本示例演示如何访问用于在ASP.NET XAF应用程序中显示报告的ASPxDocumentViewer和ASPxWebDocumentViewer控件。
在本主题中，假定您有一个使用Reports V2 Module的XAF应用程序，并且已经创建了一个或多个报告（请参阅Reports V2 Module Overview）。
当用户在ASP.NET XAF应用程序中预览报表时，将在弹出窗口或主窗口中显示“详细信息视图”（取决于ReportsAspNetModuleV2.DesignAndPreviewDisplayMode值）。此详细信息视图包含一个视图项，该视图项创建了一个用于显示报告的Web控件。特定的视图项和控件类型取决于ReportsAspNetModuleV2.ReportViewerType属性值（HTML5或ASP）。
要访问该视图项，请实现一个针对ReportViewer_DetailView_V2详细视图的控制器（此详细视图标识符是通过ReportsAspNetModuleV2.ReportViewDetailViewWebName常量指定的）。将View Item类型作为CompositeView.GetItems <T>方法的通用参数传递。返回列表的第一个元素将是必需的View Item，因为View中只有一个报表查看器项目。然后，您可以处理View Item的ViewItem.ControlCreated事件，并使用ReportViewer属性访问ASPxDocumentViewer或ASPxWebDocumentViewer控件。
ASPxWebDocumentViewer的示例（ReportViewerType为HTML5）
using DevExpress.ExpressApp;
using DevExpress.ExpressApp.ReportsV2.Web;
public class CustomizeReportViewerController : ViewController<DetailView> {
public CustomizeReportViewerController() {
TargetViewId = ReportsAspNetModuleV2.ReportViewDetailViewWebName;
}
protected override void OnActivated() {
base.OnActivated();
ReportWebViewerDetailItem reportViewItem =
((DetailView)View).GetItems<ReportWebViewerDetailItem>()[0] as ReportWebViewerDetailItem;
reportViewItem.ControlCreated = delegate(object sender, EventArgs e) {
reportViewItem.ReportViewer.ClientSideEvents.Init =
"function(s, e) { s.previewModel.reportPreview.zoom(0.7); }";
};
}
}
Imports DevExpress.ExpressApp
Imports DevExpress.ExpressApp.ReportsV2.Web
Public Class CustomizeReportViewerController
Inherits ViewController(Of DetailView)
Public Sub New()
TargetViewId = ReportsAspNetModuleV2.ReportViewDetailViewWebName
End Sub
Protected Overrides Sub OnActivated()
MyBase.OnActivated()
Dim reportViewItem As ReportWebViewerDetailItem = _
TryCast(CType(View, DetailView).GetItems(Of ReportWebViewerDetailItem)()(0), ReportWebViewerDetailItem)
AddHandler reportViewItem.ControlCreated, Sub(sender As Object, e As EventArgs) _
reportViewItem.ReportViewer.ClientSideEvents.Init = "function(s, e) { s.previewModel.reportPreview.zoom(0.7); }"
End Sub
End Class
ASPxDocumentViewer的示例（ReportViewerType为ASP）
using DevExpress.ExpressApp;
using DevExpress.ExpressApp.ReportsV2.Web;
public class CustomizeReportViewerController : ViewController<DetailView> {
public CustomizeReportViewerController() {
TargetViewId = ReportsAspNetModuleV2.ReportViewDetailViewWebName;
}
protected override void OnActivated() {
base.OnActivated();
ReportViewerDetailItem reportViewItem =
((DetailView)View).GetItems<ReportViewerDetailItem>()[0] as ReportViewerDetailItem;
reportViewItem.ControlCreated = delegate(object sender, EventArgs e) {
reportViewItem.ReportViewer.SettingsReportViewer.PageByPage = false;
};
}
}
Imports DevExpress.ExpressApp
Imports DevExpress.ExpressApp.ReportsV2.Web
Public Class CustomizeReportViewerController
Inherits ViewController(Of DetailView)
Public Sub New()
TargetViewId = ReportsAspNetModuleV2.ReportViewDetailViewWebName
End Sub
Protected Overrides Sub OnActivated()
MyBase.OnActivated()
Dim reportViewItem As ReportViewerDetailItem = TryCast(CType(View, DetailView).GetItems(Of ReportViewerDetailItem)()(0), ReportViewerDetailItem)
AddHandler reportViewItem.ControlCreated, Sub(sender As Object, e As EventArgs) reportViewItem.ReportViewer.SettingsReportViewer.PageByPage = False
End Sub
End Class
重点
编译这些示例时，需要引用DevExpress.XtraReports.v 19.2 .Web.dll程序集。
