how to use Keypress Event in asp.net

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ASP.NET

how to add two textbox value on textbox keypress event in web application?

Posted 1-Nov-12 2:29am

Surendra0x2

Updated 1-Nov-12 3:49am

fjdiewornncalwe

v3

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Comments

a1mimo 1-Nov-12 8:31am

A further explanation would be good if you looking for an answer

3 solutions

Solution 1

C#

protected void textbox1_KeyPress(Object sender,KeyPressEventArgs e)
{
   if(e.KeyChar==(char)Keys.Tab)
   {
      Keybox4.Focus();
   }

}

Addionally MultiLine property set to true, and AcceptsTab also set to true.

Posted 1-Nov-12 2:36am

sarathtamil

Updated 1-Nov-12 3:52am

v2

Comments

Sanjay K. Gupta 1-Nov-12 8:43am

The solution may asked for ASP.NET. Your code shows C#.NET window application.

fjdiewornncalwe 1-Nov-12 9:52am

Can ASP.NET not get written with C# in the back end? Your downvote on this answer is simply wrong as the answer is correct. The OP has not specified his code behind language.

Sanjay K. Gupta 1-Nov-12 9:55am

He has specified the Tag.

fjdiewornncalwe 1-Nov-12 9:59am

No, he has not. He has specified ASP.NET, not the language of code behind.

Sanjay K. Gupta 1-Nov-12 10:00am

It is enough.

Sanjay K. Gupta 1-Nov-12 10:08am

KeyPressEventArgs object of win application. OP has question as "how to add two textbox value on textbox keypress event in web application?". You are more senior than me. I am not arguing with you. Dont dont downvote me.

Sanjay K. Gupta 1-Nov-12 10:13am

You have eaten my whole day rep points.No Problem.
Have a nice evening. GB.

Solution 3

C#

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
    if (!char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar) &&
        (e.KeyChar != '.'))
    {
            e.Handled = true;
    }

    // only allow one decimal point
    if ((e.KeyChar == '.') && ((sender as TextBox).Text.IndexOf('.') > -1))
    {
        e.Handled = true;
    }
}

Posted 13-Apr-15 18:19pm

Member 11295484

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Vipul J Patel · Accepted Answer · 2012-11-01T03:37:00

To resolve your problem follow below step.

step 1: Create java script function

function txtOnkeypress()
{
// apply your logic here..
}

For example:

XML

<script type="text/javascript">
        function txtOnKeyPress(txt1)
         {
            if (txt1 != 'undefined') 
            {
                 txt2 = document.getElementById('<%=TextBox2.ClientId               %>');
                 txt2.value = txt1.value;

            }
         }
    </script>

step 2: call javascript function on textbox key press event.

onkeyPress = txtOnkeypress()

For example:

XML

<asp:TextBox ID="texbox1" runat="server" onkeydown="txtOnKeyPress(this);" ></asp:TextBox>
    <asp:TextBox ID="TextBox2" runat="server" ></asp:TextBox>

Thanks
Vipul patel