color dropdown

Posted Date: 15 Dec 2008	Resource Type: Code Snippets	Category: Graphics
Author: pavan dwivedi	Member Level: Silver
Rating:	Points: 10

OnSelectedIndexChanged="ddlMultiColor_OnSelectedIndexChanged"
runat="server" AutoPostBack="true">

At the server side, we need the following namespaces imported for further coding.

using System;
using System.Web;
using System.Reflection;
using System.Drawing;
using System.Collections.Generic;
Let me show the Page.Load event first. During this event, a drop down list is populated and color manipulation is performed.

protected void Page_Load(object sender, EventArgs e)
{
if (Page.IsPostBack == false)
{
populateDdlMultiColor();
colorManipulation();
}
}
Let us now go through the populateDdlMultiColor() method.

private void populateDdlMultiColor()
{
ddlMultiColor.DataSource = finalColorList();
ddlMultiColor.DataBind();
}
Here goes the code for the finalColorList() method.

private List finalColorList()
{
string[] allColors = Enum.GetNames(typeof(System.Drawing.KnownColor));
string[] systemEnvironmentColors =
new string[(
typeof(System.Drawing.SystemColors)).GetProperties().Length];

int index = 0;

foreach (MemberInfo member in (
typeof(System.Drawing.SystemColors)).GetProperties())
{
systemEnvironmentColors[index ++] = member.Name;
}

List finalColorList = new List();

foreach (string color in allColors)
{
if (Array.IndexOf(systemEnvironmentColors, color) < 0)
{
finalColorList.Add(color);
}
}
return finalColorList;
}

Attachments

color dropdown ()

Responses

No responses found. Be the first to respond and make money from revenue sharing program.

Feedbacks

Popular Tags

What are tags ?

Search Tags

Color dropdown .

Post Feedback

This is a strictly moderated forum. Only approved messages will appear in the site. Please use 'Spell Check' in Google toolbar before you submit.
You must Sign In to post a response.

	Next Resource: Zooming in C#
	Previous Resource: Watermark an Image in C#.net / ASP.net
	Return to Discussion Resource Index
	Post New Resource
	Category: Graphics

Post resources and earn money!

More Resources