private void btnAddNewUser_Click(object sender, EventArgs e) { try { AddNewUserCtl objAddUser = new AddNewUserCtl(); objAddUser.Parent = this.ParentForm; UserControlManager.UserControls.Push(this); Panel pnl = (Panel)this.ParentForm.Controls["pnlContext"]; string s = pnl.Name; objAddUser.ParentForm.Controls[s].Controls.Clear(); objAddUser.ParentForm.Controls[s].Controls.Add(objAddUser); } catch (Exception exp) { throw exp; } }