C# WPF ReportDocument类型中的报表查看器不工作

我试图在VS2017的WPF应用程序中显示报告文件。CS1代码工作完美，需要连接数据。在CS2中，我想通过ReportDocument来实现这一点，但我只有灰色背景的等待轮，并且查看器不要求连接数据。知道怎么做吗？我需要用CS2方法来做

CS1：

CS2：

我的XAML：

<UserControl
x:Class="ReportingPortal.Views.ReportingPortalFilterView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:behaviors="clr-namespace:UCM.Infrastructure.Behaviors;assembly=UCM.Infrastructure"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:cr="clr-namespace:SAPBusinessObjects.WPF.Viewer;assembly=SAPBusinessObjects.WPF.Viewer"
xmlns:lex="http://wpflocalizeextension.codeplex.com"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:prism="http://prismlibrary.com/"
lex:LocalizeDictionary.DesignCulture="de"
lex:ResxLocalizationProvider.DefaultAssembly="ReportingPortal"
lex:ResxLocalizationProvider.DefaultDictionary="Resources"
prism:ViewModelLocator.AutoWireViewModel="True"
KeyboardNavigation.TabNavigation="Cycle"
mc:Ignorable="d">
<Grid Background="{DynamicResource LightLightBaseColorBrush}">

    <cr:CrystalReportsViewer
        x:Name="cryrep"
        Width="1000"
        Height="1600"
        Margin="-14,0,0,0"
        HorizontalAlignment="Left"
        VerticalAlignment="Top" />

</Grid>

---

我必须安装CrforVS运行时，现在它工作得非常完美

CrystalDecisions.CrystalReports.Engine.ReportDocument crReportDocument = new CrystalDecisions.CrystalReports.Engine.ReportDocument();
crReportDocument.Load("C:\\Reports\\GeneralBusiness\\testDB.rpt", CrystalDecisions.Shared.OpenReportMethod.OpenReportByTempCopy);

cryrep.ViewerCore.ReportSource = crReportDocument;
cryrep.ViewerCore.RefreshReport();

<UserControl
x:Class="ReportingPortal.Views.ReportingPortalFilterView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:behaviors="clr-namespace:UCM.Infrastructure.Behaviors;assembly=UCM.Infrastructure"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:cr="clr-namespace:SAPBusinessObjects.WPF.Viewer;assembly=SAPBusinessObjects.WPF.Viewer"
xmlns:lex="http://wpflocalizeextension.codeplex.com"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:prism="http://prismlibrary.com/"
lex:LocalizeDictionary.DesignCulture="de"
lex:ResxLocalizationProvider.DefaultAssembly="ReportingPortal"
lex:ResxLocalizationProvider.DefaultDictionary="Resources"
prism:ViewModelLocator.AutoWireViewModel="True"
KeyboardNavigation.TabNavigation="Cycle"
mc:Ignorable="d">
<Grid Background="{DynamicResource LightLightBaseColorBrush}">

    <cr:CrystalReportsViewer
        x:Name="cryrep"
        Width="1000"
        Height="1600"
        Margin="-14,0,0,0"
        HorizontalAlignment="Left"
        VerticalAlignment="Top" />

</Grid>