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How to Add Additional Element to GridView Pager without PagerTemplate

PagerTemplate allows to create any configuration of pager but it also requires custom paging to be implemented. Sometimes built-in paging completely meet all needs but a little modification is reduired, for example, ability to change page size. That can be done within RowCreated event handler.

<asp:GridView ID="GridView1" runat=server AllowPaging="True" OnRowCreated="GridView1_RowCreated" ...
Code behind:
protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
if (e.Row.RowType == DataControlRowType.Pager)
DropDownList ddl = new DropDownList();
//adds variants of pager size
ddl.AutoPostBack = true;
//selects item due to the GridView current page size
ListItem li = ddl.Items.FindByText(GridView1.PageSize.ToString());
if (li != null)
ddl.SelectedIndex = ddl.Items.IndexOf(li);
ddl.SelectedIndexChanged += new EventHandler(ddl_SelectedIndexChanged);
//adds dropdownlist in the additional cell to the pager table
Table pagerTable = e.Row.Cells[0].Controls[0] as Table;
TableCell cell = new TableCell();
cell.Style["padding-left"] = "15px";
cell.Controls.Add(new LiteralControl("Page Size:"));
void ddl_SelectedIndexChanged(object sender, EventArgs e)
//changes page size
GridView1.PageSize = int.Parse(((DropDownList)sender).SelectedValue);
//binds data source
GridView1.DataSource = ...;
Source code - 1.9 kB