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我现在正在做 Autodesk Navisworks 的二次开发。xaml 看起来像这样：

<Window x:Class="SCA.EmergencySystem.Gui.MainFrame.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:wf="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"
        xmlns:nc="clr-namespace:SCA.EmergencySystem.NavisInterface.NavisControl;assembly=SCA.EmergencySystem.NavisInterface.NavisControl"
        Height="577.33" Width="879.502" Closed="on_Window_Closed" ShowInTaskbar="False" Title="EmergencySystem">
    <DockPanel>
        <WindowsFormsHost>
            <nc:NavisViewControl x:Uid="viewControl" x:Name="viewControl" Dock="Fill"/>
    </WindowsFormsHost>
    </DockPanel>
</Window>

似乎视觉工作室成功地识别了这一行：

xmlns:nc="clr-命名空间:SCA.EmergencySystem.NavisInterface.NavisControl;assembly=SCA.EmergencySystem.NavisInterface.NavisControl"

所以我认为命名空间和程序集都可以

但是，XAML 未能找到已在加载到 WPF 项目的 NavisControl.DLL 中定义的控件的名称。NavisViewControl那是我开发的System.Windows.Forms.Control， Autodesk.Navisworks.Api.Controls也是我开发的。nc:NavisViewControl不被识别。

NavisViewControl 的代码很简单：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Autodesk.Navisworks.Api.Controls;

namespace SCA.EmergencySystem.NavisInterface.NavisControl
{
    public class NavisViewControl : ViewControl
    {
    }
}
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