水晶报表 ASP.NET 2.0中OWC生成柱状图和饼状图的源代码 [共享]
1、首先下载owc11：owc11
2、引用OWC：打开"解决方案资源管理器"面板，鼠标右键单击"引用"，选择"添加引用"菜单，在弹出的"添加引用"对话框中单击"COM"卡片，找到"Microsoft Office Web Components 10.0(office 2003是11.0)"，单击"选择"和"确定"按钮，OWC就被添加到了引用中。
3、建立一个pic.aspx文件，aspx代码如下：
<script language="javascript" type="text/javascript" src="/js/Calendar30.js"></script>
选择开始日期和结束日期。如果时间范围超过365则显示年表，如果时间范围超过30则显示月份表，如果超过1则显示日期表，否则显示小时表。<br />
开始日期：<input id="s" type="text" value="<%= Request.QueryString["s"]%>" onclick="fillDay(this)" >结束日期：<input id="e" value="<%= Request.QueryString["e"]%>" type="text" onclick="fillDay(this)" /><input type="button" value="查看" onclick="location.href='?s='+$F('s')+'&e='+$F('e')" /><br />
<asp:placeholder id="ChartHolder" runat="server"></asp:placeholder>
后台代码：
using System;using System.Data;using System.Configuration;using System.Collections;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 Microsoft.Office.Interop.Owc11;public partial class pic : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack && Request.QueryString["s"] != null && Request.QueryString["e"] != null) { string file; DateTime s = DateTime.Parse(Request.QueryString["s"]); DateTime et = DateTime.Parse(Request.QueryString["e"]); string x = ""; string y = ""; string danwei = "时"; string sql = ""; int r = ((TimeSpan)(et - s)).Days; //Response.Write(r); //Response.Write("<br />"); if (r >= 365) { sql = "select datepart(yyyy,regtime) d,count(*) c from t_user where regtime between '{0}' and '{1}' group by datepart(yyyy,regtime) order by d"; danwei = "年"; } else if (r >= 30) { sql = "select datepart(mm,regtime) d,count(*) c from t_user where regtime between '{0}' and '{1}' group by datepart(mm,regtime) order by d"; danwei = "月"; } else if (r >= 1) { sql = "select datepart(dd,regtime) d,count(*) c from t_user where regtime between '{0}' and '{1}' group by datepart(dd,regtime) order by d"; danwei = "日"; } else sql = "select datepart(HH,regtime) d,count(*) c from t_user where regtime between '{0}' and '{1}' group by datepart(HH,regtime) order by d"; DateTime s1 = new DateTime(s.Year, s.Month, s.Day); DateTime e1 = new DateTime(et.Year, et.Month, et.Day, 23, 59, 59); sql = string.Format(sql, s1.ToString(), e1.ToString()); //Response.Write(sql); //return; DataSet ds = DAL.dbHelper.ExecuteDataset(sql); if (ds != null && ds.Tables.Count > 0 && ds.Tables[0].Rows.Count > 0) { x = ds.Tables[0].Rows[0][0].ToString(); y = ds.Tables[0].Rows[0][1].ToString(); for (int i = 1; i < ds.Tables[0].Rows.Count; i++) { x += '\t' + ds.Tables[0].Rows[i][0].ToString(); y += '\t' + ds.Tables[0].Rows[i][1].ToString(); } //创建ChartSpace对象来放置图表 ChartSpace objCSpace = new ChartSpaceClass(); //在ChartSpace对象中添加图表，Add方法返回chart对象 ChChart objChart = objCSpace.Charts.Add(0); //指定图表的类型。类型由ChartChartTypeEnum枚举值得到 objChart.Type = ChartChartTypeEnum.chChartTypeColumnClustered; //指定图表是否需要图例 objChart.HasLegend = true; //给定标题 objChart.HasTitle = true; objChart.Title.Caption = "注册用户/日期分布图"; //给定x,y轴的图示说明 objChart.Axes[0].HasTitle = true; objChart.Axes[0].Title.Caption = "X ： 日期/单位： " + danwei; objChart.Axes[1].HasTitle = true; objChart.Axes[1].Title.Caption = "Y ： 数量"; //计算数据 /*categories 和 values 可以用tab分割的字符串来表示*/ //string strSeriesName = "图例 1"; //添加一个series objChart.SeriesCollection.Add(0); //给定series的名字 //objChart.SeriesCollection[0].SetData(ChartDimensionsEnum.chDimSeriesNames, +(int)ChartSpecialDataSourcesEnum.chDataLiteral, strSeriesName); //给定分类 objChart.SeriesCollection[0].SetData(ChartDimensionsEnum.chDimCategories, +(int)ChartSpecialDataSourcesEnum.chDataLiteral, x); //给定值 objChart.SeriesCollection[0].SetData (ChartDimensionsEnum.chDimValues, (int)ChartSpecialDataSourcesEnum.chDataLiteral, y); //输出成GIF文件. file = "/tmp/" + Guid.NewGuid().ToString() + ".gif"; objCSpace.ExportPicture(Server.MapPath("~" + file), "GIF", 800, 400); } else { file = "/images/0.gif"; } //把图片添加到placeholder. string strImageTag = "<IMG SRC='" + file + "'/>"; ChartHolder.Controls.Add(new LiteralControl(strImageTag)); } }}