c# - 使用文件选择器 Metro 应用程序选择所有文件 Windows 8

Question

FileOpenPicker openPicker = new FileOpenPicker();
openPicker.ViewMode = PickerViewMode.Thumbnail;
openPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
openPicker.FileTypeFilter.Add(".jpg");
openPicker.FileTypeFilter.Add(".jpeg");
openPicker.FileTypeFilter.Add(".png");

StorageFile file = await openPicker.PickSingleFileAsync();
if (file != null)
{
    // Application now has read/write access to the picked file
    OutputTextBlock.Text = "Picked photo: " + file.Name;
}
else
{
    OutputTextBlock.Text = "Operation cancelled.";
}

如何添加 openPicker.FileTypeFilter.Add(".*"); 表示在文件选择器中显示所有文件类型？

Answer 1

您快完成了。正确的语法是 openPicker.FileTypeFilter.Add("*");

来自FileTypeFilter文档:

The File picker sample demonstrates how to show files of any type in the file picker for the user to pick from.

示例中的代码:

FileOpenPicker openPicker = new FileOpenPicker();
openPicker.ViewMode = PickerViewMode.List;
openPicker.SuggestedStartLocation = PickerLocationId.DocumentsLibrary;
openPicker.FileTypeFilter.Add("*");