DataGrid.ItemCreated Event
.NET Framework (current version)
Occurs on the server when an item in the DataGrid control is created.
Assembly: System.Web (in System.Web.dll)
The ItemCreated event is raised when an item in the DataGrid control is created, both during round-trips and at the time data is bound to the control.
The ItemCreated event is commonly used to control the content and appearance of a row in the DataGrid control.
For more information about handling events, see NIB: Consuming Events.
The following code example demonstrates how to specify and code a handler for the ItemCreated event to display the order that items are created in the DataGrid control.
<%@ Page Language="VB" AutoEventWireup="True" %> <%@ Import Namespace="System.Data" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <script language="VB" runat="server"> Dim Cart As DataTable Dim CartView As DataView Function CreateDataSource() As ICollection Dim dt As New DataTable() Dim dr As DataRow dt.Columns.Add(New DataColumn("IntegerValue", GetType(Int32))) dt.Columns.Add(New DataColumn("StringValue", GetType(String))) dt.Columns.Add(New DataColumn("CurrencyValue", GetType(Double))) Dim i As Integer For i = 0 To 9 dr = dt.NewRow() dr(0) = i dr(1) = "Item " & i.ToString() dr(2) = 1.23 *(i + 1) dt.Rows.Add(dr) Next i Dim dv As New DataView(dt) Return dv End Function 'CreateDataSource Sub Page_Load(sender As Object, e As EventArgs) If Not IsPostBack Then ' Need to load this data only once. ItemsGrid.DataSource = CreateDataSource() ItemsGrid.DataBind() End If End Sub 'Page_Load Sub Item_Created(sender As Object, e As DataGridItemEventArgs) Label1.Text = Label1.Text & " " & e.Item.ItemIndex End Sub 'Item_Created </script> <head runat="server"> <title>DataGrid ItemCreated Example</title> </head> <body> <form id="form1" runat="server"> <h3>DataGrid ItemCreated Example</h3> <asp:DataGrid id="ItemsGrid" runat="server" BorderColor="black" BorderWidth="1" CellPadding="3" ShowFooter="true" OnItemCreated="Item_Created" AutoGenerateColumns="true"> <HeaderStyle BackColor="#00aaaa"> </HeaderStyle> <FooterStyle BackColor="#00aaaa"> </FooterStyle> </asp:DataGrid> <br /> <asp:Label id="Label1" Text="Order of items created: " runat="server"/> <br /> <asp:Label id="Label2" Text="Note: The -1's refer to the header and footer." runat="server"/> </form> </body> </html>
<%@ Page Language="VB" AutoEventWireup="True" %> <%@ Import Namespace="System.Data" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <script runat="server"> Function CreateDataSource() As ICollection ' Create sample data for the DataGrid control. Dim dt As DataTable = New DataTable() Dim dr As DataRow ' Define the columns of the table. dt.Columns.Add(New DataColumn("IntegerValue", GetType(Int32))) dt.Columns.Add(New DataColumn("StringValue", GetType(String))) dt.Columns.Add(New DataColumn("CurrencyValue", GetType(Double))) ' Populate the table with sample values. Dim i As Integer For i=0 To 10 dr = dt.NewRow() dr(0) = i dr(1) = "Item " & i.ToString() dr(2) = 1.23 * (i + 1) dt.Rows.Add(dr) Next i Dim dv As DataView = New DataView(dt) return dv End Function Sub Page_Load(sender As Object, e As EventArgs) ' Load sample data only once, when the page is first loaded. If Not IsPostBack Then ItemsGrid.DataSource = CreateDataSource() ItemsGrid.DataBind() End If End Sub Sub Item_Created(sender As Object, e As DataGridItemEventArgs) ' Customize the footer section with an image. If e.Item.ItemType = ListItemType.Footer Then ' Create an Image control. Dim NewImageControl As System.Web.UI.WebControls.Image = New System.Web.UI.WebControls.Image() ' Set the properties of the Image control. NewImageControl.ImageUrl = "Image1.jpg" NewImageControl.AlternateText = "Image 1" ' Add the Image control to the Controls collection of the ' cell representing the third column in the DataGrid. e.Item.Cells(2).Controls.Add(NewImageControl) End If End Sub </script> <head runat="server"> <title>DataGrid ItemCreated Example</title> </head> <body> <form id="form1" runat="server"> <h3>DataGrid ItemCreated Example</h3> <asp:DataGrid id="ItemsGrid" runat="server" BorderColor="black" BorderWidth="1" CellPadding="3" ShowFooter="true" OnItemCreated="Item_Created"> <HeaderStyle BackColor="#00aaaa"> </HeaderStyle> <FooterStyle BackColor="#00aaaa"> </FooterStyle> </asp:DataGrid> </form> </body> </html>
<%@ Page Language="VB" AutoEventWireup="True" %> <%@ Import Namespace="System.Data" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <script runat="server"> Function CreateDataSource() As ICollection ' Create sample data for the DataGrid control. Dim dt As DataTable = New DataTable() Dim dr As DataRow ' Define the columns of the table. dt.Columns.Add(New DataColumn("IntegerValue", GetType(Int32))) dt.Columns.Add(New DataColumn("StringValue", GetType(String))) dt.Columns.Add(New DataColumn("CurrencyValue", GetType(Double))) ' Populate the table with sample values. Dim i As Integer For i=0 To 10 dr = dt.NewRow() dr(0) = i dr(1) = "Item " & i.ToString() dr(2) = 1.23 * (i + 1) dt.Rows.Add(dr) Next i Dim dv As DataView = New DataView(dt) return dv End Function Sub Page_Load(sender As Object, e As EventArgs) ' Manually register the event-handling method for the ItemCreated ' event of the DataGrid control. AddHandler ItemsGrid.ItemCreated, AddressOf Item_Created ' Load sample data only once, when the page is first loaded. If Not IsPostBack Then ItemsGrid.DataSource = CreateDataSource() ItemsGrid.DataBind() End If End Sub Sub Item_Created(sender As Object, e As DataGridItemEventArgs) ' Customize the footer section with an image. If e.Item.ItemType = ListItemType.Footer Then ' Create an Image control. Dim NewImageControl As System.Web.UI.WebControls.Image = New System.Web.UI.WebControls.Image() ' Set the properties of the Image control. NewImageControl.ImageUrl = "Image1.jpg" NewImageControl.AlternateText = "Image 1" ' Add the Image control to the Controls collection of the ' cell representing the third column in the DataGrid. e.Item.Cells(2).Controls.Add(NewImageControl) End If End Sub </script> <head runat="server"> <title>DataGrid ItemCreated Example</title> </head> <body> <form id="form1" runat="server"> <h3>DataGrid ItemCreated Example</h3> <asp:DataGrid id="ItemsGrid" runat="server" BorderColor="black" BorderWidth="1" CellPadding="3" ShowFooter="true"> <HeaderStyle BackColor="#00aaaa"> </HeaderStyle> <FooterStyle BackColor="#00aaaa"> </FooterStyle> </asp:DataGrid> </form> </body> </html>
.NET Framework
Available since 1.1
Available since 1.1
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