Set Windows Form DataGridView selected row cell value in TextBox

This is the code I used.

PartyEdit partyEdit = new PartyEdit();
partyEdit.txt1.Text = this.ddlgrdParty.CurrentRow.Cells[2].Value.ToString();
partyEdit.txt2.Text = this.ddlgrdParty.CurrentRow.Cells[3].Value.ToString();

Thank you for support.