我一直在重构我的一个旧 MSSQL 连接帮助程序库,但出现以下错误:
Error CS7036 There is no argument given that corresponds to the required formal parameter 'errorMsg' of 'ErrorEventArg.ErrorEventArg(string, string)' MSSQLTest C:\Users\Administrator\Desktop\MSSQLTest\MSSQLTest\MSSQLConnection.cs 61
到目前为止,这是我的代码:
MSSQLConnection.cs
using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Threading;
namespace MSSQLTest
{
public class ErrorEventArg : EventArgs
{
public string ErrorMsg { get; set; }
public string LastQuery { get; set; }
public ErrorEventArg(string errorMsg, string lastQuery)
{
ErrorMsg = errorMsg;
LastQuery = lastQuery;
}
}
public class MSSQLConnection
{
/// <summary>
/// Private class objects.
/// </summary>
private SqlConnection sqlConnection;
private int sqlCommandTimeout;
private string lastQuery = string.Empty;
/// <summary>
/// Public event related objects & handler.
/// </summary>
public event ErrorHandler OnError;
public delegate void ErrorHandler(MSSQLConnection sender, ErrorEventArg e);
/// <summary>
/// Class constructor.
/// </summary>
/// <param name="sqlConnection"></param>
/// <param name="sqlCommandTimeout"></param>
public MSSQLConnection(SqlConnection sqlConnection, Int32 sqlCommandTimeout = 120)
{
if (null == sqlConnection)
throw new Exception("Invalid MSSQL Database Conection Handle");
if (sqlConnection.State != System.Data.ConnectionState.Open)
throw new Exception("MSSQL Database Connection Is Not Open");
this.sqlConnection = sqlConnection;
this.sqlCommandTimeout = sqlCommandTimeout;
}
/// <summary>
/// Helper method to emit a database error to event subscribers.
/// </summary>
/// <param name="errorMsg"></param>
internal void EmitError(String errorMsg)
{
var errorDelegate = OnError;
if (errorDelegate != null)
{
errorDelegate(this, new ErrorEventArg() // Line #61
{
ErrorMsg = errorMsg,
LastQuery = lastQuery
});
}
}
/// rest of the code snipped
}
}
这个错误是什么意思,我该如何解决?我以前没见过这个错误...
最佳答案
在
的构造函数中public class ErrorEventArg : EventArgs
您必须按如下方式添加“base”:
public ErrorEventArg(string errorMsg, string lastQuery) : base (string errorMsg, string lastQuery)
{
ErrorMsg = errorMsg;
LastQuery = lastQuery;
}
关于c# - 没有给定的参数对应于所需的形式参数 - .NET 错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/33607188/