Rad grid Dispalying page not reset when data source change

[Wella]

I have created asp webpage with rad grid . i have used Telerik.Web.UI.dll  version 2008.01.0415.35 .
In here i change data source according to drop down list change.
Issue is when i change display page and change data source rad grid still showing lastly i selected displaying page.

I have attached image
In here data source consists with 10 records. when i change display page by clicking go button on rad grid it will show first page with records.
In here i need to set fist page when data source change in rad grid

[Shinu]

Hi.

Please take a look into the following code snippet I tried.

ASPX:

<asp:DropDownList ID="ddl" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddl_SelectedIndexChanged">
    <asp:ListItem Text="SqlDataSource1"></asp:ListItem>
    <asp:ListItem Text="SqlDataSource2"></asp:ListItem>
    <asp:ListItem Text="SqlDataSource3"></asp:ListItem>
</asp:DropDownList>
<telerik:RadGrid ID="RadGrid1" runat="server"  AllowPaging="true" PageSize="2">
    <MasterTableView>
    </MasterTableView>
</telerik:RadGrid>

C#:

protected void ddl_SelectedIndexChanged(object sender, EventArgs e)
{
    datasource = ddl.SelectedItem.Text;
    RadGrid1.DataSourceID = datasource;
    RadGrid1.Rebind();
}

Please provide your code if it doesn't help.

Thanks,
Shinu.

[Wella]

Thank yo shinu your reply,

Please find the attached image . Issue is displaying page.

when i bind a large dataset into a rad grid it dispaly "Displaying page 1 of 4717, items 1 to 10 of 47167". then i chage the selected page index to the last page. later i rebind a dataset which is not as large as the previous dataset. than the page index remain unchange. therefore no records are displaying in the grid. message remain as " Displaying page 4717 of 1, items 47167 to 0 of 0".

[Eyup]

Hello Wella,

Can you please verify that you are not using DataBind() ? Please note that performing complex grid operations such as Inserting, Deleting, Updating, Hierarchy relations, Grouping, Paging, Sorting, Filtering, etc. require accommodating appropriate database operations.  Therefore, we suggest you to avoid Simple Databinding and strongly recommend the use of more advanced databinding methods, which automatically handle the aforementioned functions:
Declarative DataSource
Advanced Data Binding

Hope this helps.

Regards,
Eyup
Telerik