public MemoryStream GenerateRdlc()
{
 XmlDocument sourceDoc = new XmlDocument();
 string path = AppDomain.CurrentDomain.BaseDirectory + "Test/OrderList.rdlc";
 sourceDoc.Load(path);
 Hashtable reportColumns = GetReportColumns(sourceDoc.LastChild);
 //just remove
 for (int i = 0; i < reportColumns.Count; i++)
 {
  if (!FindReportCoulmns(reportColumns[i].ToString()))
  {
   RemoveColumnFromRdlc(sourceDoc.LastChild, i);
  }
 }

 MemoryStream ms = new MemoryStream();
 XmlSerializer serializer = new XmlSerializer(typeof(XmlDocument));
 serializer.Serialize(ms, sourceDoc);
 ms.Position = 0;
 return ms;
}
  至于如何GetReportColumns和RemoveColumnFromRdlc,那就很简单了,就是一个操作xml对象的过程。比方说:
private Hashtable GetReportColumns(XmlNode root)
{
 Hashtable cols = new Hashtable();
 //XmlNamespaceManager s=new XmlNamespaceManager(
  XmlNode cells = FindChildNode(root,"Body/ReportItems/Table/Header/TableRows/TableRow/TableCells");
 for (int i = 0; i < cells.ChildNodes.Count; i++)
 {
  XmlNode cell =FindChildNode( cells.ChildNodes[i],"ReportItems/Textbox/DataElementName");
  cols[i] = cell.InnerText;
 }
 return cols;
}
  这是使用这一段的代码:
this.ReportViewer1.LocalReport.LoadReportDefinition(this.Report.GenerateRdlc());
this.ReportViewer1.LocalReport.DataSources.Add(new ReportDataSource("DataSet1", result.Tables[0]));
this.ReportViewer1.LocalReport.Refresh();
  这个方法终于成功了。

  附:rdlc文件的xml一段结构

  xml结构
1<?xml version="1.0" encoding="utf-8"?>
2<Report xmlns="http://schemas.microsoft.com/sqlserver/reporting/2005/01/reportdefinition" xmlns:rd="http://schemas.microsoft.com/SQLServer/reporting/reportdesigner">
3 <DataSources>
4 <DataSource Name="ConnectionString">
5 <ConnectionProperties>
6 <ConnectString />
7 <DataProvider>SQL</DataProvider>
8 </ConnectionProperties>
9 <rd:DataSourceID>073016a7-6cb0-4e06-a6fd-f5882a039188</rd:DataSourceID>
10 </DataSource>
11 </DataSources>
12 <BottomMargin>2.5cm</BottomMargin>
13 <RightMargin>2.5cm</RightMargin>
14 <PageWidth>21cm</PageWidth>
15 <rd:DrawGrid>true</rd:DrawGrid>
16 <InteractiveWidth>21cm</InteractiveWidth>
17 <rd:GridSpacing>0.25cm</rd:GridSpacing>
18 <rd:SnapToGrid>true</rd:SnapToGrid>
19 <Body>
20 <ColumnSpacing>1cm</ColumnSpacing>
21 <ReportItems>
22 <Chart Name="chart1">

文章来源:http://www.cnblogs.com/wangdetian168/archive/2008/09/03/1283351.html
posted on 2010-09-29 13:28 sanmao 阅读(249) 评论(0)  编辑  收藏

只有注册用户登录后才能发表评论。


网站导航:
 

常用链接

留言簿(5)

随笔分类

随笔档案

搜索

  •  

最新评论

阅读排行榜

评论排行榜