call code behind functions or methods from javascript

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How to call code behind functions or methods of asp.net from javascript? From javascript i need reload my datagrid by calling this function "fillgrid()" which i have written in my code behind.

Posted 27-Jun-13 22:02pm

mohanlal_88

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Sarrrva · Answer 1 · 2013-06-30T23:45:00

Hi,
you need something like this, that trick is

For example:

1. Add this html code

XML

<asp:TextBox ID="txtinput" runat="server" onblur="doPostBack();"></asp:TextBox>
<asp:UpdatePanel ID="niceTrick" runat="server">
<ContentTemplate>
<asp:Button ID="btnpostback" runat="server" Text="btnpostback" onclick="btnpostback_Click" style="display:none" />
<asp:label id="lbltxtchange" runat="server" xmlns:asp="#unknown"></asp:label>
</ContentTemplate>
</asp:UpdatePanel>

2 . Add this javascript code

C#

 <script type="text/javascript">
<pre lang="xml">function doPostBack() {
    document.getElementById('<%=btnpostback.ClientID  %>').click();
}

</script>

3. Finally add this code into your code behind file

C#

protected void btnpostback_Click(object sender, EventArgs e)
{
  lbltxtchange.Text=txtinput.Text;
}

regards and thanks
sarva

Ali Reza Barkhordari · Answer 2 · 2013-06-27T22:30:00

You can not call a server side function in client side scripts, Two solution is available for you
1. Reload whole of page by

JavaScript

window.location.reload()

or post back the page by a ASP.NET control.

2. Use Ajax technology
My recommend is using the built-in Ajax in ASP.NET.
Put your DataGrid into a UpdatePanel from Ajax extension controls then you can update it asynchronously.
for more info please search your favorite search engine with keyword "ASP.NET Ajax controls"

call code behind functions or methods from javascript

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