没有给出与所需的形式参数相对应的参数-.NET错误

我一直在重构旧的MSSQL Connection帮助程序库之一，但出现以下错误：

严重性代码说明项目文件行错误CS7036没有给出与'ErrorEventArg.ErrorEventArg（string，string）'所需的形式参数'errorMsg'相对应的参数，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
    {
        /// 

        /// Private class objects.
        /// 
        private SqlConnection sqlConnection;
        private int sqlCommandTimeout;
        private string lastQuery = string.Empty;

        /// 

        /// Public event related objects & handler.
        /// 
        public event ErrorHandler OnError;
        public delegate void ErrorHandler(MSSQLConnection sender, ErrorEventArg e);

        /// 

        /// Class constructor.
        /// 
        /// 
        /// 
        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;
        }

        /// 

        /// Helper method to emit a database error to event subscribers.
        /// 
        /// 
        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
    }
}

此错误是什么意思，我该如何解决？我之前没有看过这个错误...

您有一个带有2个参数的构造函数。您应该编写如下内容：

new ErrorEventArg(errorMsv, lastQuery)

它的代码更少，更易于阅读。

编辑

或者，为了工作，可以尝试为ErrorEventArg编写一个没有参数的默认构造函数，如下所示：

public ErrorEventArg() {}