-

Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/ErrorMessage.cs

@@ -34,7 +34,7 @@ namespace SqlSugar
         {
             get
             {
-                return ErrorMessage.GetThrowMessage("Connection open error . {0}", " 连接字符串出错了，实在找不到原因请先Google错误.{0}.");
+                return ErrorMessage.GetThrowMessage("Connection open error . {0}", " 连接字符串出错了，实在找不到原因请先Google错误{0}.");
             }
         }
     }

Src/Asp.Net/SqlSugar/Realization/MySql/MySqlProvider.cs

@@ -16,6 +16,8 @@ namespace SqlSugar
             get
             {
                 if (base._DbConnection == null)
+                {
+                    try
                     {
                         var mySqlConnectionString = base.Context.CurrentConnectionConfig.ConnectionString;
                         if (!mySqlConnectionString.ToLower().Contains("charset"))
@@ -24,6 +26,11 @@ namespace SqlSugar
                         }
                         base._DbConnection = new MySqlConnection(mySqlConnectionString);
                     }
+                    catch (Exception ex)
+                    {
+                        Check.Exception(true, ErrorMessage.ConnnectionOpen, ex.Message);
+                    }
+                }
                 return base._DbConnection;
             }
             set

Src/Asp.Net/SqlSugar/Realization/Oracle/OracleProvider.cs

@@ -21,11 +21,19 @@ namespace SqlSugar
         public override IDbConnection Connection
         {
             get
+            {
+                try
                 {
                     if (base._DbConnection == null)
                     {
                         base._DbConnection = new OracleConnection(base.Context.CurrentConnectionConfig.ConnectionString);
                     }
+                }
+                catch (Exception ex)
+                {
+
+                    Check.Exception(true, ErrorMessage.ConnnectionOpen, ex.Message);
+                }
                 return base._DbConnection;
             }
             set

Src/Asp.Net/SqlSugar/Realization/SqlServer/SqlServerProvider.cs

@@ -15,9 +15,16 @@ namespace SqlSugar
             get
             {
                 if (base._DbConnection == null)
+                {
+                    try
                     {
                         base._DbConnection = new SqlConnection(base.Context.CurrentConnectionConfig.ConnectionString);
                     }
+                    catch (Exception ex)
+                    {
+                        Check.Exception(true, ErrorMessage.ConnnectionOpen, ex.Message);
+                    }
+                }
                 return base._DbConnection;
             }
             set

Src/Asp.Net/SqlSugar/Realization/Sqlite/SqliteProvider.cs

@@ -16,10 +16,17 @@ namespace SqlSugar
             get
             {
                 if (base._DbConnection == null)
+                {
+                    try
                     {
                         var SQLiteConnectionString = base.Context.CurrentConnectionConfig.ConnectionString;
                         base._DbConnection = new SQLiteConnection(SQLiteConnectionString);
                     }
+                    catch (Exception ex)
+                    {
+                        Check.Exception(true, ErrorMessage.ConnnectionOpen, ex.Message);
+                    }
+                }
                 return base._DbConnection;
             }
             set