Question

i want grid to be rebound without refreshing page when search button is fired
i’ve used PostBackTrigger but it isn’t worked for me

here is some part of my code.aspx

<telerik:RadScriptManager ID="RadScriptManager1" runat="server" />

<asp:TextBox runat="server" ID="txtSearch"/>
<asp:Button Text="Search" runat="server" ID="btnSearch" OnClick="btnSearch_Click" />

<asp:UpdatePanel runat="server" ID="pnlUpdate">
<ContentTemplate>
  <rad:RadGrid id="RadGrid1" runat="server" EnableAJAX="True">
   <MasterTableView AutoGenerateColumns="False">
    <Columns>
     <rad:GridBoundColumn HeaderText="CustomerID" DataField="CustomerID"
      UniqueName= "CustomerID"></rad:GridBoundColumn>
     <rad:GridBoundColumn HeaderText="ContactName" DataField="ContactName"
      UniqueName= "ContactName"></rad:GridBoundColumn>
    </Columns>
   </MasterTableView>
 </rad:RadGrid>
</ContentTemplate>
    <Triggers>
        <asp:PostBackTrigger ControlID="btnSearch" />
    </Triggers>
</asp:UpdatePanel>

so is there any trick to solve this issue ??
thanks to all

Milan Mendpara

Answer 1

You have not defind any Button ‘Click’ EventHandlers for either the OnClick or OnCommand for the button. Be sure that you are not unconditionally binding your Data in the Page_Load or Page_Init Events, check to see if the page is not handling a postback.

<asp:Button Text="Search" OnClick="btnSearch_Click" runat="server" ID="btnSearch" />

// Change <asp:PostBackTrigger ControlID="btnSearch" />
<asp:AsyncPostBackTrigger ControlID="btnSearch" />

// Code Behind EventHandler
protected void btnSearch_Click(object sender, EventArgs e)
{
    // Retrieve and Bind Search Data to RadGrid1
    // You must Bind or Rebind the Datasource to the RadGrid control using the Bind() or Rebind() methods.
 }


// Check Databind is conditional if required
protected void Page_Load(object sender, EventArgs e)
{
    If (!Page.IsPostBack)
    {
        // Bind Data if required
    }    

}