CODEWITHSUNDEEP
c#object
mwilson
mwilson

Reputation: 12970

Return Object in C#

I'm trying to return an object in C#. In JavaScript, I would do this:

function myFunction () {
 var myObj = { firstName: "John", lastName: "Smith", age: 20};
return myObj;
}

Everything I'm reading about returning an object within C# is much different than this so it's throwing me for a loop.

What I want to do is run a query to SQL to get some user info and return the users Role, Full Name, Email, etc...

Here is my current C# Code:

    public static string getUserRole(string connectionString, string userId)
    {
        string role;
        SqlConnection sqlCon = new SqlConnection(connectionString);
        SqlCommand sqlCom = new SqlCommand();
        SqlDataReader reader;

        sqlCom.CommandText = "SELECT Role FROM myDatabase.Table WHERE Email = '" + userId + "'";
        sqlCom.CommandType = CommandType.Text;
        sqlCom.Connection = sqlCon;
        sqlCon.Open();
        reader = sqlCom.ExecuteReader();

        if (reader.Read())
        {
            role = reader.GetString(0);
            sqlCon.Close();
            return role;
        }
        else
        {
            return "An error has occurred";
        }
    }

I'm assuming I need to do something like the following but it doesn't work:

    public static string getUserRole(string connectionString, string userId)
    {
        string role;
        string fullName;
        string email;
        SqlConnection sqlCon = new SqlConnection(connectionString);
        SqlCommand sqlCom = new SqlCommand();
        SqlDataReader reader;

        sqlCom.CommandText = "SELECT Role FROM myDatabase.Table WHERE Email = '" + userId + "'";
        sqlCom.CommandType = CommandType.Text;
        sqlCom.Connection = sqlCon;
        sqlCon.Open();
        reader = sqlCom.ExecuteReader();

        if (reader.Read())
        {
            public class myObject
            {
                role = reader.GetString(0);
                fullName = reader.GetString(1);
                email = reader.GetString(2);
            }
            sqlCon.Close();
            return myObject;
        }
        else
        {
            return "An error has occurred";
        }
    }

I'm probably way off but from what I'm reading, object within c# are basically classes. So that makes sense. I need to create a class that defines my properties. Is this correct? I've ready lots of posts and watched some youtube videos but none are 'clicking'

Thanks in advance for any helpful input.

Upvotes: 0

Views: 2525

Answers (1)

Ehsan
Ehsan

Reputation: 32711

public class UserInfo
{
    public string role;
        public string fullName;
        public string email;
    public string ErrorCode;
}

and then change signatures to 

public static UserInfo getUserRole(string connectionString, string userId)

and then change 

if (reader.Read())
        {
            public class myObject
            {
                role = reader.GetString(0);
                fullName = reader.GetString(1);
                email = reader.GetString(2);
            }
            sqlCon.Close();
            return myObject;
        }
        else
        {
            return "An error has occurred";
        }

to create an object of UserInfo and return that. Like,

UserInfo info = new UserInfo();
if (reader.Read())
        {

                info.role = reader.GetString(0);
                info.fullName = reader.GetString(1);
                info.email = reader.GetString(2);

            sqlCon.Close();

        }
        else
        {
            info.ErrorCode =  "An error has occurred";
        }
  return info;

Note: Not the best way to do it, but should get you going. Just to give you an idea.

Upvotes: 4

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