Shulou(Shulou.com)06/03 Report--

This article introduces the relevant knowledge of "how to generate pie and bar charts in asp.net". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. Common methods for generating graphics:

The copy code is as follows:

Using System

Using System.Collections.Generic

Using System.Text

/ /

/ / using System.Data

/ / using System.Web.UI.WebControls

/ /

Using System.Drawing

Using System.Drawing.Imaging

Namespace Tools

{

Public static class OWCImageHelp

{

/ / /

/ / dynamically generate histogram and pie chart

/ / /

/ / Fields to be displayed in row coordinates

/ / the number to be displayed in the ordinate

/ / title

Public static void GetZBImage (string [] arrValueNames, int [] arrValues, string title)

{

Bitmap objBitMap = new Bitmap (650,300)

Graphics objGraphics

ObjGraphics = Graphics.FromImage (objBitMap)

ObjGraphics.Clear (Color.White)

/ / int [] arrValues = {40000, 32000, 24000, 30000, 36000, 28000}

/ / string [] arrValueNames = new string [] {"first", "second", "third", "fourth", "fifth", "sixth"}

ObjGraphics.DrawString (title, new System.Drawing.Font (Song style, 16), Brushes.Blue, new PointF (5,5))

PointF symbolLeg = new PointF (335,20)

PointF descLeg = new PointF (360,16)

/ / draw the figure in the description section

For (int I = 0; I < arrValueNames.Length; iTunes +)

{

ObjGraphics.FillRectangle (new SolidBrush (GetColor (I)), symbolLeg.X, symbolLeg.Y, 20, 10)

ObjGraphics.DrawRectangle (Pens.Black, symbolLeg.X, symbolLeg.Y, 20, 10)

ObjGraphics.DrawString (arrValueNams [I] .ToString (), new System.Drawing.Font ("Verdana", 10), Brushes.Black, descLeg)

SymbolLeg.Y + = 15

DescLeg.Y + = 15

}

Float TotalValues = 0

For (int I = 0; I

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