使用文件选择器 Metro 应用程序 Windows 8 选择所有文件

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

你快到了..正确的语法是openPicker.FileTypeFilter.Add("*");

来自FileTypeFilter 文档：

File picker sample 演示了如何显示任何类型的文件 供用户选择的文件选择器。

示例代码在哪里：

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