SortDirection Enum
Definition
Important
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Specifies the direction in which to sort a list of items.
public enum class SortDirectionpublic enum SortDirectiontype SortDirection = Public Enum SortDirection- Inheritance
Fields
| Name | Value | Description |
|---|---|---|
| Ascending | 0 | Sort from smallest to largest. For example, from A to Z. |
| Descending | 1 | Sort from largest to smallest. For example, from Z to A. |
Examples
The following code example demonstrates how to use the SortDirection enumeration to determine the direction in which the GridView control is displaying its items. The SortDirection property of the GridView control is tested for its value to determine the sort direction.
<%@ 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>
Remarks
The SortDirection enumeration is used to represent the direction in which items are sorted. It is commonly used by properties (such as the SortDirection property of the GridView class) to indicate the order in which items are displayed in a control.
