/// <summary>
/// Define the report to use in Page_Init. The ReportViewer uses view state to persist its data, you should use Page_Init instead of Page_Load to specify
/// ReportViewer properties that are constant for the life of the page. Since Page_Load occurs after the view state is loaded, setting the report parameters,
/// for example, in Page_Load can cause the ReportViewer control to treat the specified data as newer than the one in the view state and re-process the report.
/// You can also avoid this in Page_Load by specifying ReportViewer data in an if(!IsPostBack){} block.
/// </summary>
protected void Page_Init(object sender, EventArgs e)
{
ReportViewer1.ProcessingMode = ProcessingMode.Remote;
// Get report path from configuration file
ReportViewer1.ServerReport.ReportServerUrl = new Uri(ConfigurationManager.AppSettings["ReportServerUrl"]);
ReportViewer1.ServerReport.ReportPath = String.Format("{0}/{1}{2}",
ConfigurationManager.AppSettings["SampleReportsPath"], // folder or site path
"Employee Sales Summary 2008", // report name
(ConfigurationManager.AppSettings["ReportServerMode"] == "SharePoint" ? ".rdl" : String.Empty)); // extension, depending on the report server mode
// (for information on the report path format,
// see http://msdn.microsoft.com/en-us/library/ms252075.aspx)
// Set export options for the report. In this example, since a static report is displayed, so the export options are always the same. The options should
// be repopulated if the report is dynamically changed in your page.
RenderingExtension[] extensions = ReportViewer1.ServerReport.ListRenderingExtensions();
foreach (RenderingExtension extension in extensions)
{
// Remove the non-visible rendering formats from the drop-down list.
if (extension.Visible)
{
DropDownListExport.Items.Add(new ListItem(extension.LocalizedName, extension.Name));
}
}
// Use the RegisterPostBackControl() method to register the custom toolbar items with the ReportViewer control,
// so that actions on these items can cause the wait control to be displayed.
ReportViewer1.RegisterPostBackControl(ButtonFirstPage);
ReportViewer1.RegisterPostBackControl(ButtonPreviousPage);
ReportViewer1.RegisterPostBackControl(TextBoxPageNumber);
ReportViewer1.RegisterPostBackControl(ButtonNextPage);
ReportViewer1.RegisterPostBackControl(ButtonLastPage);
ReportViewer1.RegisterPostBackControl(ButtonBackToParent);
ReportViewer1.RegisterPostBackControl(TextBoxFindString);
ReportViewer1.RegisterPostBackControl(ButtonFind);
ReportViewer1.RegisterPostBackControl(ButtonNext);
ReportViewer1.RegisterPostBackControl(ButtonRefresh);
}
