下面是我的Windows服务代码。当我调试代码时,我得到错误/异常:

CSMessageUtility的类型初始化式。CSDetails抛出了一个异常。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.IO;
using System.Threading;
using System.Windows;
using System.Windows.Forms;
using CSMessageUtility;

namespace CS_Data_Trasmmiting_Service
{
    public partial class svcCSWinServ : ServiceBase
    {
        //private string sLogFormat;
        //private string sErrorTime;
        private Thread new_thread;
        Logger logObject = new Logger();
        private bool isenable = true;

        public svcCSWinServ()
        {
            InitializeComponent();
            logObject.append("Initialize Service " + DateTime.Now.ToString(), 70);
            CheckForAlarms();
        }

        protected override void OnStart(string[] args)
        {
            try
            {
                new_thread = new Thread(new ThreadStart(CheckForAlarms));
                new_thread.Start();
            }
            catch
            {
            }

            logObject.append("Service Started successfully " + DateTime.Now.ToString(), 70);
        }

        protected override void OnStop()
        {
            try
            {
                isenable = false;
                new_thread.Abort();
            }
            catch
            {

            }
            logObject.append("Service Stopped successfully " + DateTime.Now.ToString(), 70);
        }


        void CheckForAlarms()
        {
            try
            {
                while (true)
                {
                    //if((DateTime.Now.ToString("HH:mm") == "18:00"))
                    //{

                        logObject.append("Start Sending Data " +DateTime.Now.ToString(), 70);
                        try
                        {
                            //SendAllInfo();
                            string str = CSMessageUtility.CSDetails.createDHSMessageFormat();
                            Thread.Sleep(2000);
                            string str1 = CSMessageUtility.CSDetails.createEALMessageFormat();
                            Thread.Sleep(2000);
                            string str2 = CSMessageUtility.CSDetails.createProductStatusMessageForamt();
                            Thread.Sleep(2000);
                            string str3 = CSMessageUtility.CSDetails.createEODMessageFormat();
                            Thread.Sleep(2000);
                            string str4 = CSDetails.createProductReceiptEntryatBOSMessageFormat();
                            Thread.Sleep(2000);
                            string str5 = CSMessageUtility.CSDetails.createProductSaleMessageFormat();
                            Thread.Sleep(2000);
                            string str6 = CSMessageUtility.CSDetails.createTotalizerExceptionMessageFormat();
                            Thread.Sleep(2000);
                            //CSMessageUtility.CSDetails.createDailyCOtransferMessageFormat();
                            //Thread.Sleep(2000);

                        }
                        catch (Exception ee)
                        {
                            logObject.append(ee.Message, 70);
                        }
                        logObject.append("Finished Sending Data " +DateTime.Now.ToString(), 70);
                        Thread.Sleep(3000);
                    //}
                    //Thread.Sleep(20000);
                }
            }
            catch (Exception ex)
            {
                logObject.append("Thread Exception: "+ ex.Message + " "+ DateTime.Now.ToString(), 70);

                try
                {
                    new_thread.Abort();
                }
                catch (Exception ex1)
                {
                    logObject.append("Thread Exception: " +ex1.Message + " " + DateTime.Now.ToString(), 70);
                }

                if (isenable == true)
                {
                    new_thread = new Thread(new ThreadStart(CheckForAlarms));
                    new_thread.Start();
                }
            }
        }
    }
}

当前回答

In my case, I had a helper class that was static. In that class was a method to initialize a SqlCommand dependent on variables. As this was being called in several places I moved it to the helper class and called as needed, so this method was also static. Now I had a global property that was the connection string in Global.asax pointing to the connection string in web.config. Intermittently I would get "The type initializer for 'Helper' threw an exception". If I moved the method from the Helper class to the class where it was being called from all was good. The inner exception complained of the object being null (Helper class). What I did was add Using Helper to Global.asax and even though it was not being used by Global.asax this solved the problem.

其他回答

如果由于任何原因断电或Visual Studio IDE崩溃,它会在你的bin/debug bin/release中导致这个问题…

只需删除内容并重新编译(从我的个人经验来看,当我的脚趾碰到复位按钮!)

如果一个类试图在web中获取一个键的值,就会导致这个问题。Config或app。Config,这里没有。

如。 该类有一个静态变量

private static string ClientID = System.Configuration.ConfigurationSettings.AppSettings["GoogleCalendarApplicationClientID"].ToString();

但是网络。config不包含GoogleCalendarApplicationClientID键

该错误将在任何静态函数调用或任何类实例创建时抛出

当我在Util类中使用静态方法时,我遇到了同样的问题,就像您使用CSMessageUtility.CSDetails一样。

问题是在类的静态初始化过程中(使用静态构造函数),框架也初始化了类中的静态变量(字段)。我有一个静态变量,试图从app.config读取值,app.config缺少相应的设置,从而导致一个未处理的异常。这导致了

"对象引用未设置为对象的实例。"

作为内部异常。

字典键应该是唯一的!

在我的例子中,我正在使用一个字典,我发现其中有两个项目偶然有相同的键。

Dictionary<string, string> myDictionary = new Dictionary<string, string>() {
            {"KEY1", "V1"},
            {"KEY1", "V2" },
            {"KEY3", "V3"},
        };

检查TypeInitializationException的InnerException属性;它可能包含有关潜在问题的信息,以及问题发生的确切位置。