private void img_Avatar_Loaded(object sender, RoutedEventArgs e)
{
int id = (int)(this.Tag);
if (!wb_Dic.Keys.Contains(id))
{
dic_image.Add(id, (Image)sender);
client.GetImageByAcquirerIdAsync(id);
}
else
{
dic_image[id].Source = wb_Dic[id];
}
}