VB.NET中讓Textbox只能輸入數字
2024-07-10 13:01:08
供稿：網友
public class form1
inherits system.windows.forms.form
#region " windows 窗體設計器生成的代碼 "
public sub new()
mybase.new()
'該調用是 windows 窗體設計器所必需的。
initializecomponent()
'在 initializecomponent() 調用之后添加任何初始化
end sub
'窗體重寫 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 窗體設計器所必需的
private components as system.componentmodel.icontainer
'注意: 以下過程是 windows 窗體設計器所必需的
'可以使用 windows 窗體設計器修改此過程。
'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_keyup(byval sender as object, byval e as system.windows.forms.keyeventargs) handles textbox1.keyup
if (e.keyvalue > 47 and e.keyvalue < 58) or (e.keyvalue > 95 and e.keyvalue < 106) or (e.keyvalue = 8) or (e.keyvalue = 45) or (e.keyvalue = 46) then
str = textbox1.text
else
textbox1.text = str
textbox1.focus()
end if
end sub
end class
