[UWP]选择要覆盖UWP应用程序中文本的文件 [英] [UWP]Selecting a file to overwrite text in UWP app

问题描述

更新： 这可以在桌面上运行时按预期工作，但不能在手机上运行。 所以问题与移动有关。

Update:  This works as expected while running on desktop, but not on phone.  So the question is related to mobile.

如何在UWP应用中选择要覆盖的现有文件？我尝试使用以下代码行，但它显示为2个屏幕。

How do you select an existing file to overwrite in a UWP app? I try using the following lines of code, but it appears to be 2 screens that are shown.

FileSavePicker fileSavePicker = new FileSavePicker();
StorageFile storageFile = await fileSavePicker.PickSaveFileAsync();

它将打开UI以允许我导航文件夹，但即使我选择现有文件，我必须按"下一步"按钮。 第二个用户界面将打开"输入文件名称"。 如果我输入的文件名不存在，则会创建，
将返回新文件。 如果文件名已经存在，则提示将询问我是否要覆盖。

It will open the UI to allow me to navigate folders, but even if I select an existing file, I have to press the Next button.  A second UI will open to "Enter File Name".  If I enter a file name that does not exist, it will create and return the new file.  If the file name already exist, a prompt will ask if I want to overwrite.

所以我的问题是，如何选择现有文件并返回而不必输入文件名第二个UI？ 另请注意，我希望能够在此方案中选择现有文件或创建新文件。 这与在WinForms中使用SaveFileDialog类似
。

So my question is, how do you select an existing file and return without having to enter the file name in second UI?  Also note that I want the ability to either select an existing file or create a new file in this scenario.  This would similar to using a SaveFileDialog in WinForms.

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推荐答案

你好shaggygi，

Hi shaggygi,

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我已在手机和桌面测试了您的代码，我可以重现您的问题在我身边，我建议您在此UserVoice论坛上提交有关此要求的反馈和建议，（ https://wpdev.uservoice.com/）
给微软。 

I have tested your code in the phone and desktop, I can reproduce your issue in my side, I will recommend you submit your feedback and suggestion about this requirement on this UserVoice forum (https://wpdev.uservoice.com/) to Microsoft. 

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