c# – SqlCommand的输入参数

我有sqlCommand的以下参数.如何使其存入和存储存储过程的参数值.

sqlCommand MysqLCommand = new sqlCommand("aspInsertZipCode",MysqLConnection);
 MysqLCommand.CommandType = CommandType.StoredProcedure;
 MysqLCommand.Parameters.Add("@DaTarows",dataStringToProcess.ToString());

解决方法

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

然后在执行命令后读取输出值：

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