codetoad.com
  ASP Shopping CartForum & BBS
  - all for $20 from CodeToad Plus!
  
  Home || ASP | ASP.Net | C++/C# | DHTML | HTML | Java | Javascript | Perl | VB | XML || CodeToad Plus! || Forums || RAM 
Search Site:



Home » ASP » Article

ASP.NET Bar Chart Graph

Article by: Chris Goldfarb (4/8/2003)
Bookmark us now! Add to Favourites
Email a friend!Tell a friend
Summary: Complete source code to generate a horizontal bar chart graph in ASP.NET
Viewed: 182030 times Rating (84 votes): 
 3.9 out of 5
 Rate this Article  Read Comments  Post Comments

ASP.NET Bar Chart Graph



Online Demo

This script generates a series of horizontal bars in graph chart format, on an .aspx web page.

To run the graph script is very simple. First save the following code into a file called dotnetgraph.ascx

Select All Code


Then save the following in the same directory to a file called dotnetgraph.aspx

Select All Code


Within this aspx page you will see we set all the quantities and labels for the graph within the Page_Load function.

There is obviously plenty of scope for development in this section - for example, pulling these values directly from a database. But hopefully the elegant simplicity of these files will be a useful introduction to the concepts involved.

Added by the author

I was still a little new to .NET when I wrote this article two years ago , so there are a couple things I'd change if implementing now: 1. Use StringBuilder instead for the RenderItem method:
private String RenderItem (Int32 iVal, Int32 iMod, String sColor) {
StringBuilder sb = new StringBuilder();
sb.Append("<table border=0 bgcolor=" + sColor + " cellpadding=0 cellspacing=0><tr>");
sb.Append("<td align=center width=" + (iVal * iMod) + " nobr nowrap>");
sb.Append("<b>" + iVal + "</b>");
sb.Append("</tr><td></table>");
return sb.ToString();
}


StringBuilder is orders of magnitude faster than manipulating strings directly (strings are immutable).




CodeToad Experts

Can't find the answer?
Our Site experts are answering questions for free in the CodeToad forums
Rate this article:     Poor Excellent
View highlighted Comments
User Comments on 'ASP.NET Bar Chart Graph'
RELATED ARTICLES
ASP FilesystemObject
by Jeff Anderson
An introduction to the Filesystemobject
ASP GetTempName
by Jeff Anderson
Use the GetTempName method to create a randomly generated temporary file on the server.
ASP Format Date and Time Script
by Jeff Anderson
An ASP script showing the variety of date and time formats possible using the FormatDateTime Function.
ASP OpenTextFile
by Jeff Anderson
An introduction to the OpenTextFile Method of the FileSystemObject
Email validation using Regular Expression
by Jeff Anderson
Using regular expression syntax is an exellent way to thoroughly validate an email. It's possible in ASP.
Add or Subtract Hours in SQL or ASP using DateAdd
by Jeff Anderson
A beginners guide to using the SQL DATEADD function to add or subtract hours. Particularly useful when setting the time displayed on the ASP page to a different time zone (eg when the server is in the US, and the site is for a UK audience).
The asp:radiobutton and asp:radiobuttonlist control
by David Sussman, et al
In HTML, radio buttons are used when we need to make multiple sets of choices available, but we want the user to select only one of them.
The asp:checkbox and asp:checkboxlist control
by David Sussman, et al
Checkboxes are similar to radio buttons, and in HTML, they were used to allow multiple choices from a group of buttons.
ASP FileExists
by Jeff Anderson
An introduction to the FileExistsMethod of the FileSystemObject
Concatenate strings in sql
by Jeff Anderson
A brief introduction to concatenating strings in an sql query (using SQL server or access databases).








Recent Forum Threads
• Run a program both on windows and linux
• VERO.SurfCAM.v2014
• Schlumberger.Petrel.V2013.2
• Petrel.V2013.2
• Altair.HyperWorks.v12
• VoluMill.v6.1
• VoluMill.NEXION.6
• VERO.SurfCAM.v2014
• Schlumberger.Petrel.V2013.2


Recent Articles
ASP GetTempName
Decode and Encode UTF-8
ASP GetFile
ASP FolderExists
ASP FileExists
ASP OpenTextFile
ASP FilesystemObject
ASP CreateFolder
ASP CreateTextFile
Javascript Get Selected Text


© Copyright codetoad.com 2001-2014