vb 变量C为文本框输入的一个字符，判断该字符是大小写字母、数字还是其他变量，必须用到下面的程序代码

Private Sub Text1_KeyPress(KeyAscii As Integer)
Dim c As String
c = Chr(KeyAscii)
If c >= "A" And c <= "Z" Then
Print "是大写字母"
ElseIf c >= "a" And c <= "z" Then
Print "是小写字母"
ElseIf c >= "0" And c <= "9" Then
Print "是数字"
Else
Print "是其他字符"
End If
End Sub

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