C#:"'System.InvalidOperationException'类型&QUOT的第一个机会异常; [英] C# : "A first chance exception of type 'System.InvalidOperationException'"
问题描述
在C#类的分配工作,我碰到一个程序崩溃来没有任何错误(除非什么用VS2010编写的调试窗口)。这里是典型的code导致飞机失事的原因:
公共部分类测试:表
{
公开测试()
{
的InitializeComponent();
} 私人无效Test_Load(对象发件人,EventArgs的发送)
{
的columnHeader头; 标题=新的columnHeader();
header.Text =#;
header.TextAlign = HorizontalAlignment.Center;
header.Width = 30;
listView1.Columns.Add(头); TimerCallback TCB = this.UpdateListView; System.Threading.Timer updateTimer =新System.Threading.Timer(TCB,NULL,0,1000);
} 公共无效UpdateListView(obj对象)
{
ListViewItem的项目;
listView1.Items.Clear(); 的for(int i = 0;我小于10;我++)
{
项目=新的ListViewItem(i.ToString()); listView1.Items.Add(项目);
} }
}
...我是什么在这里失踪?
** 修改 **
有没有错误,程序只是结束的一样,如果我称之为 System.Environment.Exit(0);
'System.InvalidOperationException'类型的第一次机会异常出现在System.Windows.Forms.dll中
该方案的[4644] ProgramTest.vshost.exe:托管(v4.0.30319)已退出与code 0(为0x0)。
该方案的[4644] ProgramTest.vshost.exe:程序跟踪已退出与code 0(为0x0)。
如果您检查时抛出
为通用语言运行时异常
在休息的时候异常窗口(<大骨节病>控制骨节病> + <大骨节病>替代骨节病> + <大骨节病>电子骨节病>在Visual Studio),则执行应该在正在调试打破当抛出异常。
这将可能给你一些洞察到正在发生的事情。
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).
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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