalNewExpression(),
                 _tables[0].Parameter ?? Expression.Parameter(typeof(T1), "a"),
                 Expression.Parameter(typeof(T2), "b"));
         }

FreeSql/Internal/CommonProvider/SelectProvider/Select3Provider.cs

@@ -88,8 +88,8 @@ namespace FreeSql.Internal.CommonProvider
         List<TDto> ISelect<T1, T2, T3>.ToList<TDto>() => (this as ISelect<T1, T2, T3>).ToList(GetToListDtoSelector<TDto>());
         Expression<Func<T1, T2, T3, TDto>> GetToListDtoSelector<TDto>()
         {
-            var ctor = typeof(TDto).GetConstructor(new Type[0]);
+            return Expression.Lambda<Func<T1, T2, T3, TDto>>(
-            return Expression.Lambda<Func<T1, T2, T3, TDto>>(Expression.New(ctor),
+                typeof(TDto).InternalNewExpression(),
                 _tables[0].Parameter ?? Expression.Parameter(typeof(T1), "a"),
                 Expression.Parameter(typeof(T2), "b"),
                 Expression.Parameter(typeof(T3), "c"));

FreeSql/Internal/CommonProvider/SelectProvider/Select4Provider.cs

@@ -90,8 +90,8 @@ namespace FreeSql.Internal.CommonProvider
         List<TDto> ISelect<T1, T2, T3, T4>.ToList<TDto>() => (this as ISelect<T1, T2, T3, T4>).ToList(GetToListDtoSelector<TDto>());
         Expression<Func<T1, T2, T3, T4, TDto>> GetToListDtoSelector<TDto>()
         {
-            var ctor = typeof(TDto).GetConstructor(new Type[0]);
+            return Expression.Lambda<Func<T1, T2, T3, T4, TDto>>(
-            return Expression.Lambda<Func<T1, T2, T3, T4, TDto>>(Expression.New(ctor),
+                typeof(TDto).InternalNewExpression(),
                 _tables[0].Parameter ?? Expression.Parameter(typeof(T1), "a"),
                 Expression.Parameter(typeof(T2), "b"),
                 Expression.Parameter(typeof(T3), "c"),

FreeSql/Internal/CommonProvider/SelectProvider/Select5Provider.cs

@@ -92,8 +92,8 @@ namespace FreeSql.Internal.CommonProvider
         List<TDto> ISelect<T1, T2, T3, T4, T5>.ToList<TDto>() => (this as ISelect<T1, T2, T3, T4, T5>).ToList(GetToListDtoSelector<TDto>());
         Expression<Func<T1, T2, T3, T4, T5, TDto>> GetToListDtoSelector<TDto>()
         {
-            var ctor = typeof(TDto).GetConstructor(new Type[0]);
+            return Expression.Lambda<Func<T1, T2, T3, T4, T5, TDto>>(
-            return Expression.Lambda<Func<T1, T2, T3, T4, T5, TDto>>(Expression.New(ctor),
+                typeof(TDto).InternalNewExpression(),
                 _tables[0].Parameter ?? Expression.Parameter(typeof(T1), "a"),
                 Expression.Parameter(typeof(T2), "b"),
                 Expression.Parameter(typeof(T3), "c"),

FreeSql/Internal/CommonProvider/SelectProvider/Select6Provider.cs

@@ -94,8 +94,8 @@ namespace FreeSql.Internal.CommonProvider
         List<TDto> ISelect<T1, T2, T3, T4, T5, T6>.ToList<TDto>() => (this as ISelect<T1, T2, T3, T4, T5, T6>).ToList(GetToListDtoSelector<TDto>());
         Expression<Func<T1, T2, T3, T4, T5, T6, TDto>> GetToListDtoSelector<TDto>()
         {
-            var ctor = typeof(TDto).GetConstructor(new Type[0]);
+            return Expression.Lambda<Func<T1, T2, T3, T4, T5, T6, TDto>>(
-            return Expression.Lambda<Func<T1, T2, T3, T4, T5, T6, TDto>>(Expression.New(ctor),
+                typeof(TDto).InternalNewExpression(),
                 _tables[0].Parameter ?? Expression.Parameter(typeof(T1), "a"),
                 Expression.Parameter(typeof(T2), "b"),
                 Expression.Parameter(typeof(T3), "c"),

FreeSql/Internal/CommonProvider/SelectProvider/Select7Provider.cs

@@ -96,8 +96,8 @@ namespace FreeSql.Internal.CommonProvider
         List<TDto> ISelect<T1, T2, T3, T4, T5, T6, T7>.ToList<TDto>() => (this as ISelect<T1, T2, T3, T4, T5, T6, T7>).ToList(GetToListDtoSelector<TDto>());
         Expression<Func<T1, T2, T3, T4, T5, T6, T7, TDto>> GetToListDtoSelector<TDto>()
         {
-            var ctor = typeof(TDto).GetConstructor(new Type[0]);
+            return Expression.Lambda<Func<T1, T2, T3, T4, T5, T6, T7, TDto>>(
-            return Expression.Lambda<Func<T1, T2, T3, T4, T5, T6, T7, TDto>>(Expression.New(ctor),
+                typeof(TDto).InternalNewExpression(),
                 _tables[0].Parameter ?? Expression.Parameter(typeof(T1), "a"),
                 Expression.Parameter(typeof(T2), "b"),
                 Expression.Parameter(typeof(T3), "c"),

FreeSql/Internal/CommonProvider/SelectProvider/Select8Provider.cs

@@ -99,8 +99,8 @@ namespace FreeSql.Internal.CommonProvider
 
         Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, TDto>> GetToListDtoSelector<TDto>()
         {
-            var ctor = typeof(TDto).GetConstructor(new Type[0]);
+            return Expression.Lambda<Func<T1, T2, T3, T4, T5, T6, T7, T8, TDto>>(
-            return Expression.Lambda<Func<T1, T2, T3, T4, T5, T6, T7, T8, TDto>>(Expression.New(ctor),
+                typeof(TDto).InternalNewExpression(),
                 _tables[0].Parameter ?? Expression.Parameter(typeof(T1), "a"),
                 Expression.Parameter(typeof(T2), "b"),
                 Expression.Parameter(typeof(T3), "c"),

FreeSql/Internal/CommonProvider/SelectProvider/Select9Provider.cs

@@ -99,8 +99,8 @@ namespace FreeSql.Internal.CommonProvider
         List<TDto> ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9>.ToList<TDto>() => (this as ISelect<T1, T2, T3, T4, T5, T6, T7, T8, T9>).ToList(GetToListDtoSelector<TDto>());
         Expression<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TDto>> GetToListDtoSelector<TDto>()
         {
-            var ctor = typeof(TDto).GetConstructor(new Type[0]);
+            return Expression.Lambda<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TDto>>(
-            return Expression.Lambda<Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TDto>>(Expression.New(ctor),
+                typeof(TDto).InternalNewExpression(),
                 _tables[0].Parameter ?? Expression.Parameter(typeof(T1), "a"),
                 Expression.Parameter(typeof(T2), "b"),
                 Expression.Parameter(typeof(T3), "c"),

FreeSql/Internal/Model/ReadAnonymousTypeInfo.cs

@@ -13,10 +13,9 @@ namespace FreeSql.Internal.Model
         public Type MapType { get; set; }
         public string DbField { get; set; }
         public ConstructorInfo Consturctor { get; set; }
-        public ReadAnonymousTypeInfoConsturctorType ConsturctorType { get; set; }
         public List<ReadAnonymousTypeInfo> Childs = new List<ReadAnonymousTypeInfo>();
         public TableInfo Table { get; set; }
         public bool IsEntity { get; set; }
+        public bool IsDefaultCtor { get; set; }
     }
-    public enum ReadAnonymousTypeInfoConsturctorType { Arguments, Properties }
 }

FreeSql/Internal/UtilsExpressionTree.cs

@@ -72,7 +72,7 @@ namespace FreeSql.Internal
             var columnsList = new List<ColumnInfo>();
             foreach (var p in trytb.Properties.Values)
             {
-                var setMethod = p.GetSetMethod(); //trytb.Type.GetMethod($"set_{p.Name}");
+                var setMethod = p.GetSetMethod(true); //trytb.Type.GetMethod($"set_{p.Name}");
                 var colattr = common.GetEntityColumnAttribute(entity, p);
                 var tp = common.CodeFirst.GetDbInfo(colattr?.MapType ?? p.PropertyType);
                 if (setMethod == null || (tp == null && p.PropertyType.IsValueType)) // 属性没有 set自动忽略
@@ -1200,7 +1200,7 @@ namespace FreeSql.Internal
                 this.Value = value;
                 this.DataIndex = dataIndex;
             }
-            public static ConstructorInfo Constructor = typeof(RowInfo).GetConstructor(new[] { typeof(object), typeof(int) });
+            public static ConstructorInfo Constructor = typeof(RowInfo). GetConstructor(new[] { typeof(object), typeof(int) });
             public static PropertyInfo PropertyValue = typeof(RowInfo).GetProperty("Value");
             public static PropertyInfo PropertyDataIndex = typeof(RowInfo).GetProperty("DataIndex");
         }
@@ -1342,14 +1342,15 @@ namespace FreeSql.Internal
                     var readpkvalExp = Expression.Variable(typeof(object), "isnull3val");
                     var indexesLengthExp = Expression.Variable(typeof(int), "indexesLength");
                     var blockExp = new List<Expression>();
-                    var ctor = type.GetConstructor(new Type[0]) ?? type.GetConstructors().First();
+                    var newExp = type.InternalNewExpression();
-                    var ctorParms = ctor.GetParameters();
+                    if (false && newExp.Arguments.Count > 0)
-                    if (ctorParms.Length > 0)
                     {
+                        #region 按构造参数读取数据，此功能暂时关闭
+                        /*
                         blockExp.AddRange(new Expression[] {
                             Expression.Assign(readpknullExp, Expression.Constant(false))
                         });
-                        foreach (var ctorParm in ctorParms)
+                        foreach (var ctorParm in newExp.Constructor.GetParameters())
                         {
                             if (typetb.ColumnsByCsIgnore.ContainsKey(ctorParm.Name)) continue;
                             var readType = typetb.ColumnsByCs.TryGetValue(ctorParm.Name, out var trycol) ? trycol.Attribute.MapType : ctorParm.ParameterType;
@@ -1431,14 +1432,16 @@ namespace FreeSql.Internal
                         blockExp.Add(
                             Expression.IfThen(
                                 Expression.IsFalse(readpknullExp),
-                                Expression.Assign(retExp, Expression.New(ctor, readExpValueParms))
+                                Expression.Assign(retExp, Expression.New(newExp.Constructor, readExpValueParms))
                             )
                         );
+                        */
+                        #endregion
                     }
                     else
                     {
                         blockExp.AddRange(new Expression[] {
-                        Expression.Assign(retExp, Expression.New(ctor)),
+                            Expression.Assign(retExp, newExp),
                             Expression.Assign(indexesLengthExp, Expression.Constant(0)),
                             Expression.IfThen(
                                 Expression.NotEqual(indexesExp, Expression.Constant(null)),
@@ -1459,7 +1462,7 @@ namespace FreeSql.Internal
                             var readType = typetb.ColumnsByCs.TryGetValue(prop.Name, out var trycol) ? trycol.Attribute.MapType : prop.PropertyType;
 
                             var ispkExp = new List<Expression>();
-                            var propGetSetMethod = prop.GetSetMethod();
+                            var propGetSetMethod = prop.GetSetMethod(true);
                             Expression readVal = Expression.Assign(readpkvalExp, Expression.Call(rowExp, MethodDataReaderGetValue, tryidxExp));
                             Expression readExpAssign = null; //加速缓存
                             if (readType.IsArray) readExpAssign = Expression.New(RowInfo.Constructor,
@@ -1616,7 +1619,7 @@ namespace FreeSql.Internal
         static MethodInfo MethodBigIntegerParse = typeof(Utils).GetMethod("ToBigInteger", BindingFlags.NonPublic | BindingFlags.Static, null, new[] { typeof(string) }, null);
         static PropertyInfo PropertyDateTimeOffsetDateTime = typeof(DateTimeOffset).GetProperty("DateTime", BindingFlags.Instance | BindingFlags.Public);
         static PropertyInfo PropertyDateTimeTicks = typeof(DateTime).GetProperty("Ticks", BindingFlags.Instance | BindingFlags.Public);
-        static ConstructorInfo CtorDateTimeOffsetArgsTicks = typeof(DateTimeOffset).GetConstructor(new[] { typeof(long), typeof(TimeSpan) });
+        static ConstructorInfo CtorDateTimeOffsetArgsTicks = typeof(DateTimeOffset). GetConstructor(new[] { typeof(long), typeof(TimeSpan) });
 
         public static ConcurrentBag<Func<LabelTarget, Expression, Type, Expression>> GetDataReaderValueBlockExpressionSwitchTypeFullName = new ConcurrentBag<Func<LabelTarget, Expression, Type, Expression>>();
         public static ConcurrentBag<Func<LabelTarget, Expression, Expression, Type, Expression>> GetDataReaderValueBlockExpressionObjectToStringIfThenElse = new ConcurrentBag<Func<LabelTarget, Expression, Expression, Type, Expression>>();