C＃：“类型为'System.InvalidOperationException'的第一次机会异常” [英] C# : "A first chance exception of type 'System.InvalidOperationException'"

问题描述

在C＃中的类分配，我遇到了一个程序崩溃，没有任何错误（除了在VS2010的调试窗口中写入）。下面是导致崩溃的典型代码：

  public partial class Test：Form 
 {
 public Test （）
 {
 InitializeComponent（）; 
} 
 
 private void Test_Load（object sender，EventArgs e）
 {
 ColumnHeader header; 
 
 header = new ColumnHeader（）; 
 header.Text =＃; 
 header.TextAlign = Horizo​​ntalAlignment.Center; 
 header.Width = 30; 
 listView1.Columns.Add（header）; 
 
 TimerCallback tcb = this.UpdateListView; 
 
 System.Threading.Timer updateTimer = new System.Threading.Timer（tcb，null，0，1000）; 
} 
 
 public void UpdateListView（object obj）
 {
 ListViewItem item; 
 listView1.Items.Clear（）; 
 
 for（int i = 0; i <10; i ++）
 {
 item = new ListViewItem（i.ToString（））; 
 
 listView1.Items.Add（item）; 
} 
 
} 
} 
  

没有错误，程序只是结束就好像我会调用 System.Environment.Exit（0）;

  System.Windows.Forms.dll中发生类型为System.InvalidOperationException的第一次机会异常
程序'[4644] ProgramTest.vshost.exe ：Managed（v4.0.30319）'已退出，代码为0（0x0）。 
程序'[4644] ProgramTest.vshost.exe：Program Trace'已退出，代码为0（0x0）。如果您选中 Thrown        （ Ctrl  +  Alt  +）中的中断中的   E 在Visual Studio中），那么在调试时抛出异常时，执行应该会中断。 
 
 
 
这可能会让您深入了解发生了什么。
 
 
 
  
 
Working on a class assignment in C#, I came across a program crash without any error (except what's written in VS2010's debug window). Here is the typical code causing the crash :
public partial class Test : Form
{
    public Test()
    {
        InitializeComponent();
    }

    private void Test_Load(object sender, EventArgs e)
    {
        ColumnHeader header;

        header = new ColumnHeader();
        header.Text = "#";
        header.TextAlign = HorizontalAlignment.Center;
        header.Width = 30;
        listView1.Columns.Add(header);

        TimerCallback tcb = this.UpdateListView;

        System.Threading.Timer updateTimer = new System.Threading.Timer(tcb, null, 0, 1000);
    }

    public void UpdateListView(object obj)
    {
        ListViewItem item;
        listView1.Items.Clear();

        for (int i = 0; i < 10; i++)
        {
            item = new ListViewItem(i.ToString());

            listView1.Items.Add(item);
        }

    }
}
... what am I missing here?

** EDIT **

There's no error, the program just ends like if I would call System.Environment.Exit(0);
A first chance exception of type 'System.InvalidOperationException' occurred in System.Windows.Forms.dll
The program '[4644] ProgramTest.vshost.exe: Managed (v4.0.30319)' has exited with code 0 (0x0).
The program '[4644] ProgramTest.vshost.exe: Program Trace' has exited with code 0 (0x0).

解决方案
If you check Thrown for Common Language Runtime Exception in the break when an exception window (Ctrl+Alt+E in Visual Studio), then the execution should break while you are debugging when the exception is thrown. 

This will probably give you some insight into what is going on.



                        
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