我有一个雇员类
public class Employee
{
public int ID { get; set; }
public string Name { get; set; }
public string Age { get; set; }
public string Address { get; set; }
public string ContactNo { get; set; }
}
并且具有填充方法以填充列表
private static void FillEmployeeList(ref List<Employee> lt1, ref List<Employee> lt2)
{
lt1 = new List<Employee> {new Employee{ID=1,Name="Kavya",Age="24",Address="No.1,Nehru Street,Chennai",ContactNo="9874521456"},
new Employee{ID=2,Name="Ravi",Age="24",Address="Flat No.25/A1,Gandhi Street,Chennai",ContactNo="9658745258"},
new Employee{ID=3,Name="Lavnya",Age="30",Address="No.12,Shastri nagar,Chennai",ContactNo="5214587896"},
new Employee{ID=4,Name="Rupa",Age="31",Address="No.23/5,Nehru Street,Chennai",ContactNo="9874521256"},
new Employee{ID=5,Name="Divya",Age="32",Address="No.1/227,Nehru Street,Chennai",ContactNo="8541256387"},
};
lt2 = new List<Employee> {new Employee{ID=1,Name="Kavya",Age="24",Address="No.1,Nehru Street,Chennai",ContactNo="9874521456"},
new Employee{ID=2,Name="Ravindran",Age="30",Address="Flat No.25/A1,Gandhi Street,Chennai",ContactNo="9658745258"},
new Employee{ID=3,Name="Chandru",Age="30",Address="No.12,Shastri nagar,Chennai",ContactNo="5214587896"},
new Employee{ID=4,Name="Rakesh",Age="32",Address="No.23/5,Nehru Street,Chennai",ContactNo="9874021256"},
new Employee{ID=5,Name="Suresh",Age="32",Address="No.1/227,Nehru Street,Chennai",ContactNo="8541056387"},
new Employee{ID=11,Name="Suryakala",Age="28",Address="No.1,Pillayar koil Street,Chennai",ContactNo="9541204782"},
new Employee{ID=12,Name="Thivya",Age="41",Address="No.42,Ellaiamman koil Street,Chennai",ContactNo="9632140874"},
};
}
比较两个对象列表
protected List<Employee> ListCompare(List<Employee> lt1, List<Employee> lt2)
{
FillEmployeeList(ref lt1, ref lt2);
List<Employee> lst = new List<Employee>();
if (lt1.Count > 0 && lt2.Count > 0)
{
// Displaying Matching Records from List1 and List2 by ID
var result = (from l1 in lt1
join l2 in lt2
on l1.ID equals l2.ID
orderby l1.ID
select new
{
ID = l1.ID,
Name = (l1.Name == l2.Name) ? "$" : (l2.Name + " (Modified)"),
Age = (l1.Age == l2.Age) ? "$" : (l2.Age + " (Modified)"),
Address = (l1.Address == l2.Address) ? "$" : (l2.Address + " (Modified)"),
ContactNo = (l1.ContactNo == l2.ContactNo) ? "$" : (l2.ContactNo + " (Modified)")
}).ToList();
// Displaying Records from List1 which is not in List2
var result1 = from l1 in lt1
where !(from l2 in lt2
select l2.ID).Contains(l1.ID)
orderby l1.ID
select new
{
ID = l1.ID,
Name = " Deleted",
Age = " Deleted",
Address = " Deleted",
ContactNo = " Deleted"
};
// Displaying Records from List1 which is not in List2
var result2 = from l1 in lt2
where !(from l2 in lt1
select l2.ID).Contains(l1.ID)
orderby l1.ID
select new
{
ID = l1.ID,
Name = l1.Name + " (Added)",
Age = l1.Age + " (Added)",
Address = l1.Address + " (Added)",
ContactNo = l1.ContactNo + " (Added)"
};
var res1 = result.Concat(result1).Concat(result2);
foreach (var item in res1)
{
Employee emp = new Employee();
//Response.Write(item + "<br/>");
emp.ID = item.ID;
emp.Name = item.Name;
emp.Age = item.Age;
emp.Address = item.Address;
emp.ContactNo = item.ContactNo;
lst.Add(emp);
}
}
return lst;
}
这里我正在调用compareList方法,并返回结果并在HTML表格中显示。
List<Employee> lt1 = new List<Employee>();
List<Employee> lt2 = new List<Employee>();
List<Employee> resultset = new List<Employee>();
//string value = "ID";
StringBuilder htmlTable = new StringBuilder();
htmlTable.Append("<table border='1'>");
htmlTable.Append("<tr><th>ID</th><th>Name</th><th>Age</th><th>Address</th><th>ContactNo</th></tr>");
resultset = ListCompare(lt1, lt2);
foreach(var item in resultset)
{
htmlTable.Append("<tr>");
htmlTable.Append("<td>" + item.ID + "</td>");
htmlTable.Append("<td>" + item.Name + "</td>");
htmlTable.Append("<td>" + item.Age + "</td>");
htmlTable.Append("<td>" + item.Address + "</td>");
htmlTable.Append("<td>" + item.ContactNo + "</td>");
htmlTable.Append("</tr>");
}
htmlTable.Append("</table>");
PlaceHolder1.Controls.Add(new Literal { Text = htmlTable.ToString() });
我的问题是如何将这段代码泛化。我可能有任何类(例如Employee或Student)。我希望编写的代码只需将两个对象列表传递给CompareMethod(我将传递任何类型的对象列表以进行比较),它将返回列表作为结果。如何操作,请提供任何想法。