diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/AdoProvider/AdoProvider.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/AdoProvider/AdoProvider.cs
index fe68d7502..e5f06d829 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/AdoProvider/AdoProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/AdoProvider/AdoProvider.cs
@@ -73,6 +73,20 @@ namespace SqlSugar
         #endregion
 
         #region Connection
+        public virtual bool IsValidConnection() 
+        {
+            try
+            {
+                using (OpenAlways()) 
+                {
+                    return true;
+                }
+            }
+            catch (Exception)
+            {
+                return false;
+            }
+        }
         public virtual void Open()
         {
             CheckConnection();
diff --git a/Src/Asp.NetCore2/SqlSugar/Interface/IAdo.cs b/Src/Asp.NetCore2/SqlSugar/Interface/IAdo.cs
index ad2ae3193..eecc87dba 100644
--- a/Src/Asp.NetCore2/SqlSugar/Interface/IAdo.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Interface/IAdo.cs
@@ -164,6 +164,7 @@ namespace SqlSugar
         void Close();
         void Open();
         SugarConnection OpenAlways();
+        bool IsValidConnection();
         void CheckConnection();
 
         void BeginTran();
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlInsertBuilder.cs b/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlInsertBuilder.cs
index fbd74e066..65f0db8e0 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlInsertBuilder.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlInsertBuilder.cs
@@ -27,7 +27,8 @@ namespace SqlSugar
                 }
             }
         }
-        public override object FormatValue(object value)
+        int i = 0;
+        public  object FormatValue(object value,string name)
         {
             var n = "N";
             if (this.Context.CurrentConnectionConfig.MoreSettings != null && this.Context.CurrentConnectionConfig.MoreSettings.DisableNvarchar)
@@ -72,7 +73,10 @@ namespace SqlSugar
                 }
                 else if (type == UtilConstants.StringType || type == UtilConstants.ObjType)
                 {
-                    return n+"'" + GetString(value).ToSqlFilter() + "'";
+                    ++i;
+                    var parameterName = this.Builder.SqlParameterKeyWord + name + i;
+                    this.Parameters.Add(new SugarParameter(parameterName, value));
+                    return parameterName;
                 }
                 else
                 {
@@ -115,7 +119,7 @@ namespace SqlSugar
                 foreach (var item in groupList)
                 {
                     batchInsetrSql.Append("(");
-                    insertColumns = string.Join(",", item.Select(it => FormatValue(it.Value)));
+                    insertColumns = string.Join(",", item.Select(it => FormatValue(it.Value,it.PropertyName)));
                     batchInsetrSql.Append(insertColumns);
                     if (groupList.Last() == item)
                     {
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlUpdateBuilder.cs b/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlUpdateBuilder.cs
index 7ac30596c..1d702316b 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlUpdateBuilder.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/MySql/SqlBuilder/MySqlUpdateBuilder.cs
@@ -59,7 +59,7 @@ namespace SqlSugar
                     {
                         updateTable.Append(SqlTemplateBatchUnion);
                     }
-                    updateTable.Append("\r\n SELECT " + string.Join(",", columns.Select(it => string.Format(SqlTemplateBatchSelect, FormatValue(it.Value),this.Builder.GetTranslationColumnName(it.DbColumnName)))));
+                    updateTable.Append("\r\n SELECT " + string.Join(",", columns.Select(it => string.Format(SqlTemplateBatchSelect, FormatValue(it.Value,it.PropertyName),this.Builder.GetTranslationColumnName(it.DbColumnName)))));
                     ++i;
                 }
                 pageIndex++;
@@ -89,7 +89,8 @@ namespace SqlSugar
             }
             return batchUpdateSql.ToString();
         }
-        public override object FormatValue(object value)
+        int i = 0;
+        public  object FormatValue(object value,string name)
         {
             var n = "N";
             if (this.Context.CurrentConnectionConfig.MoreSettings != null&&this.Context.CurrentConnectionConfig.MoreSettings.DisableNvarchar)
@@ -142,7 +143,10 @@ namespace SqlSugar
                 }
                 else if (type == UtilConstants.StringType || type == UtilConstants.ObjType)
                 {
-                    return n+"'" + GetString(value).ToSqlFilter() + "'";
+                    ++i;
+                    var parameterName = this.Builder.SqlParameterKeyWord + name + i;
+                    this.Parameters.Add(new SugarParameter(parameterName, value));
+                    return parameterName;
                 }
                 else
                 {
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/SqlBuilder/OracleExpressionContext.cs b/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/SqlBuilder/OracleExpressionContext.cs
index 28e899978..23f6996e1 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/SqlBuilder/OracleExpressionContext.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/Oracle/SqlBuilder/OracleExpressionContext.cs
@@ -57,6 +57,11 @@ namespace SqlSugar
     }
     public partial class OracleMethod : DefaultDbMethod, IDbMethods
     {
+        public override string HasValue(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            return string.Format("( {0} IS NOT NULL ) ", parameter.MemberName);
+        }
 
         public override string DateDiff(MethodCallExpressionModel model)
         {