I have an application using which the students can select the colleges they wish to join, in the application we currently give option to select max of 3 colleges and we say 1st preferred, 2nd preferred and 3rd preferred, we have a stored procedure which returns the data and the columns of that result set are as below.
UserId | FirstName | LastName | Email | Mobile | City |
FirstPreferredCollegeId | FirstPreferredCollegeName |
FirstPreferredCollegeGrade | FirstPreferredCollegePincode |
SecondPreferredCollegeId | SecondPreferredCollegeName |
SecondPreferredCollegeGrade | SecondPreferredCollegePincode |
ThirdPreferredCollegeId | ThirdPreferredCollegeName |
ThirdPreferredCollegeGrade | ThirdPreferredCollegePincode |
If we look at the above result set UserId, FirstName, LastName, Email, Mobile, City are unique where are PreferredCollegeId, PreferredCollegeName, PreferredCollegeGrade, PreferredCollegePinCode are repeating thrice.
My c# model looks like below.
Public Class User
{
Public int UserId {get;set;}
Public string FirstName {get;set;}
public string LastName {get;set;}
public string Email {get;set;}
public string Mobile {get;set;}
public string City {get;set;}
public List<Choice> Choices {get;set;}
}
public class Choice
{
public string PreferredCollegeId {get;set;}
public string PreferredCollegeName {get;set;}
public string PreferredCollegeGrade {get;set;}
public string PreferredCollegePincode {get;set;}
}
Now ADO.NET code looks like below, reader is SqlDataReader
object.
objUser.UserId = (string)reader["UserId"];
objUser.FirstName = (string)reader["FirstName"];
objUser.LastName = (string)reader["LastName"];
objUser.Email = (string)reader["Email"];
objUser.Mobile = (string)reader["Mobile"];
objUser.City = (string)reader["City"];
/* Here I need to loop through reader and get College details
Choice ch = new Choice();
Now I need to loop through the SqlDataReader
and get the PreferredCollegeId, PreferredCollegeName, PreferredCollegeGrade, PreferredCollegePincode and dynamically create an object of Choice class and bind these values to the Choice object - how do I achieve this?
Try something like this:
var prefixes = new List<string> {"First", "Second", "Third"};
objUser.Choices = new List<Choice>();
foreach(var prefix in prefixes)
{
objUser.Choices.Add(new Choice {
PreferredCollegeId= (string) reader[prefix + "PreferredCollegeId"],
PreferredCollegeName = (string) reader[prefix + "PreferredCollegeName"],
PreferredCollegeGrade = (string) reader[prefix + "PreferredCollegeGrade"],
PreferredCollegePincode = (string) reader[prefix + "PreferredCollegePincode"]
});
}
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