從localStorage的

Question

閱讀在JumpStart視頻（適用於Windows Phone 8的快速入門開發應用程序） 他們發現給我的錯誤示​​例代碼： 「異步方法的返回類型必須是void牛逼

的，任務或任務

這是示例代碼：

//open 
private async string loadStringAsync() 
{ 
    string theData = string.Empty; 

    //Get a reference to the local folder 
    StorageFolder localFolder = ApplicationData.Current.LocalFolder; 
    StorageFile storageFile = await localFolder.GetFileAsync("MyFile.store"); 

    //Open it and read it 
    Stream readStream = await storageFile.OpenStreamForReadAsync(); 
    using (StreamReader reader = new StreamReader(readStream)) 
    { 
    theData = await reader.ReadToEndAsync(); 
    } 
    return theData; 
} 

我想這需要一個簡單的修復，但由於我是新來的編程和評論是在那個特定的視頻停用了，我不知道如何..

Answer 1

var a = loadStringAsync(); 

private async Task<string> loadStringAsync() 
{ 
    string theData = string.Empty; 

    //Get a reference to the local folder 
    StorageFolder localFolder = ApplicationData.Current.LocalFolder; 
    StorageFile storageFile = await localFolder.GetFileAsync("MyFile.store"); 

    //Open it and read it 
    Stream readStream = await storageFile.OpenStreamForReadAsync(); 
    using (StreamReader reader = new StreamReader(readStream)) 
    { 
     theData = await reader.ReadToEndAsync(); 
    } 
    return theData; 
}