FormView.TopPagerRow 属性
定义
重要
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获取表示在 FormViewRow 控件顶部显示的页导航行的 FormView 对象。
public:
virtual property System::Web::UI::WebControls::FormViewRow ^ TopPagerRow { System::Web::UI::WebControls::FormViewRow ^ get(); };[System.ComponentModel.Browsable(false)]
public virtual System.Web.UI.WebControls.FormViewRow TopPagerRow { get; }[<System.ComponentModel.Browsable(false)>]
member this.TopPagerRow : System.Web.UI.WebControls.FormViewRowPublic Overridable ReadOnly Property TopPagerRow As FormViewRow属性值
一个 FormViewRow，表示 FormView 控件中的顶部页导航行。
- 属性
示例
以下示例演示如何使用 TopPagerRow 属性访问控件顶部 FormView 显示的页码行。 然后，使用其他内容更新寻呼行。
<%@ 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 EmployeeFormView_ItemCreated(Object sender, EventArgs e)
{
// Get the pager row.
FormViewRow pagerRow = EmployeeFormView.TopPagerRow;
// Get the Label controls that display the current page information
// from the pager row.
Label pageNum = (Label)pagerRow.FindControl("PageNumberLabel");
Label totalNum = (Label)pagerRow.FindControl("TotalPagesLabel");
if ((pageNum != null) && (totalNum != null))
{
// Update the Label controls with the current page values.
int page = EmployeeFormView.PageIndex + 1;
int count = EmployeeFormView.PageCount;
pageNum.Text = page.ToString();
totalNum.Text = count.ToString();
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>FormView PagerTemplate Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>FormView PagerTemplate Example</h3>
<asp:formview id="EmployeeFormView"
datasourceid="EmployeeSource"
allowpaging="true"
datakeynames="EmployeeID"
onitemcreated="EmployeeFormView_ItemCreated"
runat="server">
<itemtemplate>
<table>
<tr>
<td>
<asp:image id="EmployeeImage"
imageurl='<%# Eval("PhotoPath") %>'
alternatetext='<%# Eval("LastName") %>'
runat="server"/>
</td>
<td>
<h3><%# Eval("FirstName") %> <%# Eval("LastName") %></h3>
<%# Eval("Title") %>
</td>
</tr>
</table>
</itemtemplate>
<pagertemplate>
<table width="100%">
<tr>
<td>
<asp:linkbutton id="PreviousButton"
text="<"
commandname="Prev"
runat="Server"/>
<asp:linkbutton id="NextButton"
text=">"
commandName="Next"
runat="Server"/>
</td>
<td align="right">
Page <asp:label id="PageNumberLabel" runat="server"/>
of <asp:label id="TotalPagesLabel" runat="server"/>
</td>
</tr>
</table>
</pagertemplate>
<pagersettings position="Top"
mode="NextPrevious"/>
</asp:formview>
<!-- 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="EmployeeSource"
selectcommand="Select [EmployeeID], [LastName], [FirstName], [Title], [PhotoPath] From [Employees]"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</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 EmployeeFormView_ItemCreated(ByVal sender As Object, ByVal e As EventArgs)
' Get the pager row.
Dim pagerRow As FormViewRow = EmployeeFormView.TopPagerRow
' Get the Label controls that display the current page information
' from the pager row.
Dim pageNum As Label = CType(pagerRow.FindControl("PageNumberLabel"), Label)
Dim totalNum As Label = CType(pagerRow.FindControl("TotalPagesLabel"), Label)
If pageNum IsNot Nothing And totalNum IsNot Nothing Then
' Update the Label controls with the current page values.
Dim page As Integer = EmployeeFormView.PageIndex + 1
Dim count As Integer = EmployeeFormView.PageCount
pageNum.Text = page.ToString()
totalNum.Text = count.ToString()
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>FormView PagerTemplate Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>FormView PagerTemplate Example</h3>
<asp:formview id="EmployeeFormView"
datasourceid="EmployeeSource"
allowpaging="true"
datakeynames="EmployeeID"
onitemcreated="EmployeeFormView_ItemCreated"
runat="server">
<itemtemplate>
<table>
<tr>
<td>
<asp:image id="EmployeeImage"
imageurl='<%# Eval("PhotoPath") %>'
alternatetext='<%# Eval("LastName") %>'
runat="server"/>
</td>
<td>
<h3><%# Eval("FirstName") %> <%# Eval("LastName") %></h3>
<%# Eval("Title") %>
</td>
</tr>
</table>
</itemtemplate>
<pagertemplate>
<table width="100%">
<tr>
<td>
<asp:linkbutton id="PreviousButton"
text="<"
commandname="Prev"
runat="Server"/>
<asp:linkbutton id="NextButton"
text=">"
commandName="Next"
runat="Server"/>
</td>
<td align="right">
Page <asp:label id="PageNumberLabel" runat="server"/>
of <asp:label id="TotalPagesLabel" runat="server"/>
</td>
</tr>
</table>
</pagertemplate>
<pagersettings position="Top"
mode="NextPrevious"/>
</asp:formview>
<!-- 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="EmployeeSource"
selectcommand="Select [EmployeeID], [LastName], [FirstName], [Title], [PhotoPath] From [Employees]"
connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
runat="server"/>
</form>
</body>
</html>
注解
当将 属性设置为 true) 时， (AllowPaging启用分页时，控件中FormView会自动显示名为“寻呼行”的附加行。 寻呼行包含允许用户导航到其他记录的控件，并且可以显示在控件的顶部、底部或同时显示在控件的顶部和底部。
TopPagerRow使用 属性以编程方式访问对象，FormViewRow该对象表示控件中的FormView顶级页码行。
备注
属性TopPagerRow仅在 控件在 事件中创建ItemCreated页首行后FormView才可用。
当需要以编程方式操作页首页浏览行时（例如添加自定义内容时），通常使用此属性。 对 属性的任何修改 TopPagerRow 都必须在 FormView 控件绑定到数据后执行;否则，控件 FormView 将覆盖任何更改。
