Question

How can I return multiple values from a class in C# I tried in the below way but it didn’t work for me.

protected static string setvalues;
public static string myfunction()
{
        cmd = new SqlCommand("SELECT * FROM category", con);
        con.Open();
        SqlDataReader dr = cmd.ExecuteReader();
        while (dr.Read())
        {
            setvalues = dr[0].ToString();
        }
        con.Close();
        return setvalues.ToString();
}

I have the following in Categories table

Mobiles
Laptops
Cloths
DVD players
Televisions
Cameras

Anybody please help me in building a code that can return thousands of values.

Answer 1

The List type in the C# language can solve above problem. With List, you do not need to manage the size on your own

    protected static List<string> listSetValues = new List<string>();
    public static List<string> myfunction()
    {
        cmd = new SqlCommand("SELECT * FROM category", con);
        con.Open();
        SqlDataReader dr = cmd.ExecuteReader();
        while (dr.Read())
        {
            listSetValues.Add(dr[0].ToString());
        }
        con.Close();
        return listSetValues;
    }