最终效果:
实现效果,首先准备一张图片,高度为25pixel,宽度为1至3pixel渐变的图片。可以这里下载。
还要准备数据:
- Dictionary<int, int> Datas
- {
- get
- {
- Dictionary<int, int> d = new Dictionary<int, int>();
- d.Add(1, 35);
- d.Add(2, 45);
- d.Add(3, 20);
- return d;
- }
- }
ok,数据准备完了,在aspx里放三个Label控件,当然你可以显示在其它控件或是标签中,有一点要注意的是Width="300",它是渐变图片在100%的宽度:
- <asp:Label ID="Label1" runat="server" style="margin: 3px;" Text="" Width="300" BorderWidth="1"></asp:Label><br />
- <asp:Label ID="Label2" runat="server" style="margin: 3px;" Text="" Width="300" BorderWidth="1"></asp:Label><br />
- <asp:Label ID="Label3" runat="server" style="margin: 3px;" Text="" Width="300" BorderWidth="1"></asp:Label><br />
把数据显示于Label上:
- protected void Page_Load(object sender, EventArgs e)
- {
- Data_Binding();
- }
- private void Data_Binding()
- {
- int totals = 100;
- foreach (KeyValuePair<int, int> kvp in Datas)
- {
- double rate = kvp.Value / (double)totals;
- double width = rate * 300;
- 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 "<IMG height='21' src='images/bar.gif' width='" + width + "' align='absMiddle'> " + rate.ToString("p");
- }
原文链接:http://www.cnblogs.com/insus/archive/2012/04/01/2429442.html
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