Copy of Form design/codeing in C-Sharp Windows Application

Yes, you can copy all From design with code. Method explain above by Praveen
But don't forget to change namesapce and classname.

Yes you can..

Copy the form design first: say Form1.cs[Design]
to another form. say Form2.cs[Design]

then copy all the form1 code to form2 code;
i.e Form1.cs to Form2.cs

Do these things after that:

In the code for form 2, change this to

public partial class Form1 : Form
    {
      public Form1()
        {

public partial class Form2 : Form
    {
      public Form2()
        {

If the controls in form2 have to be same as in form1, then you don't need to change anything else.

Look for any controls that could get missing. Just remove them from resources.