public class form1 inherits system.windows.forms.form
#region " windows 窗體設(shè)計(jì)器生成的代碼 "
public sub new() mybase.new()
'該調(diào)用是 windows 窗體設(shè)計(jì)器所必需的。 initializecomponent()
'在 initializecomponent() 調(diào)用之后添加任何初始化
end sub
'窗體重寫(xiě) dispose 以清理組件列表。 protected overloads overrides sub dispose(byval disposing as boolean) if disposing then if not (components is nothing) then components.dispose() end if end if mybase.dispose(disposing) end sub
'windows 窗體設(shè)計(jì)器所必需的 private components as system.componentmodel.icontainer
'注意: 以下過(guò)程是 windows 窗體設(shè)計(jì)器所必需的 '可以使用 windows 窗體設(shè)計(jì)器修改此過(guò)程。 '不要使用代碼編輯器修改它。 friend withevents textbox1 as system.windows.forms.textbox <system.diagnostics.debuggerstepthrough()> private sub initializecomponent() me.textbox1 = new system.windows.forms.textbox me.suspendlayout() ' 'textbox1 ' me.textbox1.location = new system.drawing.point(112, 96) me.textbox1.name = "textbox1" me.textbox1.tabindex = 0 me.textbox1.text = "" ' 'form1 ' me.autoscalebasesize = new system.drawing.size(6, 14) me.clientsize = new system.drawing.size(292, 266) me.controls.add(me.textbox1) me.name = "form1" me.text = "form1" me.resumelayout(false)
end sub
#end region dim str as string = ""
private sub textbox1_textchanged(byval sender as system.object, byval e as system.eventargs) handles textbox1.textchanged dim num as integer = 0 dim temp as string = "" while num < textbox1.text.length temp += "[0-9]" num += 1 end while
if not (textbox1.text like temp) then textbox1.text = str textbox1.focus() else str = textbox1.text end if end sub end class
