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我有一個跟蹤條的這個Scroll事件：爲什麼即時獲取ArgumentOutOfRangeException？
private void trackBar1_Scroll(object sender, EventArgs e)
{
trackbarCounter++;
if (manualDone == true)
{
myTrackPanelss1.trackBar1.Minimum = 0;
myTrackPanelss1.trackBar1.Maximum = _fi.Length - 1; setpicture(myTrackPanelss1.trackBar1.Value);
this.pictureBox1.Refresh();
}
if (automaticDone == true)
{
myTrackPanelss1.trackBar1.Minimum = 0;
myTrackPanelss1.trackBar1.Maximum = fiAutomatic.Length - 1;
long[] tt = list_of_histograms[myTrackPanelss1.trackBar1.Value];
long res = GetTopLumAmount(tt, 1000);
long max = GetHistogramMaximum(tt);
GetHistogramAverage(tt);
setpicture(myTrackPanelss1.trackBar1.Value);
this.pictureBox1.Refresh();
}
}
唯一的例外是在這條線：
long[] tt = list_of_histograms[myTrackPanelss1.trackBar1.Value];
上的TrackBar IM點擊之後，它這一次向右移動在這種情況下，儘可能遠離框架/軌道40，然後在那裏拋出異常。
例外：
指數超出範圍。必須是非負數且小於集合的大小。 參數名稱：索引
現在fiAutomatic變量包含2225個指數法例如在索引[0]我看到：{000001.bmp} 在索引[1]我看到：{000002.bmp} 等。
list_of_histograms是一個包含現在在每個索引中的40個索引我有一個256索引裏面，例如在索引[0]我看到：{[long256]}和我看到索引[0] 256個數字。 然後再次在索引[1]中{[long256]}和另外256個數字等等。
而且跟蹤條值是40
但爲什麼當IM的跟蹤條移動到右側後40幀/圖像及其引發此異常？
這是一個完整的異常消息：
System.ArgumentOutOfRangeException was unhandled
Message=Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
Source=mscorlib
ParamName=index
StackTrace:
at System.ThrowHelper.ThrowArgumentOutOfRangeException()
at System.Collections.Generic.List`1.get_Item(Int32 index)
at Extracting_Frames.Form1.trackBar1_Scroll(Object sender, EventArgs e) in D:\C-Sharp\Extracting_Frames\Extracting_Frames\Extracting_Frames\Form1.cs:line 1793
at System.Windows.Forms.TrackBar.OnScroll(EventArgs e)
at System.Windows.Forms.TrackBar.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.SendMessage(HandleRef hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows.Forms.Control.SendMessage(Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.Control.ReflectMessageInternal(IntPtr hWnd, Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WmHScroll(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.UserControl.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows.Forms.NativeWindow.DefWndProc(Message& m)
at System.Windows.Forms.Control.DefWndProc(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.TrackBar.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at Extracting_Frames.Program.Main() in D:\C-Sharp\Extracting_Frames\Extracting_Frames\Extracting_Frames\Program.cs:line 18
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.Runtime.Hosting.ManifestRunner.Run(Boolean checkAptModel)
at System.Runtime.Hosting.ManifestRunner.ExecuteAsAssembly()
at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[] activationCustomData)
at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext)
at System.Activator.CreateInstance(ActivationContext activationContext)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:
因爲在40個元素的數組索引是0到39。40不存在。你已經提到你已經查看了索引0，所以*你必須已經知道這個*。 – Jon