I Have Two Forms (Mdi parent is form 1 and Mdi Child form 2 ) .How Can I Pass The Values From Child Mdi to Parent Mdi ?

I Create Mdi Parent form and I Call Mdi parent Inside of Mdi Child Form at i give some String input on Child Form.How Can i Pass String Values Child to Parent Form. I need Pass Only Values But Not Parent Form Load Event.

//Parent MAIN FORM
        private void othersToolStripMenuItem_Click(object sender, EventArgs e)
        {
          
            OthersFrm other = new OthersFrm();
            other.MdiParent = this;
            other.StartPosition = FormStartPosition.Manual;
           // other.Size = this.ClientSize;
            other.Location = new System.Drawing.Point(134, 52);
            //other.Size = new System.Drawing.Size(784, 529);
            other.Show();
        }

//Child OTHERS Form

        private void btnsave_Click(object sender, EventArgs e)
        {
            //objDO.proc = textBox9.Text;
            objDO.compan = txtFCdesc.Text;
            this.Hide();
            MAIN ma = new MAIN();
            // ma.MdiParent = this;
            ma.Show();
        }