From 93bbcaebbfdbaf082becbdce5d1e4c6a7b92a336 Mon Sep 17 00:00:00 2001
From: 28810 <28810@YEXIANGQIN>
Date: Tue, 4 Jun 2019 10:56:14 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A4=84=E7=90=86=20=E9=9D=9E=E6=AD=A3?=
 =?UTF-8?q?=E5=B8=B8=20Provider=20GC=20=E5=8F=AF=E8=83=BD=E4=B8=BA=20null?=
 =?UTF-8?q?=20=E7=9A=84=E9=94=99=E8=AF=AF?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 Providers/FreeSql.Provider.MySql/MySqlProvider.cs           | 2 +-
 Providers/FreeSql.Provider.Oracle/OracleProvider.cs         | 2 +-
 Providers/FreeSql.Provider.PostgreSQL/PostgreSQLProvider.cs | 2 +-
 Providers/FreeSql.Provider.SqlServer/SqlServerProvider.cs   | 2 +-
 Providers/FreeSql.Provider.Sqlite/SqliteProvider.cs         | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/Providers/FreeSql.Provider.MySql/MySqlProvider.cs b/Providers/FreeSql.Provider.MySql/MySqlProvider.cs
index 2e032f27..461274fc 100644
--- a/Providers/FreeSql.Provider.MySql/MySqlProvider.cs
+++ b/Providers/FreeSql.Provider.MySql/MySqlProvider.cs
@@ -71,7 +71,7 @@ namespace FreeSql.MySql {
 		bool _isdisposed = false;
 		public void Dispose() {
 			if (_isdisposed) return;
-			(this.Ado as AdoProvider).Dispose();
+			(this.Ado as AdoProvider)?.Dispose();
 		}
 	}
 }
diff --git a/Providers/FreeSql.Provider.Oracle/OracleProvider.cs b/Providers/FreeSql.Provider.Oracle/OracleProvider.cs
index 2f2e7f44..16ae24c3 100644
--- a/Providers/FreeSql.Provider.Oracle/OracleProvider.cs
+++ b/Providers/FreeSql.Provider.Oracle/OracleProvider.cs
@@ -48,7 +48,7 @@ namespace FreeSql.Oracle {
 		bool _isdisposed = false;
 		public void Dispose() {
 			if (_isdisposed) return;
-			(this.Ado as AdoProvider).Dispose();
+			(this.Ado as AdoProvider)?.Dispose();
 		}
 	}
 }
diff --git a/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLProvider.cs b/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLProvider.cs
index bca60aa3..7f73ee10 100644
--- a/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLProvider.cs
+++ b/Providers/FreeSql.Provider.PostgreSQL/PostgreSQLProvider.cs
@@ -98,7 +98,7 @@ namespace FreeSql.PostgreSQL {
 		bool _isdisposed = false;
 		public void Dispose() {
 			if (_isdisposed) return;
-			(this.Ado as AdoProvider).Dispose();
+			(this.Ado as AdoProvider)?.Dispose();
 		}
 	}
 }
diff --git a/Providers/FreeSql.Provider.SqlServer/SqlServerProvider.cs b/Providers/FreeSql.Provider.SqlServer/SqlServerProvider.cs
index a2d03c74..f6abcc0d 100644
--- a/Providers/FreeSql.Provider.SqlServer/SqlServerProvider.cs
+++ b/Providers/FreeSql.Provider.SqlServer/SqlServerProvider.cs
@@ -55,7 +55,7 @@ namespace FreeSql.SqlServer {
 		bool _isdisposed = false;
 		public void Dispose() {
 			if (_isdisposed) return;
-			(this.Ado as AdoProvider).Dispose();
+			(this.Ado as AdoProvider)?.Dispose();
 		}
 	}
 }
diff --git a/Providers/FreeSql.Provider.Sqlite/SqliteProvider.cs b/Providers/FreeSql.Provider.Sqlite/SqliteProvider.cs
index cfb02e77..73948db3 100644
--- a/Providers/FreeSql.Provider.Sqlite/SqliteProvider.cs
+++ b/Providers/FreeSql.Provider.Sqlite/SqliteProvider.cs
@@ -47,7 +47,7 @@ namespace FreeSql.Sqlite {
 		bool _isdisposed = false;
 		public void Dispose() {
 			if (_isdisposed) return;
-			(this.Ado as AdoProvider).Dispose();
+			(this.Ado as AdoProvider)?.Dispose();
 		}
 	}
 }