GridView fired event wasn't handled

Abhishek Chauhan

9y3.4k.NET

Basically , the table that i am going to fetch has around 60 rows and i want to display in gridview by giving allowpaging & allowsorting property as 'true and also pagesize as '4'. It didn't give any complie time or runtime error but as soon when i click on the attribute for sorting or paging , it will throw an error. So, how can i overcome this exception...!!!!

Error:

The GridView 'grdview' fired event PageIndexChanging which wasn't handled.

The GridView 'grdview' fired event Sorting which wasn't handled.

2 Replies

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Midhun Tp9y ago
Hi,

You need to handle Page index changing of Gridview -

AllowSorting="true" runat="server" OnPageIndexChanging="GridView1_PageIndexChanging">

In code behind -

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
grdview.PageIndex = e.NewPageIndex;
//Bind grid
}

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Chetan Ranpariya9y ago
Hi Abhishek,

Only binding grid to the data source will not work. It will bind the data only once. When you click on the page number you should handle that event by writing a proper event handler for page index changed and also for sorting.

In the event handler you need to determine the page number and get that page data from the database, set the page index of the grid and bind the grid again.

You can get the more information about pageindexchanging events at
https://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.gridview.pageindexchanging(v=vs.110).aspx

Example of Sorting Event can be found at
https://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.gridview.sorting(v=vs.110).aspx

Thanks and regards,
Chetan Ranpariya
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