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<%@ Page Language="C#" %>
<%@ Import Namespace="System.Collections.Generic" %>
<script runat="server">
private List<String> groceries = new List<String>();
void Page_Load()
{
groceries.Add("Milk");
groceries.Add("Steak");
groceries.Add("Fish");
}
protected void Sort_Command(object sender, CommandEventArgs e)
{
if (e.CommandName == "Sort")
{
switch (e.CommandArgument.ToString())
{
case "ASC":
groceries.Sort(SortASC);
break;
case "DESC":
groceries.Sort(SortDESC);
break;
}
}
}
void Page_PreRender()
{
bltGroceries.DataSource = groceries;
bltGroceries.DataBind();
}
int SortASC(string x, string y)
{
return String.Compare(x, y);
}
int SortDESC(string x, string y)
{
return String.Compare(x, y) * -1;
}
</script>
<html>
<head id="Head1" runat="server">
<title>Button Command</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button
id="btnSortAsc"
Text="Sort ASC"
CommandName="Sort"
CommandArgument="ASC"
OnCommand="Sort_Command"
Runat="server" />
<asp:Button
id="btnSortDESC"
Text="Sort DESC"
CommandName="Sort"
CommandArgument="DESC"
OnCommand="Sort_Command"
Runat="server" />
<br /><br />
<asp:BulletedList
id="bltGroceries"
Runat="server" />
</div>
</form>
</body>
</html>
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