Buttons Enabled Property not Working Properly

Question

Hi all,

I am creating an Windows Application. I have two buttons.
I have written the following code snippet.

frmRb obj = new frmrb();
private void btnPd_Click(object sender, EventArgs e)
        {
           btnCancel.Enabled = true;
           obj.btnRtn.Enabled = true;
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.Close();
            obj.BringToFront();
            obj.Focus();
        }

The above coding does not generate any error.

All the statements are working properly but the following statement is not working properly:

obj.btnRtn.Enabled = true;

is not executed.

The frmrb forms is bring to front and it is focussed but btnRtn is not Enabled that is the statement obj.btnRtn.Enabled = true; is not working.

By default I have set the property of btnRtn Enabled to false.
And Please note the Modifier property of btnRtn button is set to PUBLIC.

Now how should I change the coding so that I can get this statement executed.

obj.btnRtn.Enabled = true;

Can anybody help me out?

Thanks in Advance!!