我在c#web服务中创建了三个列表,它们是从xml输入填充的web方法。我想将这三个列表合并为一个实体(DataSet将是最好的,因为使用此Web服务的iOS应用程序已经被编程为接受和分析DataSet),并从Web方法返回它们。如何将列表合并到单个数据实体中#
这是目前我的代码看起来像:
[WebMethod]
public DataSet SelectObjects(string ExternalID, string Password)
{
DataSet ds = new DataSet();
MembershipAuthServiceReference.MembershipAuthenticationService objService = new MembershipAuthServiceReference.MembershipAuthenticationService();
MembershipAuthServiceReference.SoapHeaderCredentials objSoapHeader = new MembershipAuthServiceReference.SoapHeaderCredentials();
MembershipAuthServiceReference.MemberUserInfo objMemberInfo = new MembershipAuthServiceReference.MemberUserInfo();
try
{
objSoapHeader.UserName = ExternalID;
objSoapHeader.Password = Password;
objMemberInfo = objService.GetMembershipInfo();
List<Obj1> ListObj1 = new List<Obj1>();
for (int i = 0; i < objMemberInfo.Obj1.Length; i++)
{
Obj1 obj_Obj1 = new Obj1();
obj_Obj1.Stuff = objMemberInfo.Obj1[i].Stuff.ToString();
ListObj1.Add(obj_Obj1);
}
List<Obj2> ListObj2 = new List<Obj2>();
for (int i = 0; i < objMemberInfo.Obj2.Length; i++)
{
Obj2 obj_Obj2 = new Obj2();
obj_Obj2.Stuff = objMemberInfo.Obj2[i].Stuff.ToString();
ListObj2.Add(obj_Obj2);
}
List<Obj3> ListObj3 = new List<Obj3>();
for (int i = 0; i < objMemberInfo.Obj3.Length; i++)
{
Obj3 obj_Obj3 = new Obj3();
obj_Obj3.Stuff = objMemberInfo.Obj3[i].Stuff.ToString();
ListObj3.Add(obj_Obj3);
}
}
catch (Exception ex)
{
string sError;
sError = ex.Message.ToString();
}
return ds;
}
如何这些名单组合成一个数据集?我假设它有可能?如果没有,是否有一个可行的替代方案来做同样的事情?
可以使用Concat的方法将串联列表中 VAR combinedList = ListObj1.Concat (ListObj2).Concat(ListObj3); –