How to check if file exists in StorageFolder in WinRT [duplicate]

问题:

Possible Duplicate:
Check if a file exists in the project in WinRT

I'm using the StorageFolder and need to check if a file exists befor I read it to avoid a exception.

my code looks like this:

StorageFolder storageFolder = ApplicationData.Current.LocalFolder; StorageFile sampleFile = await storageFolder.GetFileAsync(myPath); 

the problem is, I can't find a method which checks if a file exist

回答1:

Last time I checked you had to catch an exception: (might have changed)

Edit: this is one way to do it :)

Like so:

    static async Task<bool> DoesFileExistAsync(string fileName)     {         try         {             await ApplicationData.Current.LocalFolder.GetFileAsync(fileName);             return true;         }         catch         {             return false;         }     } 

文章来源: How to check if file exists in StorageFolder in WinRT [duplicate]