VB.NET中没有DOEVENTS语句可有什么可代替?

例如我想看一段弧的画画过程
Dim mypen As Pen
        mypen = New Pen(System.Drawing.Color.Red)
        Dim mydraw As System.Drawing.Graphics
        mydraw = PictureBox1.CreateGraphics()
          '画孤
        Dim i As Integer
        Dim k As Integer
        For i = 300 To 0 Step -5
            If i = 0 Then
                MsgBox("hello")
                Exit For
            End If
            k = 1
            mydraw.DrawArc(mypen, CSng(105 - 1.414 * i), CSng(105 - 1.414 *
i), i, i, 0, 360)
            Do While (k < 90000000)
                k = k + 1
            Loop

        Next

发现等了一会儿就画出来了

7 个解决方案

#1

Microsoft Visual FoxPro Language Reference

DOEVENTS CommandSee Also
AutoYield Property | Events
Executes all pending Windows events.

DOEVENTS
Remarks
Window events are placed in a queue when the AutoYield property is set to false (.F.) and program code is executing. DOEVENTS executes all pending Windows events and processes any user code associated with the Windows events.

See Also
AutoYield Property | Events

有呀

#2

Visual FoxPro ?????我是说VB.NET

#3

怎么没有？
ms-help://MS.VSCC/MS.MSDNVS.2052/cpref/html/frlrfSystemWindowsFormsApplicationClassDoEventsTopic.htm

#4

Doevents方法放在了Application类中：
Application.Doevents

#5

可以改变，但你必须写实现模块时间里的方法名，如：
实现模块事件
          Module module1
             public Event Onevent(byval name as string)
             sub DoEvent()‘这就是DoEvent，可以换成别的名称
               RaiseEvent Onevent("Module1")
             end sub
           End Module
-------------------------------------------------
实现模块事件处理事件
          public Class Form1
                inherits system.windows.forms.form
                  [......]
           private sub OnEvent(byval Name as string)
              Msgbox(Name)
           End Sub
           private sub button1_click(byval sender as system.object, _
             byval e as system.EventArgs) Handles Button1.click
               AddHandle Module1.OnEvent,Addressof OnEvent
                    Module1.DoEvent()
             End Sub
                 [.......]
          End Class

#6

郁闷，楼上的不要乱说啊！

VB6 VB.NET
DoEvents Application.DoEvents()

#7

Application.DoEvents()

#1

#2