精确的音频复制工作方式在Windows XP。标准文件打开对话框显示，但文件名字段包含文本“filename将被忽略”。

这里只是猜测，但我怀疑每当对对话框进行重大更改时，字符串都会注入到组合框编辑控件中。只要该字段不为空，并且对话框标志设置为不检查文件的存在，对话框就可以正常关闭。

编辑:这比我想象的要简单得多。下面是c++ /MFC中的代码，您可以将其转换到您选择的环境中。

CFileDialog dlg(true, NULL, "Filename will be ignored", OFN_HIDEREADONLY | OFN_NOVALIDATE | OFN_PATHMUSTEXIST | OFN_READONLY, NULL, this);
dlg.DoModal();

编辑2:这应该是翻译到c#，但我不是很流利的c#，所以如果它不工作，不要对我开枪。

OpenFileDialog openFileDialog1 = new OpenFileDialog();

openFileDialog1.FileName = "Filename will be ignored";
openFileDialog1.CheckPathExists = true;
openFileDialog1.ShowReadOnly = false;
openFileDialog1.ReadOnlyChecked = true;
openFileDialog1.CheckFileExists = false;
openFileDialog1.ValidateNames = false;

if(openFileDialog1.ShowDialog() == DialogResult.OK)
{
    // openFileDialog1.FileName should contain the folder and a dummy filename
}

Edit 3: Finally looked at the actual dialog in question, in Visual Studio 2005 (I didn't have access to it earlier). It is not the standard file open dialog! If you inspect the windows in Spy++ and compare them to a standard file open, you'll see that the structure and class names don't match. When you look closely, you can also spot some differences between the contents of the dialogs. My conclusion is that Microsoft completely replaced the standard dialog in Visual Studio to give it this capability. My solution or something similar will be as close as you can get, unless you're willing to code your own from scratch.

我猜你用的是Vista的VS2008?在这种情况下，我认为FOS_PICKFOLDERS选项在调用Vista文件对话框IFileDialog时被使用。我担心在。net代码中，这将涉及大量粗糙的P/Invoke互操作代码。

最好使用FolderBrowserDialog。

using (FolderBrowserDialog dlg = new FolderBrowserDialog())
{
    dlg.Description = "Select a folder";
    if (dlg.ShowDialog() == DialogResult.OK)
    {
        MessageBox.Show("You selected: " + dlg.SelectedPath);
    }
}

您可以使用这样的代码

过滤器为空字符串。 文件名为AnyName，但不为空

        openFileDialog.FileName = "AnyFile";
        openFileDialog.Filter = string.Empty;
        openFileDialog.CheckFileExists = false;
        openFileDialog.CheckPathExists = false;

试试下面这个来自Codeproject(归功于Nitron):

我认为这是相同的对话框，如果你添加一个截图可能会有所帮助?

bool GetFolder(std::string& folderpath, const char* szCaption=NULL, HWND hOwner=NULL)
{
    bool retVal = false;

    // The BROWSEINFO struct tells the shell how it should display the dialog.
    BROWSEINFO bi;
    memset(&bi, 0, sizeof(bi));

    bi.ulFlags   = BIF_USENEWUI;
    bi.hwndOwner = hOwner;
    bi.lpszTitle = szCaption;

    // must call this if using BIF_USENEWUI
    ::OleInitialize(NULL);

    // Show the dialog and get the itemIDList for the selected folder.
    LPITEMIDLIST pIDL = ::SHBrowseForFolder(&bi);

    if(pIDL != NULL)
    {
        // Create a buffer to store the path, then get the path.
        char buffer[_MAX_PATH] = {'\0'};
        if(::SHGetPathFromIDList(pIDL, buffer) != 0)
        {
            // Set the string value.
            folderpath = buffer;
            retVal = true;
        }       

        // free the item id list
        CoTaskMemFree(pIDL);
    }

    ::OleUninitialize();

    return retVal;
}

有Windows API代码包。它有很多与shell相关的东西，包括CommonOpenFileDialog类(在microsoft . windowsapicodepack . dialogues命名空间中)。这是一个完美的解决方案-通常只显示文件夹的打开对话框。

下面是一个如何使用它的例子:

CommonOpenFileDialog cofd = new CommonOpenFileDialog();
cofd.IsFolderPicker = true;
cofd.ShowDialog();

不幸的是，微软不再发布这个软件包，但一些人已经非正式地将二进制文件上传到NuGet。这里可以找到一个例子。这个包只是特定于shell的东西。如果您需要它，同一用户还有几个其他的包，这些包在原始包中提供了更多的功能。