【转】使用DevExpress的WebChartControl控件绘制图表(柱状图、折线图、饼图)
第一次写博，没什么经验，主要是把最近自己对Dev的一些研究贴出来大家共同探讨，有不足之处望大家帮忙斧正。
WebChartControl是DevExpress控件群下的一个Web图表控件，它使用非常的方便，生成的图表也相当的漂亮。
先贴出几张WebChartControl生成的图表：
Web页面代码WebChartControl.aspx：
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebChartControl.aspx.cs" Inherits="DevDemo.WebChartControl" %> <%@ Register Assembly="DevExpress.XtraCharts.v11.2.Web, Version=11.2.5.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a"
Namespace="DevExpress.XtraCharts.Web" TagPrefix="dxchartsui" %> <%@ Register assembly="DevExpress.XtraCharts.v11.2, Version=11.2.5.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" 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></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<dxchartsui:WebChartControl ID="WebChartControl1" runat="server" Width="500px" Height="350px">
</dxchartsui:WebChartControl> <dxchartsui:WebChartControl ID="WebChartControl3" runat="server" Width="500px" Height="350px">
</dxchartsui:WebChartControl>
<dxchartsui:WebChartControl ID="WebChartControl2" runat="server" Width="500px" Height="350px">
</dxchartsui:WebChartControl>
<dxchartsui:WebChartControl ID="WebChartControl4" runat="server" Width="500px" Height="350px">
</dxchartsui:WebChartControl>
</div>
</form>
</body>
</html>
Web页面后台代码WebChartControl.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using DevExpress.XtraCharts;
using System.Drawing; namespace DevDemo
{
public partial class WebChartControl : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
this.DrawBar();
this.DrawLine();
this.DrawPie();
this.DrawBarAndLine();
} /// <summary>
/// 绘制柱状图
/// </summary>
private void DrawBar()
{ ChartServices.SetChartTitle(this.WebChartControl1, true, "2012年12月第1周收入情况", true, , StringAlignment.Center, ChartTitleDockStyle.Top, true, new Font("宋体", , FontStyle.Bold), Color.Red, ); //如不需显示图表标题可不用调用本段代码，下同
ChartServices.DrawChart(this.WebChartControl1, "收益", ViewType.Bar, ServiceData.GetWeekMoneyAndCost(), "week", "money");
ChartServices.DrawChart(this.WebChartControl1, "成本", ViewType.Bar, ServiceData.GetWeekMoneyAndCost(), "week", "cost");
ChartServices.SetAxisX(this.WebChartControl1, true, StringAlignment.Center, "星期", Color.Red, true, new Font("宋体", , FontStyle.Bold)); //如不需显示X轴标题，可不调用该行代码，下同
ChartServices.SetAxisY(this.WebChartControl1, true, StringAlignment.Center, "金额", Color.Red, true, new Font("宋体", , FontStyle.Bold)); //如不需显示Y轴标题，可不调用该行代码，下同
} /// <summary>
/// 绘制折线图
/// </summary>
private void DrawLine()
{
ChartServices.SetChartTitle(this.WebChartControl3,true,"2012年12月第1周收入情况", true, , StringAlignment.Center, ChartTitleDockStyle.Top, true, new Font("宋体", , FontStyle.Bold), Color.Red, );
ChartServices.DrawChart(this.WebChartControl3, "收益", ViewType.Line, ServiceData.GetWeekMoneyAndCost(), "week", "money");
ChartServices.DrawChart(this.WebChartControl3, "成本", ViewType.Line, ServiceData.GetWeekMoneyAndCost(), "week", "cost");
ChartServices.SetAxisX(this.WebChartControl3, true, StringAlignment.Center, "星期", Color.Red, true, new Font("宋体", , FontStyle.Bold));
ChartServices.SetAxisY(this.WebChartControl3, true, StringAlignment.Center, "金额", Color.Red, true, new Font("宋体", , FontStyle.Bold));
} /// <summary>
/// 柱状图和折线图在同一图表中
/// </summary>
private void DrawBarAndLine()
{
ChartServices.SetChartTitle(this.WebChartControl2,true,"2012年12月第1周收入情况", true, , StringAlignment.Center, ChartTitleDockStyle.Top, true, new Font("宋体", , FontStyle.Bold), Color.Red, );
ChartServices.DrawChart(this.WebChartControl2, "收益", ViewType.Bar, ServiceData.GetWeekMoneyAndCost(), "week", "money");
ChartServices.DrawChart(this.WebChartControl2, "成本", ViewType.Bar, ServiceData.GetWeekMoneyAndCost(), "week", "cost");
ChartServices.SetAxisX(this.WebChartControl2, true, StringAlignment.Center, "星期", Color.Red, true, new Font("宋体", , FontStyle.Bold));
ChartServices.SetAxisY(this.WebChartControl2, true, StringAlignment.Center, "金额", Color.Red, true, new Font("宋体", , FontStyle.Bold)); ChartServices.SetChartTitle(this.WebChartControl2,false,"2012年12月第1周收入情况", true, , StringAlignment.Center, ChartTitleDockStyle.Top, true, new Font("宋体", , FontStyle.Bold), Color.Red, );
ChartServices.DrawChart(this.WebChartControl2, "收益", ViewType.Line, ServiceData.GetWeekMoneyAndCost(), "week", "money");
ChartServices.DrawChart(this.WebChartControl2, "成本", ViewType.Line, ServiceData.GetWeekMoneyAndCost(), "week", "cost");
ChartServices.SetAxisX(this.WebChartControl2, true, StringAlignment.Center, "星期", Color.Red, true, new Font("宋体", , FontStyle.Bold));
ChartServices.SetAxisY(this.WebChartControl2, true, StringAlignment.Center, "金额", Color.Red, true, new Font("宋体", , FontStyle.Bold));
} /// <summary>
/// 绘制饼图
/// </summary>
private void DrawPie()
{
ChartServices.SetChartTitle(this.WebChartControl4,true,"2012年12月第1周收入情况", true, , StringAlignment.Center, ChartTitleDockStyle.Top,true,new Font("宋体", , FontStyle.Bold), Color.Red, );
ChartServices.DrawChart(this.WebChartControl4, ServiceData.GetWeekMoneyAndCost().Rows[][].ToString(), ViewType.Pie, ServiceData.GetWeekMoneyAndCost(), "week", "money");
}
}
}
数据提供类ServiceData.cs，主要作用为图表控件提供数据源
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data; namespace DevDemo
{
public static class ServiceData
{
/// <summary>
/// 获取一周收入和支出数据
/// </summary>
/// <returns>Datatable数据集合(可从数据库读取以datatable形式返回，此处为演示方便直接构造)</returns>
public static DataTable GetWeekMoneyAndCost()
{
DataTable dt = new DataTable();
dt.Columns.Add("week", typeof(string));
dt.Columns.Add("money", typeof(decimal));
dt.Columns.Add("cost", typeof(decimal)); dt.Rows.Add("星期一", ,);
dt.Rows.Add("星期二", ,);
dt.Rows.Add("星期三", ,);
dt.Rows.Add("星期四", ,);
dt.Rows.Add("星期五", ,);
dt.Rows.Add("星期六", ,);
dt.Rows.Add("星期日", ,);
return dt;
}
}
}
图表控件辅助类ChartServices.cs，控制生成图表
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Drawing;
using DevExpress.XtraCharts;
using System.Data; namespace DevDemo
{
public static class ChartServices
{
/// <summary>
/// 绘制图形
/// </summary>
/// <param name="control">图表控件</param>
/// <param name="seriesName">系列名</param>
/// <param name="type">类型</param>
/// <param name="dt">数据源</param>
/// <param name="column1"></param>
/// <param name="column2"></param>
public static void DrawChart(DevExpress.XtraCharts.Web.WebChartControl control, string seriesName, ViewType type, DataTable dt, string column1, string column2)
{
Series series = new Series(seriesName, type);
DataTable table = dt;
SeriesPoint point=null;
for (int i = ; i < table.Rows.Count; i++)
{
point= new SeriesPoint(table.Rows[i][column1].ToString(), Convert.ToDouble(table.Rows[i][column2].ToString()));
series.Points.Add(point);
}
control.Series.Add(series);
//针对饼图的特殊处理
if(type==ViewType.Pie)
{
//设置显示方式(Argument:显示图例说明，ArgumentAndValues:显示图例内容和数据)
series.Label.PointOptions.PointView = PointView.ArgumentAndValues;
//设置数据显示形式(Percent:百分比,Currency:货币类型，数据前添加￥,Scientific:科学计数法)
series.Label.PointOptions.ValueNumericOptions.Format = NumericFormat.Percent;
//数据是否保留小数(0：不保留小数位，1保留一位小数，2保留两位小数)
series.Label.PointOptions.ValueNumericOptions.Precision = ; //数据以百分比显示时只能是Default和None
((PieSeriesLabel)series.Label).ResolveOverlappingMode =ResolveOverlappingMode.Default;
}
} /// <summary>
/// 设置图表标题
/// </summary>
/// <param name="control">图表控件</param>
/// /// <param name="isVisible">标题是否可见</param>
/// <param name="text">标题文本</param>
/// <param name="isWordWrop">是否换行</param>
/// <param name="maxLineCount">最大允许行数</param>
/// <param name="alignment">对齐方式</param>
/// <param name="dock">位置</param>
/// <param name="isAntialiasing">是否允许设置外观</param>
/// <param name="font">字体</param>
/// <param name="textColor">文本颜色</param>
/// <param name="indent">字体缩进值</param>
public static void SetChartTitle(DevExpress.XtraCharts.Web.WebChartControl control,bool isVisible,String text, bool isWordWrop, int maxLineCount, StringAlignment alignment, ChartTitleDockStyle dock, bool isAntialiasing, Font font, Color textColor, int indent)
{
//设置标题
ChartTitle title = new ChartTitle();
title.Visible = isVisible;
//显示文本
title.Text = text;
//是否允许换行
title.WordWrap = isWordWrop;
//最大允许行数
title.MaxLineCount = maxLineCount;
//对齐方式
title.Alignment = alignment;
//位置
title.Dock = dock;
//是否允许设置外观
title.Antialiasing = isAntialiasing;
//字体
title.Font = font;
//字体颜色
title.TextColor = textColor;
//缩进值
title.Indent = indent;
control.Titles.Add(title);
} /// <summary>
/// 为X轴添加标题
/// </summary>
/// <param name="control">图形控件</param>
/// <param name="isVisible">标题是否可见</param>
/// <param name="aligment">对齐方式</param>
/// <param name="text">标题显示文本</param>
/// <param name="color">标题字体颜色</param>
/// <param name="isAntialiasing">是否允许设置外观</param>
/// <param name="font">字体</param>
public static void SetAxisX(DevExpress.XtraCharts.Web.WebChartControl control, bool isVisible, StringAlignment aligment, string text, Color color, bool isAntialiasing, Font font)
{
XYDiagram xydiagram = (XYDiagram)control.Diagram;
xydiagram.AxisX.Title.Visible = isVisible;
xydiagram.AxisX.Title.Alignment = aligment;
xydiagram.AxisX.Title.Text = text;
xydiagram.AxisX.Title.TextColor = color;
xydiagram.AxisX.Title.Antialiasing = isAntialiasing;
xydiagram.AxisX.Title.Font = font;
} /// <summary>
/// 为X轴添加标题
/// </summary>
/// <param name="control">图形控件</param>
/// <param name="isVisible">标题是否可见</param>
/// <param name="aligment">对齐方式</param>
/// <param name="text">标题显示文本</param>
/// <param name="color">标题字体颜色</param>
/// <param name="isAntialiasing">是否允许设置外观</param>
/// <param name="font">字体</param>
public static void SetAxisY(DevExpress.XtraCharts.Web.WebChartControl control, bool isVisible, StringAlignment aligment, string text, Color color, bool isAntialiasing, Font font)
{
XYDiagram xydiagram = (XYDiagram)control.Diagram;
xydiagram.AxisY.Title.Visible = isVisible;
xydiagram.AxisY.Title.Alignment = aligment;
xydiagram.AxisY.Title.Text = text;
xydiagram.AxisY.Title.TextColor = color;
xydiagram.AxisY.Title.Antialiasing = isAntialiasing;
xydiagram.AxisY.Title.Font = font;
}
}
}
以上为本人的一点小小研究，如有不足之处，望不吝赐教！
转自：http://www.cnblogs.com/huabao-wei/archive/2012/12/17/DevWebChartControl.html
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