如何使用 WPF 应用程序中的 FolderBrowserDialog [英] How to use a FolderBrowserDialog from a WPF application

问题描述

我正在尝试使用我的 WPF 应用程序中的 FolderBrowserDialog - 没什么特别的.我不太关心它是否具有 Windows 窗体外观.

I'm trying to use the FolderBrowserDialog from my WPF application - nothing fancy. I don't much care that it has the Windows Forms look to it.

然而，当我调用 ShowDialog 时，我想传递一个 IWin32Window 的所有者窗口.如何从我的 WPF 控件中获取此信息?

However, when I call ShowDialog, I want to pass the owner window which is an IWin32Window. How do I get this from my WPF control?

其实，重要吗?如果我运行此代码并使用不带参数的 ShowDialog 重载，则它可以正常工作.什么情况下需要通过所有者窗口?

Actually, does it matter? If I run this code and use the ShowDialog overload with no parameters it works fine. Under what circumstances do I need to pass the owner window?

谢谢，

克雷格

推荐答案

这是我的最终版本.

public static class MyWpfExtensions
{
    public static System.Windows.Forms.IWin32Window GetIWin32Window(this System.Windows.Media.Visual visual)
    {
        var source = System.Windows.PresentationSource.FromVisual(visual) as System.Windows.Interop.HwndSource;
        System.Windows.Forms.IWin32Window win = new OldWindow(source.Handle);
        return win;
    }

    private class OldWindow : System.Windows.Forms.IWin32Window
    {
        private readonly System.IntPtr _handle;
        public OldWindow(System.IntPtr handle)
        {
            _handle = handle;
        }

        #region IWin32Window Members
        System.IntPtr System.Windows.Forms.IWin32Window.Handle
        {
            get { return _handle; }
        }
        #endregion
    }
}

并实际使用它:

var dlg = new FolderBrowserDialog();
System.Windows.Forms.DialogResult result = dlg.ShowDialog(this.GetIWin32Window());

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