已经定义了一个使用相同参数类型调用的成员 c#

Question

Just as title says i have this error already defines a member called with the same parameter types c#

I have looked into multiple same questions but they all tells why does it happens and how to deal with it (change name of method to some other) BUT i do not want to change method name to something other because it is same method but with different parameter so i just want to bypass it.

Here are 2 methods i have:

public static List<int> Lista(int vrDok)
{
    List<int> list = new List<int>();
    using (FbConnection con = new FbConnection(M.Baza.connectionKomercijalno2018))
    {
        con.Open();
        using (FbCommand cmd = new FbCommand("SELECT BRDOK FROM DOKUMENT WHERE VRDOK = @VrDok ORDER BY DATUM ASC", con))
        {
            cmd.Parameters.AddWithValue("@VrDok", vrDok);

            FbDataReader dr = cmd.ExecuteReader();

            while (dr.Read())
            {
                list.Add(Convert.ToInt32(dr[0]));
            }
        }
    }
    return list;
}
public static List<int> Lista(int magacinId)
{
    List<int> list = new List<int>();
    using (FbConnection con = new FbConnection(M.Baza.connectionKomercijalno2018))
    {
        con.Open();
        using (FbCommand cmd = new FbCommand("SELECT BRDOK FROM DOKUMENT WHERE MAGACINID = @MID ORDER BY DATUM ASC", con))
        {
            cmd.Parameters.AddWithValue("@MID", magacinId);

            FbDataReader dr = cmd.ExecuteReader();

            while (dr.Read())
            {
                list.Add(Convert.ToInt32(dr[0]));
            }
        }
    }
    return list;
}

So as you can see they are totally identical but with different parameter and it drops me error.

How can i bypass it?

Answer 1

It gives error because the method signature is the same
- Lista(int)
- Lista(int)
The parameters name doesn't matter.

You can resolve in different ways:
- Change the name of one method (ex. ListaByVrDok, ListaByMagician) <= recommended
- Move one method in another class
- Add a parameter to one method
- Change int in double in one method

Answer 2

Any of Davide suggestions will work. Another options is to do just have one method that takes the ID and the Parameter Name like so:

public static List<int> Lista(int id,string paramName)
{
    List<int> list = new List<int>();
    using (FbConnection con = new FbConnection(M.Baza.connectionKomercijalno2018))
    {
        con.Open();
        using (FbCommand cmd = new FbCommand("SELECT BRDOK FROM DOKUMENT WHERE MAGACINID = @MID ORDER BY DATUM ASC", con))
        {
            cmd.Parameters.AddWithValue(paramName, id);

            FbDataReader dr = cmd.ExecuteReader();

            while (dr.Read())
            {
                list.Add(Convert.ToInt32(dr[0]));
            }
        }
    }
    return list;
}

Since everything in both methods are the same and just which parameter name changes.

Answer 3

The name I chose for my migration has already been used.

add-migration "added-list-to-model-a"

All I needed to do was to change the name of my migration.

add-migration "re-added-list-to-model-a"