在windows store应用程序中等待时出现任务错误

嘿，我有一个方法:

    public static async Task<myClassl> GetData()
    {
        HttpClient client = new HttpClient();
        client.BaseAddress = new Uri("http:sasa.com");
        HttpResponseMessage response = await client.GetAsync("api/GetData");
        myClassl data = await response.Content.ReadAsAsync<myClassl>();
        return data ;
    }

当我写

myClassl  t = await DataGetter.GetData();

我有:'await'操作符只能在async方法中使用。考虑使用'async'修饰符标记此方法，并将其返回类型更改为'Task'。

// Add async to your calling method
private async Task SomeOtherMethod()
{
    myClassl t = await DataGetter.GetData();