Hide the matrix when data in the fields is empty in rdlc file

To hide the matrix while fields are empty
Right click on matrix --> properties --> expression --> then below following code

Send SMS To Mobile using way2sms account in asp.net application

public void sendSMS(string uid, string password, string message, string no)
    {
        HttpWebRequest myReq =
      HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create("http://moneycentral.msn.com/investor/StockRating/srstopstocksresults.aspx?sco=1&page=1col=13" + uid + "&pwd=" + password + "&msg=" + message + "&phone=" + no + "&provider=way2sms");

        HttpWebResponse myResp = (HttpWebResponse)myReq.GetResponse();
        System.IO.StreamReader respStreamReader = new System.IO.StreamReader(myResp.GetResponseStream());
        string responseString = respStreamReader.ReadToEnd();
        respStreamReader.Close();
        myResp.Close();
    }



protected void Button1_Click(object sender, EventArgs e)
    {

        try
        {
            if (TextBox1.Text != String.Empty && TextBox2.Text != String.Empty)
            {
                sendSMS("yourmobileno", "yourpassword", TextBox2.Text, TextBox1.Text);
                TextBox1.Text = String.Empty;
                TextBox2.Text = String.Empty;
                Label3.Visible = true;
                Label3.Text = "Message Sented";
            }
            else
            {
                Label3.Visible = true;
                Label3.Text = "Not Sented";
            }
        }
        catch (Exception)
        {

            throw;
        }
    }