using System;

public class Program

{

    public static void Main()

    {

        /*

        1. So in Windows Exlorer,right click on the *.edmx file and open with Notepad (or Notepad++/Textpad).

​

        2. Search for the text <EntityType Name="YourTableNameToAddColumn">.

​

        3. Add the property <Property Name="YourNewColumnName" Type="varchar" MaxLength="64" />

​

        4. Search for the text <MappingFragment StoreEntitySet="YourTableNameToAddColumn">

​

        5. Add mapping to the new column <ScalarProperty Name="YourNewColumnName" ColumnName="YourNewColumnName"/>

​

        6. Save the *.edmx file

        */

        Console.WriteLine("Hello World");

    }

}