when autopostback is false RadNumeric textbox Textchange event does not occour

[Kishor]

Hello sir/mam

  I have radnumeric textboxes with autopostback false on a page .
  i want to assign total of two textboxes to third textbox , but the textchange event does not fires.

  it fires when autopostback of textbox is set to true and the page gets refresh each time i type in textbox and it also take some time because pageload gets call

 please help me to solve this problem.
  
  

[Shinu]

Hi,

TextChanged event will fire only when the AutoPostBack property is set to true. So to avoid post-back on TextChanged event, try to do this in client side, you can either use "OnValueChanged" or "OnBlur".

Thanks,
Shinu.

[Kishor]

 

hello

this is my code
it works fine but it takes time for textchange event to occur

I want to assign   txtprice * txtquantity to  txttotal
but due to autopostback is true it takes time and total is assign after 5 to 7 seconds

how can i solve his problem

waiting for reply



<asp:UpdatePanel ID ="up" runat ="server" >
      <ContentTemplate >


         <telerik:RadNumericTextBox ID="txtprice" AutoPostBack ="true"  runat="server"  MaxLength ="10" Width ="120px">
                     <NumberFormat AllowRounding ="false" DecimalDigits = "2" DecimalSeparator ="."
                     GroupSeparator ="," KeepTrailingZerosOnFocus ="true"  />
          </telerik:RadNumericTextBox>


         <telerik:RadNumericTextBox ID="txtquantity" AutoPostBack ="true"  runat="server"  MaxLength ="10" Width ="120px">
                     <NumberFormat AllowRounding ="false" DecimalDigits = "2" DecimalSeparator ="."
                     GroupSeparator ="," KeepTrailingZerosOnFocus ="true"  />
          </telerik:RadNumericTextBox>


           <telerik:RadNumericTextBox ID="txtTotal" AutoPostBack ="true"  runat="server"  MaxLength ="10" Width ="120px">
                     <NumberFormat AllowRounding ="false" DecimalDigits = "2" DecimalSeparator ="."
                     GroupSeparator ="," KeepTrailingZerosOnFocus ="true"  />
             </telerik:RadNumericTextBox>

 </ContentTemplate>

      </asp:UpdatePanel>

    VB CODE


     Protected Sub txtprice_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles  txtprice.TextChanged

          txtTotal.Text = (Convert.ToDouble(txtquantity.Text) * Convert.ToDouble(txtprice.Text))


     End Sub

        
   

[Eyup]

Hi Sawan,

In this case, you do not need to make a postback to the server. You can easily achieve your requirement by implementing a client side approach:

<telerik:RadNumericTextBox ID="txtprice"...>
    <ClientEvents OnValueChanged="valueChanged" />
</telerik:RadNumericTextBox>
<telerik:RadNumericTextBox ID="txtquantity" ...>
    <ClientEvents OnValueChanged="valueChanged" />
</telerik:RadNumericTextBox>

JavaScript:

function valueChanged(sender, args) {
    var price = $find("<%= txtprice.ClientID %>").get_value();
    var quantity = $find("<%= txtquantity.ClientID %>").get_value();

    $find("<%= txtTotal.ClientID %>").set_value(price * quantity);
}

Hope this helps. Please give it a try and let me know if it works for you.

Regards,
Eyup
Telerik

[Kishor]

thanks a lot its working fine