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(304)
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