How to Allow only Alphabets and / on text box?

Question

1.30/5 (3 votes)

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I have to Enter in to an Sector text, it has to come like this /AAA/AAA/AAA/AAA/AAA/,ITS ALREADY THE TEXT HAS SET AS WHEN WE HAD ENTERED IN TO THAT TEXT IT WILL SHOWS LIKE THIS __/__/__/__/__

PLS HELP ME SIR?

Posted 31-Jan-12 19:04pm

sunil from madras

Updated 20-Apr-23 19:59pm

v3

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Comments

Rajeev Jayaram 1-Feb-12 1:44am

What do you mean? You don't want '/' as the input?

4 solutions

Solution 1

use MaskedTextBox

http://msdn.microsoft.com/en-us/library/system.windows.forms.maskedtextbox.mask.aspx[^]

Posted 31-Jan-12 19:15pm

CRDave1988

Solution 4

C#

<pre>Regex rx = new Regex(@"^[a-zA-Z]+$");

if(!rx.IsMatch(TextBox1.Text)){

//code for handling error

}

Also, refer to this article for an understanding about regular expressions.

"http://www.codeproject.com/KB/cs/Regular_Expressions.aspx"

Posted 31-Jan-12 20:45pm

chetan virkar

Updated 31-Jan-12 20:48pm

v4

Solution 3

Here is an excellent CP article for your reference,
Enhanced Textbox Control[^]

Some links that would help,
http://forums.asp.net/t/1272776.aspx/1[^]
SOF[^]

Posted 31-Jan-12 19:42pm

Rajeev Jayaram

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Abhinav S · Accepted Answer · 2012-01-31T19:15:00

Solution 2

Add a KeyPress event handler on the TextBox.
Then put in this code into the textbox. This will allow only alphabets or /.

C#

private void textBox_KeyPress(object sender, KeyPressEventArgs e)
{
    if (!Regex.IsMatch(textbox.Text, @"[a-zA-Z/]"))
    {
        e.Handled = true;
    }
}

Posted 31-Jan-12 19:15pm

Abhinav S