How to convert int month into string month of date type input: year i

private DataTable MonthlyAttendanceReport()
{
    SqlCommand cmd = new SqlCommand("UIPKGREPORTING_spFetchMonthlyAttendanceReport", connection);
    cmd.CommandType = CommandType.StoredProcedure;
    cmd.Parameters.Add("@inVolunteerID", SqlDbType.Int).Value = drp_Volunteer.SelectedValue;
    cmd.Parameters.AddWithValue("@inType", drp_Type.Text);
    cmd.Parameters.AddWithValue("@inShift", drp_Shift.Text);
    cmd.Parameters.AddWithValue("@inFromDateTime", dtp_Year.Value);
    cmd.Parameters.AddWithValue("@inToDateTime", dtp_Month.Value);
    cmd.Parameters.Add("@inPoints", SqlDbType.Int).Value = -1;
    SqlDataAdapter sda = new SqlDataAdapter(cmd);
    DataSet dt = new DataSet();
    sda.Fill(dt, "abc");
    dataGridView1.DataSource = dt.Tables["abc"].DefaultView;
    labeltc.Text = dt.Tables["abc"].Rows.Count.ToString();
    return dt.Tables["abc"];
}

I Have 2 dtp_Year in this Format "2022"; & Month Format "May"