将WindowsFormsHost控件添加到MainWindow导致exe崩溃 [英] adding WindowsFormsHost control to MainWindow causes to crash the exe
问题描述
我正在通过FsXaml在F#中使用WPF.MainWindow一直有效,直到我添加WindowsFormsHost控件为止,这时执行时它将崩溃并显示以下错误:
I'm using WPF in F# via FsXaml. The MainWindow works, until I add a WindowsFormsHost control, at which point it will crash with the following error when executed:
Unhandled Exception: System.Xaml.XamlObjectWriterException: Cannot create unknown type '{http://schemas.microsoft.com/winfx/2006/xaml/presentation}WindowsFormsHost'.
at System.Xaml.XamlObjectWriter.WriteStartObject(XamlType xamlType)
at System.Xaml.XamlWriter.WriteNode(XamlReader reader)
at FsXaml.InjectXaml.from$cont@37(String file, Object root, Stream resStream, Unit unitVar)
at FsXaml.InjectXaml.from(String file, Object root)
at Program.Win.InitializeComponent()
at Program.Win..ctor()
我需要添加xaml或应用程序来识别winformshost吗?C#生成的xaml可在C#应用程序中使用.如果其中没有winformshost,则F#应用程序可以工作.C#和F#xamls之间的区别是x-local名称空间引用.
Is there anything I need to add the xaml or the app to recognize the winformshost? The C# generated xaml works in a C# app. The F# app works if there is no winformshost inside it. The difference between the C# and F# xamls is the x-local namespace reference.
MainWindow.xaml:
The MainWindow.xaml:
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<Grid>
<Button x:Name="button" Content="Button" HorizontalAlignment="Left" Height="124" VerticalAlignment="Top" Width="217"/>
<WindowsFormsHost HorizontalAlignment="Left" Height="123" Margin="49,171,0,0" VerticalAlignment="Top" Width="394"/>
</Grid>
</Window>
App.xaml
<Application
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
StartupUri="MainWindow.xaml">
<Application.Resources>
</Application.Resources>
</Application>
Program.fs:
Program.fs:
open System
open System.Windows
open FsXaml
open Microsoft.FSharp.Control
open System.Windows.Forms
open System.Windows.Forms.Integration
open FSharp.Charting
open FSharp.Charting.ChartTypes
type App = XAML<"App.xaml">
type Win = XAML<"MainWindow.xaml">
[<STAThread>]
[<EntryPoint>]
let main _ =
let app = App()
let win = Win()
win.button.Content <- "Click!"
win.button.MouseRightButtonDown.Add (fun _ -> MessageBox.Show("OK") |> ignore)
app.Run win |> ignore
0
推荐答案
尝试显式添加名称空间(使用 clr-namespace
),就像使用winforms控件本身一样-只需使用 System.Windows.Forms.Integration
.我假设默认XAML命名空间中不包含该代码:)
Try explicitly adding the namespace (using clr-namespace
), the same way you would for the winforms controls themselves - just use System.Windows.Forms.Integration
. I assume that isn't included in the default XAML namespace :)
xmlns:wfi="clr-namespace:System.Windows.Forms;assembly=WindowsFormsIntegration"
这篇关于将WindowsFormsHost控件添加到MainWindow导致exe崩溃的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!