Asp. NET Display Gradient Picture Realization Method _ practical skills

Let me give you a final result:

To achieve the effect, first prepare a picture, height of 25pixel, width of 1 to 3pixel gradient picture. can download here.

Also prepare the data:

Dictionary<int, int> Datas 
 { 
 get 
 { 
  dictionary<int, int> d = new Dictionary<int, int> (); 
  D.add (1, km); 
  D.add (2,); 
  D.add (3); 
  return D; 
 } 
 } 

OK, the data is ready, put three label controls in ASPX, of course you can display in other controls or tags, one thing to note is width= "300", which is the gradient picture at 100% width:

<asp:label id= "Label1" runat= "Server" style= "MARGIN:3PX;" text= "" Width= "borderwidth=" 1 ></asp:label><br/> <asp:label id= " 
 Label2" runat= "Server" Style= "MARGIN:3PX;" text= "" Width= "borderwidth=" 1 ></asp:label><br/> <asp:label id= " 
 Label3" runat= "Server" Style= "MARGIN:3PX;" Text= "" "Width=" borderwidth= "1" ></asp:label><br/> 

To display the data on a label:

protected void Page_Load (object sender, EventArgs e) 
 { 
 data_binding (); 
 } 
 
 private void Data_binding () 
 { 
 int totals = m; 
 foreach (Keyvaluepair<int, int> kvp in Datas) 
 { 
  double rate = kvp. Value/(double) totals; 
 
  Double width = rate *; 
  Switch (KVP. Key) 
  {case 
  1: this 
   . Label1.Text = gradientimage (width, rate); 
   break; 
  Case 2: this 
   . Label2.Text = gradientimage (width, rate); 
   break; 
  Case 3: This 
   . Label3.text = gradientimage (width, rate); 
   break; 
  } 
 
 }} private string Gradientimage (double width, double rate) 
 {return 
 " ' + rate. ToString ("P"); 
 

The above is asp.net to realize the gradient picture method, hope to be helpful to everybody's study.