SortDirection 列舉
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
指定項目清單的排序方向。
public enum class SortDirectionpublic enum SortDirectiontype SortDirection = Public Enum SortDirection- 繼承
欄位
| Ascending | 0 | 由小到大排序。 例如，從 A 到 Z。 |
| Descending | 1 | 由大到小排序。 例如，從 Z 到 A。 |
範例
下列程式碼範例示範如何使用 SortDirection 列舉來判斷控制項顯示其專案的方向 GridView 。 控制項 SortDirection 的 GridView 屬性會針對其值進行測試，以判斷排序方向。
<%@ 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>
備註
列舉 SortDirection 是用來表示排序專案的方向。 屬性通常會使用屬性 (，例如 SortDirection 類別的 GridView 屬性) ，以指出控制項中顯示專案的順序。