diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/AdoProvider/AdoProvider.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/AdoProvider/AdoProvider.cs
index 196da4339..e90eb2183 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/AdoProvider/AdoProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/AdoProvider/AdoProvider.cs
@@ -31,6 +31,7 @@ namespace SqlSugar
         #endregion
 
         #region Properties
+        internal bool IsOpenAsync { get; set; }
         protected List<IDataParameter> OutputParameters { get; set; }
         public virtual string SqlParameterKeyWord { get { return "@"; } }
         public IDbTransaction Transaction { get; set; }
@@ -626,7 +627,7 @@ namespace SqlSugar
                 if (this.ProcessingEventStartingSQL != null)
                     ExecuteProcessingSQL(ref sql,ref parameters);
                 ExecuteBefore(sql, parameters);
-                var sqlCommand = GetCommand(sql, parameters);
+                var sqlCommand =IsOpenAsync? await GetCommandAsync(sql, parameters) : GetCommand(sql, parameters);
                 int count;
                 if (this.CancellationToken == null)
                     count=await sqlCommand.ExecuteNonQueryAsync();
@@ -668,7 +669,7 @@ namespace SqlSugar
                 if (this.ProcessingEventStartingSQL != null)
                     ExecuteProcessingSQL(ref sql,ref parameters);
                 ExecuteBefore(sql, parameters);
-                var sqlCommand = GetCommand(sql, parameters);
+                var sqlCommand = IsOpenAsync ? await GetCommandAsync(sql, parameters) : GetCommand(sql, parameters);
                 DbDataReader sqlDataReader;
                 if(this.CancellationToken==null)
                     sqlDataReader=await sqlCommand.ExecuteReaderAsync(this.IsAutoClose() ? CommandBehavior.CloseConnection : CommandBehavior.Default);
@@ -707,7 +708,7 @@ namespace SqlSugar
                 if (this.ProcessingEventStartingSQL != null)
                     ExecuteProcessingSQL(ref sql,ref parameters);
                 ExecuteBefore(sql, parameters);
-                var sqlCommand = GetCommand(sql, parameters);
+                var sqlCommand = IsOpenAsync ? await GetCommandAsync(sql, parameters) : GetCommand(sql, parameters);
                 object scalar;
                 if(CancellationToken==null)
                     scalar=await sqlCommand.ExecuteScalarAsync();
@@ -1461,6 +1462,11 @@ namespace SqlSugar
         #endregion
 
         #region  Helper
+        public  virtual async Task<DbCommand> GetCommandAsync(string sql, SugarParameter[] parameters)
+        {
+            await Task.FromResult(0);
+            throw new NotImplementedException();
+        }
         public async Task CloseAsync()
         {
             if (this.Transaction != null)
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlServerProvider.cs b/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlServerProvider.cs
index dfc831053..517318b04 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlServerProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlServerProvider.cs
@@ -7,12 +7,16 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Xml.Linq;
+using System.Threading;
 
 namespace SqlSugar
 {
     public class SqlServerProvider : AdoProvider
     {
-        public SqlServerProvider() { }
+
+        public SqlServerProvider() {
+          this.IsOpenAsync = true;
+        }
         public override IDbConnection Connection
         {
             get
@@ -75,6 +79,23 @@ namespace SqlSugar
             CheckConnection();
             return sqlCommand;
         }
+        public override async  Task<DbCommand> GetCommandAsync(string sql, SugarParameter[] parameters)
+        {
+            SqlCommand sqlCommand = new SqlCommand(sql, (SqlConnection)this.Connection);
+            sqlCommand.CommandType = this.CommandType;
+            sqlCommand.CommandTimeout = this.CommandTimeOut;
+            if (this.Transaction != null)
+            {
+                sqlCommand.Transaction = (SqlTransaction)this.Transaction;
+            }
+            if (parameters.HasValue())
+            {
+                SqlParameter[] ipars = GetSqlParameter(parameters);
+                sqlCommand.Parameters.AddRange(ipars);
+            }
+            await CheckConnectionAsync();
+            return sqlCommand;
+        } 
         public override void SetCommandToAdapter(IDataAdapter dataAdapter, DbCommand command)
         {
             ((SqlDataAdapter)dataAdapter).SelectCommand = (SqlCommand)command;