TemplateField.ItemTemplate 属性

参考

定义

命名空间:: System.Web.UI.WebControls

程序集:: System.Web.dll

重要

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获取或设置用于显示数据绑定控件中的项的模板。

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, set

Public Overridable Property ItemTemplate As ITemplate

属性值

ITemplate

一个实现了 ITemplate 的对象，该对象包含用于显示 TemplateField 中的项的模板。默认值为 null，指示未设置此属性。

属性: BrowsableAttribute PersistenceModeAttribute TemplateContainerAttribute

示例

下面的代码示例演示如何使用 ItemTemplate 属性为控件中GridView字段的TemplateField项创建自定义模板。模板在控件中 RadioButtonList 显示字段的值。


<%@ 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>

注解

ItemTemplate使用属性指定为对象中的TemplateField项显示的自定义内容。通过创建一个模板来定义内容，该模板指定项的呈现方式。

注意

可以选择将属性与 ItemTemplate 属性结合使用，AlternatingItemTemplate为数据绑定控件中的每个其他项创建不同的外观。

若要指定模板，请首先在元素的开始标记和结束 <ItemTemplate> 标记之间放置开始标记和结束标记 <TemplateField> 。接下来，在开始标记和结束 <ItemTemplate> 标记之间添加自定义内容。内容可以像纯文本一样简单，也可以是更复杂的， (在模板中嵌入其他控件，例如) 。

若要以编程方式访问模板中定义的控件，请先确定数据绑定控件中的哪个 TableCell 对象包含该控件。接下来，使用 Controls 对象的集合 TableCell 来访问控件。如果控件指定了ID属性，也可以使用 FindControl 对象的方法来TableCell查找控件。

适用于

通过

TemplateField.ItemTemplate 属性

定义

属性值

示例

注解

适用于

另请参阅

其他资源