[英]Getting returned list from web service
我编写了一个相当简单的Web服务,将SQL查询的结果集放入列表中。 我在使用Web服务的项目中调用带有结果集的列表时遇到麻烦。 我将代码放在下面:
网络服务
[OperationContract]
List<ViewDetails> ViewDetails();
[DataContract]
public class ViewDetails
{
public string TitleView { get; set; }
public string BodyView { get; set; }
public string AuthorView { get; set; }
public ViewDetails() { }
public ViewDetails(string myTitleView, string myBodyView, string myAuthorView)
{
this.TitleView = myTitleView;
this.BodyView = myBodyView;
this.AuthorView = myAuthorView;
}
}
public List<ViewDetails> ViewDetails()
{
List<ViewDetails> details = new List<ViewDetails>();
SqlConnection conn = new SqlConnection(strConnString);
conn.Open();
SqlCommand cmd = new SqlCommand("SELECT TOP 2 [My_Title] AS 'Title', [My_Body] AS 'Body', [My_Author] AS 'Author' FROM [My_table] ORDER BY [Date] DESC", conn);
SqlDataReader rdrDetails = cmd.ExecuteReader();
try
{
while (rdrDetails.Read())
{
details.Add(new ViewDetails(rdrDetails.GetSqlString(rdrDetails.GetOrdinal("Title")).ToString(), rdrDetails.GetSqlString(rdrDetails.GetOrdinal("Body")).ToString(), rdrDetails.GetSqlString(rdrDetails.GetOrdinal("Author")).ToString()));
}
}
catch (Exception e)
{
//exception
}
finally
{
conn.Close();
}
return details;
}
我正在使用Web服务的项目
public async void ViewData()
{
ServiceReference1.Service1Client client = new ServiceReference1.Service1Client();
string title = string.Empty;
string body = string.Empty;
string author = string.Empty;
var res = await client.ViewDetailsAsync();
}
我希望能够在ViewData
类中执行类似的操作,以便将结果存储在变量中并将其分配给textblocks
等。
title = res.TitleView;
但这不允许我...。有人看到我想念的东西吗?
注意 :这是一个通用Windows应用程序
您缺少res
是List<ViewDetails>
。 res
不是ViewDetails
的实例。 因此,您应该输入title = res[0].TitleView;
您在ViewDetails
数据合同属性中缺少DataMember
属性。
[DataContract]
public class ViewDetails
{
[DataMember]
public string TitleView { get; set; }
[DataMember]
public string BodyView { get; set; }
[DataMember]
public string AuthorView { get; set; }
public ViewDetails() { }
public ViewDetails(string myTitleView, string myBodyView, string myAuthorView)
{
this.TitleView = myTitleView;
this.BodyView = myBodyView;
this.AuthorView = myAuthorView;
}
}
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