使用Windows Phone上的圖像拾取劑量不會等到在Windows Phone 8選擇的圖像

Question

我有從圖像庫中獲得的圖像，應該將其發送到服務器作爲基本字符串但是調用挑圖像是我轉移到當一個函數圖書館頁面，但不要等到我選擇繼續發送空的數據到服務器。

public void Chplaceimg(string PlaceID) 
{ 
    YOimage changeplaceimg = new YOimage(); 

    if (changeplaceimg.pickImage() != null) 
    { 
     var pairs = new List<KeyValuePair<string, string>> 
     { 
      new KeyValuePair<string, string> ("id", _id), 
      new KeyValuePair<string, string> ("image", changeplaceimg._base64Image), 
      new KeyValuePair<string, string> ("place", PlaceID) 
     }; 
     var serverData = serverConnection.connect("image.php", pairs); 
    } 
} 

public bool pickImage() 
{ 
    var photoChooserTask = new PhotoChooserTask(); 
    photoChooserTask.Completed += PhotoChooserTaskCompleted; 
    photoChooserTask.Show(); 
    return true; 
} 

//run function convertToBase64 when an image is choosed 
private void PhotoChooserTaskCompleted(object sender, PhotoResult e) 
{ 
    if (e.TaskResult == TaskResult.OK) 
    { 
     convertToBase64(e); 
    } 

} 

Answer 1

您必須撥打服務電話作爲PhotoChooserTaskCompleted回撥的一部分。

//run function convertToBase64 when an image is choosed 
private void PhotoChooserTaskCompleted(object sender, PhotoResult e) 
{ 
    if (e.TaskResult == TaskResult.OK) 
    { 
     // send data to server here 
     convertToBase64(e); 
    } 
}