彩票走势图

注意：这个特性不受网络客户端配置文件框架的支持。如果要使它可以在终端用户的机器上使用，就必须安装完整的.NET框架。要了解更多信息，请参见Windows Forms Deployment部署文件的.NET框架4.0户端配置文件部分的重要注释。（DevExpress报表控件XtraReports下载)

这个例子演示了一个Report Definition报表定义怎样被保存到一个会话对象，并从中恢复。

XtraReport.SaveLayout和XtraReport.FromStream方法用于在流中保存报表，并从流中加载。对于一般的信息,请参考Storing Report Definitions。

//documentation.devexpress.com/#XtraReports/CustomDocument2592。
C#
using System.IO;
using DevExpress.XtraReports.UI;
// ...

private void StoreReport(XtraReport report) {
// Create a stream.
MemoryStream stream = new MemoryStream();

// Save a report to the stream.
report.SaveLayout(stream);

// Save the stream to a session.
Session["report_stream"] = stream;
}

private XtraReport RestoreReport() {
// Restore the stream from the session.
MemoryStream stream = (MemoryStream)Session["report_stream"];

// Create a report from the stream.
return XtraReport.FromStream(stream, true);
}
VB
Imports System.IO
Imports DevExpress.XtraReports.UI
' ...

Private Sub StoreReport(report As XtraReport)
' Create a stream.
Dim stream As New MemoryStream()

' Save a report to the stream.
report.SaveLayout(stream)

' Save the stream to a session.
Session("report_stream") = stream
End Sub

Private Function RestoreReport() As XtraReport
' Restore the stream from the session.
Dim stream As MemoryStream = CType(Session("report_stream"), MemoryStream)

' Create a report from the stream.
Return XtraReport.FromStream(stream, True)
End Function