integer datatype Textbox Validation

Posted by Rohithrs under Silverlight on 8/5/2011 | Points: 10 | Views : 3558 | Status : [Member] | Replies : 1

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Hi,
i am new to Silverlight, i created Silverlight application(MVVM pattern) contains Textbox and button.
the textbox datatype is int, so user should not enter any character in textbox, for this i neetd to do validation.

Can any one help me out on this(in detail).

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Posted by: Vuyiswamb on: 10/11/2011 [Member] [MVP] [Administrator] NotApplicable | Points: 25

0	This should do the Trick private void Textbox1_KeyDown(object sender, KeyEventArgs e) { if (e.Key == Key.Tab) { return; } var thisKeyStr = ""; if (e.PlatformKeyCode == 190 \|\| e.PlatformKeyCode == 110) { thisKeyStr = "."; } else { thisKeyStr = e.Key.ToString().Replace("D", "").Replace("NumPad", ""); } var s = (sender as TextBox).Text + thisKeyStr; var rStr = "^[0-9]+[.]?[0-9]$"; var r = new Regex(rStr, RegexOptions.IgnoreCase); e.Handled = !r.IsMatch(s); } Thank you for posting at Dotnetfunda [Administrator] Rohithrs, if this helps please login to Mark As Answer*. \| Alert Moderator

This should do the Trick

 private void Textbox1_KeyDown(object sender, KeyEventArgs e)

        {

            if (e.Key == Key.Tab)

            {

                return; 

            }

            var thisKeyStr = "";

            if (e.PlatformKeyCode == 190 || e.PlatformKeyCode == 110)

            {

                thisKeyStr = ".";

            }

            else

            {

                thisKeyStr = e.Key.ToString().Replace("D", "").Replace("NumPad", "");

            }

            var s = (sender as TextBox).Text + thisKeyStr;

            var rStr = "^[0-9]+[.]?[0-9]*$";

            var r = new Regex(rStr, RegexOptions.IgnoreCase);

            e.Handled = !r.IsMatch(s);

        }

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