VB的一些项目中常用的通用方法-一般用于验证类

1.VB的一些项目中常用的通用方法：

'  设置校验键盘输入值,数字
Public Function kyd(key As Integer) As Integer
'
Dim mychar
  mychar = "0123456789-" & Chr() & Chr()

 If InStr(mychar, Chr(key)) =  Then
        kyd =
       ' MsgBox "只能输入数字"
        Exit Function
  Else
        kyd = key
 End If

End Function

' 设置校验键盘输入值,数字
Public Function knum(key As Integer) As Integer
'
Dim mychar
  mychar = "0123456789." & Chr() & Chr()

 If InStr(mychar, Chr(key)) =  Then
       knum = 

      ' MsgBox "只能输入数字"

       Exit Function
  Else
       knum = key
 End If

End Function

' 设置校验键盘输入值,数字
Public Function krq(key As Integer) As Integer
'
Dim mychar
  mychar = "" & Chr() & Chr()

 If InStr(mychar, Chr(key)) =  Then
       krq = 

      ' MsgBox "只能输入数字"

       Exit Function
  Else
       krq = key
 End If

End Function

' 设置校验键盘输入值,数字和字母可以
Public Function knumCHAR(key As Integer) As Integer
'
Dim mychar
  mychar = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" & Chr() & Chr()

 If InStr(mychar, Chr(key)) =  Then
       key = 

      ' MsgBox "只能输入数字"

       Exit Function
  Else
      ' key = key
 End If

End Function