DetailsView.HeaderRow 属性
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
获取表示 DetailsViewRow 控件中的标题行的 DetailsView 对象。
public:
virtual property System::Web::UI::WebControls::DetailsViewRow ^ HeaderRow { System::Web::UI::WebControls::DetailsViewRow ^ get(); };[System.ComponentModel.Browsable(false)]
public virtual System.Web.UI.WebControls.DetailsViewRow HeaderRow { get; }[<System.ComponentModel.Browsable(false)>]
member this.HeaderRow : System.Web.UI.WebControls.DetailsViewRowPublic Overridable ReadOnly Property HeaderRow As DetailsViewRow属性值
一个 DetailsViewRow，表示 DetailsView 控件中的标题行。
- 属性
示例
下面的代码示例演示如何在 事件期间ItemCreated使用 HeaderRow 属性访问控件的DetailsView标题行。 Label然后，使用当前页码更新自定义标题行中的控件。
<%@ 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 CustomerDetailView_ItemCreated(Object sender, EventArgs e)
{
// Get the header row.
DetailsViewRow headerRow = CustomerDetailView.HeaderRow;
// Get the Label control that displays the current page information
// from the header row.
Label pageNum = (Label)headerRow.FindControl("PageNumberLabel");
if(pageNum != null)
{
// Update the Label control with the current page number.
int page = CustomerDetailView.DataItemIndex + 1;
pageNum.Text = "Page " + page.ToString ();
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>DetailsView HeaderTemplate Example</title>
</head>
<body>
<form id="Form1" runat="server">
<h3>DetailsView HeaderTemplate Example</h3>
<asp:detailsview id="CustomerDetailView"
datasourceid="DetailsViewSource"
datakeynames="CustomerID"
autogeneraterows="true"
allowpaging="true"
onitemcreated="CustomerDetailView_ItemCreated"
runat="server">
<headerstyle backcolor="Navy"
forecolor="White"/>
<pagersettings Mode="NextPreviousFirstLast"/>
<headertemplate>
<table width="100%">
<tr>
<td align="left">
<asp:Image id="LogoImage"
imageurl="~\images\Logo.jpg"
AlternateText="Our logo"
runat="server"/>
</td>
<td align="right" valign="bottom">
<asp:Label id="PageNumberLabel"
font-size="9"
forecolor="DodgerBlue"
runat="server"/>
</td>
</tr>
</table>
</headertemplate>
</asp:detailsview>
<!-- 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="DetailsViewSource" runat="server"
ConnectionString=
"<%$ ConnectionStrings:NorthWindConnectionString%>"
InsertCommand="INSERT INTO [Customers]([CustomerID],
[CompanyName], [Address], [City], [PostalCode], [Country])
VALUES (@CustomerID, @CompanyName, @Address, @City,
@PostalCode, @Country)"
SelectCommand="Select [CustomerID], [CompanyName],
[Address], [City], [PostalCode], [Country] From
[Customers]">
</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 CustomerDetailView_ItemCreated(ByVal sender As Object, _
ByVal e As EventArgs)
' Get the header row.
Dim headerRow As DetailsViewRow = CustomerDetailView.HeaderRow
' Get the Label control that displays the current page information
' from the header row.
Dim pageNum As Label = _
CType(headerRow.FindControl("PageNumberLabel"), Label)
If Not pageNum Is Nothing Then
' Update the Label control with the current page number.
Dim page As Integer = CustomerDetailView.DataItemIndex + 1
pageNum.Text = "Page " & page.ToString()
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>DetailsView HeaderTemplate Example</title>
</head>
<body>
<form id="Form1" runat="server">
<h3>DetailsView HeaderTemplate Example</h3>
<asp:detailsview id="CustomerDetailView"
datasourceid="DetailsViewSource"
datakeynames="CustomerID"
autogeneraterows="true"
allowpaging="true"
onitemcreated="CustomerDetailView_ItemCreated"
runat="server">
<headerstyle backcolor="Navy"
forecolor="White"/>
<pagersettings Mode="NextPreviousFirstLast"/>
<headertemplate>
<table width="100%">
<tr>
<td align="left">
<asp:Image id="LogoImage"
imageurl="~\images\Logo.jpg"
AlternateText="Our logo"
runat="server"/>
</td>
<td align="right" valign="bottom">
<asp:Label id="PageNumberLabel"
font-size="9"
forecolor="DodgerBlue"
runat="server"/>
</td>
</tr>
</table>
</headertemplate>
</asp:detailsview>
<!-- 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="DetailsViewSource" runat="server"
ConnectionString=
"<%$ ConnectionStrings:NorthWindConnectionString%>"
InsertCommand="INSERT INTO [Customers]([CustomerID],
[CompanyName], [Address], [City], [PostalCode], [Country])
VALUES (@CustomerID, @CompanyName, @Address, @City,
@PostalCode, @Country)"
SelectCommand="Select [CustomerID], [CompanyName],
[Address], [City], [PostalCode], [Country] From
[Customers]">
</asp:SqlDataSource>
</form>
</body>
</html>
注解
设置 或 HeaderTemplate 属性时HeaderText，标题行显示在控件顶部DetailsView。 HeaderRow使用 属性以编程方式访问DetailsViewRow表示标题行的对象。
注意
只有在 HeaderRow 控件在 事件中创建ItemCreated标题行后， DetailsView 属性才可用。
当需要以编程方式操作标题行时（例如在添加自定义内容时），通常使用此属性。 对 属性的任何修改 HeaderRow 都必须在呈现控件后 DetailsView 执行;否则，控件 DetailsView 将覆盖任何更改。
