Sorting / Paging on GridView without a DataSourceControl DataSource

Hi,

- If you set AllowPaging="true" or AllowSorting="true" on a GridView control without using a DataSourceControl DataSource (i.e. SqlDataSource, ObjectDataSource), you will run into the following errors:

- When changing the page on the GridView control:

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

- When clicking a column name to sort the column on the GridView control:

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

- As a result of not setting the DataSourceID property of the GridView to a DataSourceControl DataSource, you have to add event handlers for sorting and paging.

<asp:GridView ID="gridView" OnPageIndexChanging="gridView_PageIndexChanging" OnSorting="gridView_Sorting" runat="server" />

protected void gridView_PageIndexChanging(object sender, GridViewPageEventArgs e) { gridView.PageIndex = e.NewPageIndex; gridView.DataBind(); }	protected void gridView_Sorting(object sender, GridViewSortEventArgs e) { DataTable dataTable = gridView.DataSource as DataTable; if (dataTable != null) { DataView dataView = new DataView(dataTable); dataView.Sort = e.SortExpression + " " + ConvertSortDirectionToSql(e.SortDirection); gridView.DataSource = dataView; gridView.DataBind(); } }
private string ConvertSortDirectionToSql(SortDirection sortDirection) { string newSortDirection = String.Empty; switch (sortDirection) { case SortDirection.Ascending: newSortDirection = "ASC"; break; case SortDirection.Descending: newSortDirection = "DESC"; break; } return newSortDirection; }

Better you remember. J

Thanks & Regards,

Arun Manglick || Senior Tech