How to check if enterkey is pressed in a TextBox in asp.net

Question

I have a asp.net Text Box which accepts date in the format MM/DD/YYYY. After entering the date i will hit enter key.if enter key i need to execute server side code.How can w

Answer 1

Use the keydown event:

textBox.Attributes.Add("onKeyDown", "KeyDownHandler()");

Have KeyDownHandler() check the pressed key and if correct, submit the surrounding form or invoke an AJAX request. See keyboard codes at Javascript Char Codes.

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Alternatively, textbox ID can be injected into jQuery from .aspx and assigned a direct keydown handler:

$('#<%=textBox.clientID%>').keydown(function (e) { /* Do server request; */ });

Answer 2

you set jquery tag

so using jquery u can try something like this

$("#field").keydown(function(e){
     if(e.keyCode === 13)
     {
          // enter event
     }
});

Answer 3

You can use the Panel.DefaultButton property to automatically click a button when the user presses Enter.

For example:

<asp:Panel Id="panel1" runat="server" DefaultButton="btnSubmit">
  <asp:TextBox Id="txtDate" runat="server" />
  <asp:Button Id="btnSubmit" Text="Submit" OnClick="btnSubmit_Click" runat="server" />
</asp:Panel>

If you don't want to show the button, you can set its style="display: none".

Answer 4

You can call this Javascript function to check whether enter key has been pressed or not.

function checkEnterKeyPress(e)
{
     var key;     
     if(window.event)
          key = window.event.keyCode; //IE
     else
          key = e.which; //firefox     

     if (key == 13){
         alert(key);
     }
}