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File: ServerTabs.cs
using System;
using System.Collections;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace myControls
{
[ControlBuilder(typeof(ServerTabsBuilder))]
[ParseChildren(false)]
public class ServerTabs : WebControl, IPostBackEventHandler
{
public int SelectedTabIndex
{
get
{
if (ViewState["SelectedTabIndex"] == null)
return 0;
else
return (int)ViewState["SelectedTabIndex"];
} set
{
ViewState["SelectedTabIndex"] = value;
}
}
protected override void RenderContents(HtmlTextWriter writer)
{
for (int i = 0; i < this.Controls.Count; i++)
{
ServerTab tab = (ServerTab)this.Controls[i];
string eRef = Page.ClientScript.GetPostBackClientHyperlink(this, i.ToString());
if (SelectedTabIndex == i)
writer.AddAttribute(HtmlTextWriterAttribute.Class, "tab selectedTab");
else
writer.AddAttribute(HtmlTextWriterAttribute.Class, "tab");
writer.RenderBeginTag(HtmlTextWriterTag.Div);
writer.AddAttribute(HtmlTextWriterAttribute.Href, eRef);
writer.RenderBeginTag(HtmlTextWriterTag.A);
writer.Write(tab.Text);
writer.RenderEndTag();
writer.RenderEndTag();
}
writer.Write("<br style='clear:both' />");
writer.AddAttribute(HtmlTextWriterAttribute.Class, "tabContents");
writer.RenderBeginTag(HtmlTextWriterTag.Div);
this.Controls[SelectedTabIndex].RenderControl(writer);
writer.RenderEndTag();
}
protected override void AddParsedSubObject(object obj)
{
if (obj is ServerTab)
base.AddParsedSubObject(obj);
}
protected override HtmlTextWriterTag TagKey
{
get
{
return HtmlTextWriterTag.Div;
}
}
public void RaisePostBackEvent(string eventArgument)
{
SelectedTabIndex = Int32.Parse(eventArgument);
}
}
public class ServerTabsBuilder : ControlBuilder
{
public override Type GetChildControlType(string tagName, IDictionary attribs)
{
if (String.Compare(tagName, "tab", true) == 0)
return typeof(ServerTab);
else
return null;
}
}
public class ServerTab : Control
{
private string _Text;
public string Text
{
get { return _Text; }
set { _Text = value; }
}
}
}
File: ShowServerTabs.aspx
<%@ Page Language="C#" %>
<%@ Register TagPrefix="custom" Namespace="myControls" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<style type="text/css">
.tab
{
float:left;
position:relative;
top:1px;
background-color:#eeeeee;
border:solid 1px black;
padding:0px 15px;
margin-left:5px;
}
.tab a
{
text-decoration:none;
}
.selectedTab
{
background-color:white;
border-bottom:solid 1px white;
}
.tabContents
{
border:solid 1px black;
background-color:white;
padding:10px;
height:200px;
}
</style>
<title>Show ServerTabs</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<custom:ServerTabs
ID="ServerTabs1"
Runat="Server">
<tab Text="First Tab">
Contents of the first tab
</tab>
<tab Text="Second Tab">
Contents of the second tab
</tab>
<tab Text="Third Tab">
Contents of the third tab
</tab>
</custom:ServerTabs>
</div>
</form>
</body>
</html>
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