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我正在使用 Bunifu UI 框架，一切都很好，直到我从 Bunifu UI 添加了一个“退出”按钮，即 bunifuFlatButton，我尝试了 this.Close(); 和关闭（）；并且我都得到 System.NullReferenceException 是未处理的错误。

按钮：

在此处输入图像描述

错误：

在此处输入图像描述

System.NullReferenceException was unhandled
  HResult=-2147467261
  Message=Object reference not set to an instance of an object.
  Source=Bunifu_UI_v1.5.3
  StackTrace:
       at Bunifu.Framework.UI.BunifuFlatButton.method_5()
       at Bunifu.Framework.UI.BunifuFlatButton.BunifuFlatButton_MouseClick(Object sender, MouseEventArgs e)
       at System.Windows.Forms.Control.OnMouseClick(MouseEventArgs e)
       at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
       at System.Windows.Forms.Control.WndProc(Message& m)
       at System.Windows.Forms.Label.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 Project.Program.Main() in C:\Project\Project\Program.cs:line 19
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException:

谢谢

4

2 回答 2

6

我认为这是因为 bunifu 按钮有一些方法，例如“悬停时更改颜色，鼠标单击时更改颜色等”，
当您单击按钮时，表单会关闭，但随后可能应用程序会尝试调用该 bunifu 按钮上的方法，例如例如鼠标单击后更改颜色，但窗体关闭，然后发生错误。
我通过在表单关闭之前禁用按钮来解决这个问题：

private void bunifuFlatButton1_Click(object sender, EventArgs e)
{
    bunifuFlatButton1.Enabled = false;
    this.Close();
}
于 2018-05-07T22:38:37.907 回答
3

是的，目前Bunifu Flat Button存在问题。但是，如果您希望仅使用图像设置“退出”按钮，则可以使用（正如我在此类设计用例中一直使用的那样）Bunifu Thin Button甚至更好的Bunifu Image Button 。

于 2018-03-26T06:18:34.573 回答