combo box y textbox

[alexgonzalez]

caso resuelto colegas coloco la solucion por si alguien la necesita
private void dtgrid_CellContentClick(object sender, DataGridViewCellEventArgs e)
{

string codAgency;
string agentId;
string agentSeq;
string token;
string agencyName;
string cadena;

codAgency = this.dtgrid.Rows[e.RowIndex].Cells[0].Value.ToString();
agentId = this.dtgrid.Rows[e.RowIndex].Cells[1].Value.ToString();
agentSeq = this.dtgrid.Rows[e.RowIndex].Cells[2].Value.ToString();
token = this.dtgrid.Rows[e.RowIndex].Cells[3].Value.ToString();
agencyName = this.dtgrid.Rows[e.RowIndex].Cells[5].Value.ToString();
txtptx.Text = this.dtgrid.Rows[e.RowIndex].Cells[5].Value.ToString();