Paging Code Behind

protected void gvColumnList_PageIndexChanging(object sender, GridViewPageEventArgs e)

    {        

        gvColumnList.PageIndex = e.NewPageIndex;

        gvColumnList.DataSource = ViewState["vsGridView"];

        gvColumnList.DataBind();                        

    }

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Paging

http://www.geocities.com/Jeff_Louie/net_paging.htm

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

1) If we change DataGrid to a GridView so inside any Event we change
DataGridPageChangedEventArgs to GridViewPageEventArgs.

2) 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.

Paging concepts in GridView

The DataGrid control requires additional coding for paging. The GridView control automatically supports paging by setting the PagerSettings property. The PagerSettings property supports four modes: Numeric ( default ), NextPrevious, NumericFirstLast, and NextPreviousFirstLast.

The Numeric mode displays numbered page links instead of "next/prev" links, and the NumericFirstLast option adds first and last page links. The GridView control's PagerStyle property can be used to set styles and the position of the pager.
Additionally, you can customize the pager buttons for the GridView control using a PagerTemplate.

Custom paging support in the GridView is supplied by the bound data source control as opposed to the AllowCustomPaging mechanism supplied by the DataGrid control.