SortDirection 枚举
重要
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指定对项列表进行排序的方向。
public enum class SortDirectionC#
public enum SortDirectiontype SortDirection = Public Enum SortDirection- 继承
| Ascending | 0 | 从小到大排序。 例如，从 A 到 Z。 |
| Descending | 1 | 从大到小排序。 例如，从 Z 到 A。 |
下面的代码示例演示如何使用 SortDirection 枚举来确定控件显示其项的方向 GridView 。 控件 SortDirection 的属性 GridView 已针对其值进行测试，以确定排序方向。
ASP.NET (C#)
<%@ 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 AuthorsGridView_Sorted(Object sender, EventArgs e)
{
// Display the sort direction.
if(AuthorsGridView.SortDirection == SortDirection.Ascending)
{
Message.Text = "Sorting in ascending order.";
}
else
{
Message.Text = "Sorting in descending order.";
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>SortDirection Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>SortDirection Example</h3>
<asp:label id="Message"
forecolor="Red"
runat="server"/>
<br/><br/>
<asp:gridview id="AuthorsGridView"
datasourceid="AuthorsSqlDataSource"
allowsorting="true"
onsorted="AuthorsGridView_Sorted"
runat="server"/>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Pubs sample database. -->
<asp:sqldatasource id="AuthorsSqlDataSource"
selectcommand="SELECT [au_id], [au_lname], [au_fname], [address], [city], [state], [zip], [contract] FROM [authors]"
updatecommand="UPDATE authors SET au_lname=@au_lname, au_fname=@au_fname, address=@address, city=@city, state=@state, zip=@zip, contract=@contract WHERE (authors.au_id = @au_id)"
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 AuthorsGridView_Sorted(ByVal sender As Object, ByVal e As EventArgs)
' Display the sort direction.
If AuthorsGridView.SortDirection = SortDirection.Ascending Then
Message.Text = "Sorting in ascending order."
Else
Message.Text = "Sorting in descending order."
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>SortDirection Example</title>
</head>
<body>
<form id="form1" runat="server">
<h3>SortDirection Example</h3>
<asp:label id="Message"
forecolor="Red"
runat="server"/>
<br/><br/>
<asp:gridview id="AuthorsGridView"
datasourceid="AuthorsSqlDataSource"
allowsorting="true"
onsorted="AuthorsGridView_Sorted"
runat="server"/>
<!-- This example uses Microsoft SQL Server and connects -->
<!-- to the Pubs sample database. -->
<asp:sqldatasource id="AuthorsSqlDataSource"
selectcommand="SELECT [au_id], [au_lname], [au_fname], [address], [city], [state], [zip], [contract] FROM [authors]"
updatecommand="UPDATE authors SET au_lname=@au_lname, au_fname=@au_fname, address=@address, city=@city, state=@state, zip=@zip, contract=@contract WHERE (authors.au_id = @au_id)"
connectionstring="server=localhost;database=pubs;integrated security=SSPI"
runat="server">
</asp:sqldatasource>
</form>
</body>
</html>
枚举 SortDirection 用于表示项目排序的方向。 属性通常由属性 (（如SortDirectionGridView类的属性) ）用来指示在控件中显示项的顺序。
| 产品 | 版本 |
|---|---|
| .NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 |