Occurs when one of the pager buttons is clicked, but after the GridView control handles the paging operation.
Assembly: System.Web (in System.Web.dll)
Syntax
Public Event PageIndexChanged As [%$TOPIC/a27cy780_en-us_VS_110_2_0_0_0_0%]public event [%$TOPIC/a27cy780_en-us_VS_110_2_0_1_0_0%] PageIndexChangedpublic:
event [%$TOPIC/a27cy780_en-us_VS_110_2_0_2_0_0%]^ PageIndexChanged {
void add ([%$TOPIC/a27cy780_en-us_VS_110_2_0_2_0_1%]^ value);
void remove ([%$TOPIC/a27cy780_en-us_VS_110_2_0_2_0_2%]^ value);
}member PageIndexChanged : IEvent<[%$TOPIC/a27cy780_en-us_VS_110_2_0_3_0_0%],
[%$TOPIC/a27cy780_en-us_VS_110_2_0_3_0_1%]><asp:[%$TOPIC/a27cy780_en-us_VS_110_2_0_4_0_0%] OnPageIndexChanged="[%$TOPIC/a27cy780_en-us_VS_110_2_0_4_0_1%]" />
Remarks
The PageIndexChanged event is raised when one of the pager buttons is clicked, but after the GridView control handles the paging operation. This enables you to provide an event-handling method that performs a custom routine, such as a custom paging operation, whenever this event occurs.
To determine the index of the page selected by the user, use the PageIndex property of the GridView control.
For more information about handling events, see Consuming Events.
Examples
The following example demonstrates how to use the PageIndexChanged event to display the page number selected by the user from the pager row.
<%@ Page language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Sub CustomersGridView_DataBound(ByVal sender As Object, ByVal e As EventArgs)
If Not IsPostBack Then
' Call a helper method to display the current page number
' when the page is first loaded.
DisplayCurrentPage()
End If
End Sub
Sub CustomersGridView_PageIndexChanged(ByVal sender As Object, ByVal e As EventArgs)
' Call a helper method to display the current page number
' when the user navigates to a different page.
DisplayCurrentPage()
End Sub
Sub DisplayCurrentPage()
' Calculate the current page number.
Dim currentPage As Integer = CustomersGridView.PageIndex + 1
' Display the current page number.
Message.Text = "Page " & currentPage.ToString() & " of " & _
CustomersGridView.PageCount.ToString() & "."
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>GridView PageIndexChanged Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>GridView PageIndexChanged Example</h3>
<asp:label id="Message"
forecolor="Red"
runat="server"/>
<br/>
<asp:gridview id="CustomersGridView"
datasourceid="CustomersSource"
autogeneratecolumns="true"
emptydatatext="No data available."
allowpaging="true"
ondatabound="CustomersGridView_DataBound"
onpageindexchanged="CustomersGridView_PageIndexChanged"
runat="server">
<pagersettings mode="Numeric"
position="Bottom"
pagebuttoncount="10"/>
<pagerstyle backcolor="LightBlue"/>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. Use an ASP.NET -->
<!-- expression to retrieve the connection string value -->
<!-- from the Web.config file. -->
<asp:sqldatasource id="CustomersSource"
selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</form>
</body>
</html>
<%@ Page language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
void CustomersGridView_DataBound(Object sender, EventArgs e)
{
if (!IsPostBack)
{
// Call a helper method to display the current page number
// when the page is first loaded.
DisplayCurrentPage();
}
}
void CustomersGridView_PageIndexChanged(Object sender, EventArgs e)
{
// Call a helper method to display the current page number
// when the user navigates to a different page.
DisplayCurrentPage();
}
void DisplayCurrentPage()
{
// Calculate the current page number.
int currentPage = CustomersGridView.PageIndex + 1;
// Display the current page number.
Message.Text = "Page " + currentPage.ToString() + " of " +
CustomersGridView.PageCount.ToString() + ".";
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>GridView PageIndexChanged Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>GridView PageIndexChanged Example</h3>
<asp:label id="Message"
forecolor="Red"
runat="server"/>
<br/>
<asp:gridview id="CustomersGridView"
datasourceid="CustomersSource"
autogeneratecolumns="true"
emptydatatext="No data available."
allowpaging="true"
ondatabound="CustomersGridView_DataBound"
onpageindexchanged="CustomersGridView_PageIndexChanged"
runat="server">
<pagersettings mode="Numeric"
position="Bottom"
pagebuttoncount="10"/>
<pagerstyle backcolor="LightBlue"/>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Northwind sample database. Use an ASP.NET -->
<!-- expression to retrieve the connection string value -->
<!-- from the Web.config file. -->
<asp:sqldatasource id="CustomersSource"
selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</form>
</body>
</html>
Platforms
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
