TemplateField.ItemTemplate Property
Definition
Important
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Gets or sets the template for displaying an item in a data-bound control.
public:
virtual property System::Web::UI::ITemplate ^ ItemTemplate { System::Web::UI::ITemplate ^ get(); void set(System::Web::UI::ITemplate ^ value); };[System.ComponentModel.Browsable(false)]
[System.Web.UI.PersistenceMode(System.Web.UI.PersistenceMode.InnerProperty)]
[System.Web.UI.TemplateContainer(typeof(System.Web.UI.IDataItemContainer), System.ComponentModel.BindingDirection.TwoWay)]
public virtual System.Web.UI.ITemplate ItemTemplate { get; set; }[<System.ComponentModel.Browsable(false)>]
[<System.Web.UI.PersistenceMode(System.Web.UI.PersistenceMode.InnerProperty)>]
[<System.Web.UI.TemplateContainer(typeof(System.Web.UI.IDataItemContainer), System.ComponentModel.BindingDirection.TwoWay)>]
member this.ItemTemplate : System.Web.UI.ITemplate with get, setPublic Overridable Property ItemTemplate As ITemplateProperty Value
A ITemplate-implemented object that contains the template for displaying an item in a TemplateField. The default is null, which indicates that this property is not set.
- Attributes
Examples
The following code example demonstrates how to use the ItemTemplate property to create a custom template for the items of a TemplateField field in a GridView control. The template displays the field's value in a RadioButtonList control.
<%@ 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 TitleGridView_RowDataBound (Object sender, GridViewRowEventArgs e)
{
// Get the RadioButtonList control from the row.
RadioButtonList radio = (RadioButtonList)e.Row.FindControl("TypeList");
// Select the appropriate option button based on the value
// of the Type field for the row. In this example, the Type
// field values are stored in the column in the
// GridView control.
if (radio != null)
{
switch (e.Row.Cells[3].Text.Trim())
{
case "business":
radio.SelectedIndex = 0;
break;
case "mod_cook":
radio.SelectedIndex = 1;
break;
case "popular_comp":
radio.SelectedIndex = 2;
break;
case "psychology":
radio.SelectedIndex = 3;
break;
case "trad_cook":
radio.SelectedIndex = 4;
break;
default:
radio.SelectedIndex = 5;
break;
}
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>TemplateField ItemTemplate Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>TemplateField ItemTemplate Example</h3>
<!-- Populate the Columns collection declaratively. -->
<!-- Create a custom TemplateField column that uses -->
<!-- two Label controls to display an author's first and -->
<!-- last name in the same column. -->
<asp:gridview id="TitleGridView"
datasourceid="TitleSqlDataSource"
autogeneratecolumns="false"
onrowdatabound="TitleGridView_RowDataBound"
runat="server">
<columns>
<asp:boundfield datafield="title"
headertext="Title"/>
<asp:boundfield datafield="price"
dataformatstring="{0:c}"
headertext="Price"/>
<asp:templatefield headertext="Type">
<itemtemplate>
<asp:radiobuttonlist id="TypeList"
datasourceid="TypeSqlDataSource"
datatextfield="type"
enabled="false"
runat="server"/>
</itemtemplate>
</asp:templatefield>
<asp:boundfield datafield="type"/>
</columns>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Pubs sample database. -->
<asp:sqldatasource id="TitleSqlDataSource"
selectcommand="SELECT [title], [price], [type] FROM [titles]"
connectionstring="server=localhost;database=pubs;integrated security=SSPI"
runat="server">
</asp:sqldatasource>
<asp:sqldatasource id="TypeSqlDataSource"
selectcommand="SELECT Distinct [type] FROM [titles]"
connectionstring="server=localhost;database=pubs;integrated security=SSPI"
runat="server">
</asp:sqldatasource>
</form>
</body>
</html>
<%@ 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 TitleGridView_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
' Get the RadioButtonList control from the row.
Dim radio As RadioButtonList = CType(e.Row.FindControl("TypeList"), RadioButtonList)
' Select the appropriate option button based on the value
' of the Type field for the row. In this example, the Type
' field values are stored in the column in the
' GridView control.
If Not radio Is Nothing Then
Select Case e.Row.Cells(3).Text.Trim()
Case "business"
radio.SelectedIndex = 0
Case "mod_cook"
radio.SelectedIndex = 1
Case "popular_comp"
radio.SelectedIndex = 2
Case "psychology"
radio.SelectedIndex = 3
Case "trad_cook"
radio.SelectedIndex = 4
Case Else
radio.SelectedIndex = 5
End Select
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>TemplateField ItemTemplate Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>TemplateField ItemTemplate Example</h3>
<!-- Populate the Columns collection declaratively. -->
<!-- Create a custom TemplateField column that uses -->
<!-- two Label controls to display an author's first and -->
<!-- last name in the same column. -->
<asp:gridview id="TitleGridView"
datasourceid="TitleSqlDataSource"
autogeneratecolumns="false"
onrowdatabound="TitleGridView_RowDataBound"
runat="server">
<columns>
<asp:boundfield datafield="title"
headertext="Title"/>
<asp:boundfield datafield="price"
dataformatstring="{0:c}"
headertext="Price"/>
<asp:templatefield headertext="Type">
<itemtemplate>
<asp:radiobuttonlist id="TypeList"
datasourceid="TypeSqlDataSource"
datatextfield="type"
enabled="false"
runat="server"/>
</itemtemplate>
</asp:templatefield>
<asp:boundfield datafield="type"/>
</columns>
</asp:gridview>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Pubs sample database. -->
<asp:sqldatasource id="TitleSqlDataSource"
selectcommand="SELECT [title], [price], [type] FROM [titles]"
connectionstring="server=localhost;database=pubs;integrated security=SSPI"
runat="server">
</asp:sqldatasource>
<asp:sqldatasource id="TypeSqlDataSource"
selectcommand="SELECT Distinct [type] FROM [titles]"
connectionstring="server=localhost;database=pubs;integrated security=SSPI"
runat="server">
</asp:sqldatasource>
</form>
</body>
</html>
Remarks
Use the ItemTemplate property to specify the custom content displayed for the items in a TemplateField object. Define the content by creating a template that specifies how the items are rendered.
Note
You can optionally define the AlternatingItemTemplate property in combination with the ItemTemplate property to create a different appearance for every other item in the data-bound control.
To specify a template, first place opening and closing <ItemTemplate> tags between the opening and closing tags of the <TemplateField> element. Next, add the custom content between the opening and closing <ItemTemplate> tags. The content can be as simple as plain text or more complex (embedding other controls in the template, for example).
To programmatically access a control defined in a template, first determine which TableCell object in the data-bound control contains the control. Next, use the Controls collection of the TableCell object to access the control. You can also use the FindControl method of the TableCell object to find the control, if the control has an ID property specified.
