增加虚谷支持,基础版本

Providers/FreeSql.Provider.Xugu/XuguExtensions.cs

@@ -0,0 +1,20 @@
+using FreeSql;
+using FreeSql.Xugu.Curd;
+using System.Data;
+using System.Linq.Expressions;
+using System.Text;
+using XuguClient;
+
+public static partial class FreeSqlXuguGlobalExtensions
+{
+
+    /// <summary>
+    /// 特殊处理类似 string.Format 的使用方法，防止注入，以及 IS NULL 转换
+    /// </summary>
+    /// <param name="that"></param>
+    /// <param name="args"></param>
+    /// <returns></returns>
+    public static string FormatXuguSQL(this string that, params object[] args) => _xgsqlAdo.Addslashes(that, args);
+    static FreeSql.Xugu.XuguAdo _xgsqlAdo = new FreeSql.Xugu.XuguAdo();
+     
+}