我需要帮助。我正在使用一个数组列表,突然出现了这个错误。
'System.InvalidOperationException'类型的未处理异常发生在mscorlib.dll中
其他信息:集合已修改;枚举操作无法执行。
以下是显示异常的代码...
foreach (PC_list x in onlinelist) {
if ((nowtime.Subtract(x.time)).TotalSeconds > 5) {
Invoke(new MethodInvoker(delegate {
index = Main_ListBox.FindString(x.PcName);
if(index != ListBox.NoMatches)
Main_ListBox.Items.RemoveAt(index);
}));
onlinelist.Remove(x);
//Thread.Sleep(500);
}
}
在哪里
public class PC_list {
public string PcName;
public string ip;
public string status;
public string NickName;
public DateTime time;
}
注:
- onlinelist是一个ArrayList。
- nowtime和x.time是DateTime类型。
调用堆栈
mscorlib.dll!System.Collections.ArrayList.ArrayListEnumeratorSimple.MoveNext() + 0x122 bytes
BlueBall.exe!BlueBall.BlueBall.clean_arraylist() Line 74 + 0x1a8 bytes C#
BlueBall.exe!BlueBall.BlueBall.server() Line 61 + 0x8 bytes C#
mscorlib.dll!System.Threading.ThreadHelper.ThreadStart_Context(object state) + 0x63 bytes
mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool ignoreSyncCtx) + 0xb0 bytes
mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state) + 0x2c bytes
mscorlib.dll!System.Threading.ThreadHelper.ThreadStart() + 0x44 bytes
[Native to Managed Transition]