刚写的一个简单柱状图表

最新推荐文章于 2023-01-03 09:51:22 发布

qing_feixiang

最新推荐文章于 2023-01-03 09:51:22 发布

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最近需要用到一个图表来展示数据，没事干闲的蛋疼就自己仿照写了一个，先看一下效果：

看到效果后不废话了，直接贴代码：

页面代码如下：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="testchart.aspx.cs" Inherits="_Default" %> <%@ Register Assembly="DevExpress.XtraCharts.v8.1.Web, Version=8.1.6.0, Culture=neutral, PublicKeyToken=9b171c9fd64da1d1" Namespace="DevExpress.XtraCharts.Web" TagPrefix="dxchartsui" %> <%@ Register Assembly="DevExpress.XtraCharts.v8.1, Version=8.1.6.0, Culture=neutral, PublicKeyToken=9b171c9fd64da1d1" Namespace="DevExpress.XtraCharts" TagPrefix="cc1" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>无标题页</title> </head> <body> <form id="form1" runat="server"> <div> <select id="sel_alertType" runat="server"> <option selected="selected"></option> </select> <br /> <dxchartsui:WebChartControl ID="WebChartControl1" runat="server" Width="965px" Height="200px"> <SeriesTemplate LabelTypeName="SideBySideBarSeriesLabel" PointOptionsTypeName="PointOptions" SeriesViewTypeName="SideBySideBarSeriesView"> <View HiddenSerializableString="to be serialized"> </View> <Label HiddenSerializableString="to be serialized"> <FillStyle FillOptionsTypeName="SolidFillOptions"> <Options HiddenSerializableString="to be serialized" /> </FillStyle> </Label> <PointOptions HiddenSerializableString="to be serialized"> </PointOptions> <LegendPointOptions HiddenSerializableString="to be serialized"> </LegendPointOptions> </SeriesTemplate> <FillStyle FillOptionsTypeName="SolidFillOptions"> <Options HiddenSerializableString="to be serialized" /> </FillStyle> </dxchartsui:WebChartControl> </div> </form> </body> </html>

然后是后台代码：

using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using DevExpress.XtraCharts; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { // WebChartControl1.DataSource = getDataTest(); //sel_alertType.DataSource = getDataTest(); DataSet ds = getDataTest(); for (int i = 0; i < ds.Tables[0].Rows.Count; i++) { string name = ds.Tables[0].Rows[i]["appName"].ToString(); double value = Convert.ToDouble(ds.Tables[0].Rows[i]["id"]); Series series1 = new Series(name, ViewType.Bar); series1.Points.Add(new SeriesPoint(name, value)); WebChartControl1.Series.Add(series1); } } //用于测试的假数据 public DataSet getDataTest() { DataSet ds = new DataSet(); DataTable dt = new DataTable(); DataRow dr; //新增三列 DataColumn colItem0 = new DataColumn("id", Type.GetType("System.Int32")); DataColumn colItem1 = new DataColumn("appName", Type.GetType("System.String")); DataColumn colItem2 = new DataColumn("serverName", Type.GetType("System.String")); DataColumn colItem3 = new DataColumn("visitedNum", Type.GetType("System.Int32")); //将他们添加到DataTable中 dt.Columns.Add(colItem0); dt.Columns.Add(colItem1); dt.Columns.Add(colItem2); dt.Columns.Add(colItem3); for (int i = 0; i <= 10; i++) { //循环List给DataTable的每一行赋值 dr = dt.NewRow(); dr["id"] = i; dr["appName"] = "appName" + i; dr["serverName"] = "serverName" + i; dr["visitedNum"] = 1000 + i; dt.Rows.Add(dr); } //将该DataTable添加到DataSet中 ds.Tables.Add(dt); return ds; } }

DXperience的图标控件WebChartControl还是比较好用的，而且也提供了其他的很多图表样式，像柱状图、饼状图等。

这么就有个单实列的系统弄的我很烦，这已经不是我一个人头痛的问题了，哈哈。。。

下面就是那段只能启一个进程的代码：

bool isExist;

string vStr = Application.ExecutablePath;

vStr = vStr.Substring(vStr.LastIndexOf('//') + 1);

System.Threading.Mutex stm = new System.Threading.Mutex(true, vStr, out isExist);

if (!isExist)

{

if (!File.Exists(AppDomain.CurrentDomain.BaseDirectory + "Temp.xml"))

MessageBox.Show("系统已经运行,不能运行多个实例！");

Environment.Exit(1);//实例已经存在,退出程序