ASP.NET Rating Control

taihip

Rate me:

4.05/5 (38 votes)

18 Apr 2011CPOL

112.2K

3.8K

An ASP.NET rating control

Download source code - 4.68 KB

Introduction

There are many free rating controls on the internet, but I didn't find any control which fits these features:

Works well in UpdatePanel, GridView
Easy to customize UI and behavior
Auto generates JavaScript (does not need an external JS file)

So I decided to write an ASP.NET custom control as per my requirements.

Using the Code

How to use this control?

Add a reference to the control,

and:

ASP.NET

<%@ Page Language="C#" AutoEventWireup="true" 
	Codebehind="WebForm1.aspx.cs" Inherits="WebApplication1.WebForm1" %>

<%@ Register Namespace="ASPnetRater" Assembly="ASPnetRater" TagPrefix="cc" %>
<!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 runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <cc:Rater ID="Rater1" runat="server" 
		ImageOff="/assets/images/rating_grey_star.gif"
                Value="3" MaxValue="5" ImageOn="/assets/images/rating_red_star.gif"
                ToolTip="I'm a rater" OnCommand="Rater1_Command" 
		ImageOver="/assets/images/rating_yellow_star.gif"></cc:Rater>
        </div>
    </form>
</body>
</html>

This is the result:

Normal Status

Hover Status

Points of Interest

If you want the control to work well in an UpdatePanel, please make the control become a trigger of UpdatePanel:

ScriptManager1.RegisterAsyncPostBackControl(Rater1);

History

April 08, 2009: First draft
April 15, 2010: Updates
- Fixed a bug while posting back, as reported by yuyejian
- Uses the Enabled property to enable/disable the control
- Image's URL supports URLs like "~/assets/..."
June 29, 2010: Updated source code

Fixed bug reported by maorray (Doesn't save/load the value of the rater to ControlState)

April 18, 2011: Updated source code

Added CommandName property
Calls base.RaiseBubbleEvent() in OnCommand()
This update will help the parent control such as GridView, DataList and the like to catch OnItemCommand event.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Written By

taihip

Web Developer SEA-Solutions

Vietnam

This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.

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