. net IQueryable:期望的类、委托、枚举、接口错误

我是。net和windows azure的新手，并试图遵循本教程:http://msdn.microsoft.com/en-us/wazplatformtrainingcourse_introtowindowsazurelabvs2010_topic2.aspx

当我尝试如下声明IQueryable属性时:

public IQueryable<C1_Schema> C1_Schema
  {
    get
    {
      return this.CreateQuery<C1_Schema>("C1_Schema");
    }
  }

I得到一个错误:错误期望类，委托，枚举，接口，结构

这是我声明属性

的类

public IQueryable<C1_Schema> C1_Schema
  {
    get
    {
      return this.CreateQuery<C1_Schema>("C1_Schema");
    }
  }
    public class context : Microsoft.WindowsAzure.StorageClient.TableServiceContext
    {
        public context(string baseAddress, Microsoft.WindowsAzure.StorageCredentials     credentials)
      : base(baseAddress, credentials)
         { }
    }

C1_Schema类:

public class C1_Schema : Microsoft.WindowsAzure.StorageClient.TableServiceEntity
{
    public String fname { get; set; }
    public String lname { get; set; }
    public double salary { get; set;}

    public C1_Schema()
    {
        PartitionKey = DateTime.UtcNow.ToString("MMddyyyy");
        // Row key allows sorting, so we make sure the rows come back in time order.
        RowKey = string.Format("{0:10}_{1}", DateTime.MaxValue.Ticks - DateTime.Now.Ticks, Guid.NewGuid());
    }
}

感谢你的帮助。

public class context : Microsoft.WindowsAzure.StorageClient.TableServiceContext
{
  public IQueryable<C1_Schema> C1_Schema
  {
    get
    {
      return this.CreateQuery<C1_Schema>("C1_Schema");
    }
  }
}