I don't want to TextBox input some text?

[isawa]

I want to TextBox input only 0-9. How can? show me some code.

 

[Craig]

In the textbox keypress declaration:

        If Char.IsControl(e.KeyChar) = False And _
        Char.IsDigit(e.KeyChar) = False Then
            e.Handled = True
        End If

However this wont accept decimal points.

Hope this is of some help

 

[kulrom]

You can also find the ascii codes for the values that you want to allow to be entered and make it like in the code below

[SIZE=2][COLOR=#0000ff]Private [/COLOR][/SIZE][SIZE=2][COLOR=#0000ff]Sub[/COLOR][/SIZE][SIZE=2] TextBox1_KeyPress([/SIZE][SIZE=2][COLOR=#0000ff]ByVal[/COLOR][/SIZE][SIZE=2] sender [/SIZE][SIZE=2][COLOR=#0000ff]As[/COLOR][/SIZE][SIZE=2][COLOR=#0000ff]Object[/COLOR][/SIZE][SIZE=2], [/SIZE][SIZE=2][COLOR=#0000ff]ByVal[/COLOR][/SIZE][SIZE=2] e [/SIZE][SIZE=2][COLOR=#0000ff]As[/COLOR][/SIZE][SIZE=2] System.Windows.Forms.KeyPressEventArgs) [/SIZE][SIZE=2][COLOR=#0000ff]Handles[/COLOR][/SIZE][SIZE=2] TextBox1.KeyPress
[/SIZE][SIZE=2][COLOR=#0000ff]   If[/COLOR][/SIZE][SIZE=2] e.KeyChar <= Chr(47) [/SIZE][SIZE=2][COLOR=#0000ff]Or[/COLOR][/SIZE][SIZE=2] e.KeyChar >= Chr(58) [/SIZE][SIZE=2][COLOR=#0000ff]Then [COLOR=darkgreen]'only 0-9[/COLOR]
[/COLOR][/SIZE][SIZE=2]         e.Handled = [/SIZE][SIZE=2][COLOR=#0000ff]True
[/COLOR][/SIZE][SIZE=2][COLOR=#0000ff]   End [/COLOR][/SIZE][SIZE=2][COLOR=#0000ff]If
[/COLOR][/SIZE][SIZE=2][COLOR=#0000ff]End [/COLOR][/SIZE][SIZE=2][COLOR=#0000ff]Sub[/COLOR][/SIZE]

HTH
Regards

 

[isawa]

Thanks, everyone but i used that code just ok. so, i want to know more help about Regex.IsMatch how can find that?

code:
Private Function IsValidNum(ByVal strIn As String) As Boolean
Return Regex.IsMatch(strIn, "^-?\d+(\.\d{2})?$")
End Function

 

[kulrom]

Your original thread was not about regular expression but rather about how to preserve other keys except 0-9 and i suppose you should start a new thread as your second question differs from the 1st one

Regards

 

[JuggaloBrotha]

I want to TextBox input only 0-9. How can? show me some code.

just use the NumericUpDown control (it's in your toolbox already)