Send SMS to each individual using DataGridView in Windows Application

I want to send sms for each row. how to get solution pls?

I Have display data in the datagridview and i wrote the code following way

private DataTable GetDateSheet()
{
    SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["conStr"].ConnectionString);
    string myqry = @"DECLARE @cols AS NVARCHAR(MAX),
                    @query  AS NVARCHAR(MAX)
                    select @cols = STUFF((SELECT ',' + QUOTENAME(ExamDate) from tblDateSheet
                    group by ExamDate order by ExamDate FOR XML PATH(''), TYPE ).value('.', 'NVARCHAR(MAX)')
                    ,1,1,'')
                    set @query = 'SELECT ROW_NUMBER() OVER(ORDER BY(AdmissionNo))Row,AdmissionNo,SName,FName,FPhone,ExamType,ClassName,SectionName,STime,' + @cols + ' from
                    (
                    select AdmissionNo,SName,FName,FPhone,ExamType,ClassName,SectionName,SubjectName,STime,ExamDate
                    from tblDateSheet as dts inner join tblSetExam as se on dts.SetExamID=se.SetExamID
                    inner join tblStdReg as sr on dts.ClassID=sr.ClassID and dts.SectionID=sr.SectionID
                    inner join tblDefClass as dc on dts.ClassID=dc.ClassID
                    inner join tblDefSection as ds on ds.SectionID=dts.SectionID
                    inner join tblAssignSubjects as si on dts.SubjectID=si.ASID
                    inner join tblDefSubject as dsb on si.SubjectID=dsb.SubjectID
                    where dts.SetExamID='+@EId+' and dts.ClassID='+@CId+' and dts.SectionID='+@SId+'
                    ) x
                    pivot
                    (
                    max(SubjectName)
                    for ExamDate in (' + @cols + ')
                    ) p '
                    execute(@query);";

    SqlCommand cmd = new SqlCommand(myqry, con);
    cmd.Parameters.Add(new SqlParameter("@EId", this.cmbExam.SelectedValue.ToString()));
    cmd.Parameters.Add(new SqlParameter("@CId", this.cmbClass.SelectedValue.ToString()));
    cmd.Parameters.Add(new SqlParameter("@SId", this.cmbSection.SelectedValue.ToString()));
    SqlDataAdapter adapt = new SqlDataAdapter();
    DataTable sTable = new DataTable();
    adapt.SelectCommand = cmd;
    //adapt.Fill(sTable);

    ds = new DataSet();
    adapt.Fill(ds, "tblDateSheet");
    sTable = ds.Tables["tblDateSheet"];
    dGVSession.DataSource = ds.Tables["tblDateSheet"].DefaultView;
    con.Close();
    return sTable;
}
private void btnSMS_Click(object sender, EventArgs e)
{
    try
    {
        string dynamicVal = string.Empty;
        string Number = string.Empty;
        DataTable dt = GetDateSheet();
        foreach (DataGridViewRow row in dGVSession.Rows)
        {
            Number = row.Cells["FPhone"].Value.ToString();
            DataRow[] dr = dt.Select("AdmissionNo='" + row.Cells[1].Value + "'");
            for (int i = 0; i < dr.Length; i++)
            {
                for (int k = 0; k < dt.Columns.Count - 1; k++)
                {
                    string columnName = dt.Columns[k + 1].ColumnName;

                    string value = dr[i].ItemArray[k].ToString() == "" ? "Null" : dr[i].ItemArray[k].ToString();
                    if (k >= 9)
                    {
                        dynamicVal += value + " on " + Convert.ToDateTime(columnName).ToString("dd.MM.yy") + ".";
                    }
                    else
                    {
                        dynamicVal += value + ",";
                    }
                }
                dynamicVal += "\n";
            }
        }
        MessageBox.Show("Result is: " + dynamicVal);
    }
    catch (Exception ex)
    {
        MessageBox.Show("Following Error: " + ex.ToString());
    }
}