我对SqlCommand的下列参数。我如何使它在国内外享有很高的存储过程的放慢参数值。

 的SqlCommand的MySqlCommand =新的SqlCommand（aspInsertZip code的MySqlConnection）;
 mySqlCommand.CommandType = CommandType.StoredProcedure;
 mySqlCommand.Parameters.Add（@数据行，dataStringToProcess.ToString（））;
 

解决方案

  VAR引出线= mySqlCommand.Parameters.Add（@数据行，dataStringToProcess.ToString（））;
pInOut.Direction = ParameterDirection.InputOutput;
 

然后要你执行的命令后，读取输出值：

  //假定参数是一个字符串，它也可能会被空
字符串值= Convert.IsDBNull（pInOut.Value）？空：（串）pInOut.Value;
 

I have the following parameter for SqlCommand. How do I make it to both in and out the paramter value for the Stored Procedure.

 SqlCommand mySqlCommand = new SqlCommand("aspInsertZipCode", mySqlConnection);
 mySqlCommand.CommandType = CommandType.StoredProcedure;
 mySqlCommand.Parameters.Add("@DataRows", dataStringToProcess.ToString());

var pInOut = mySqlCommand.Parameters.Add("@DataRows", dataStringToProcess.ToString());
pInOut.Direction = ParameterDirection.InputOutput;

And then to read the output value after you've executed the command:

// assumes that the parameter is a string and that it could possibly be null
string value = Convert.IsDBNull(pInOut.Value) ? null : (string)pInOut.Value;