Encode URL before sending SMS in ASP.Net

SMS not sending using below code.

namespace gridview_filter
{
    public partial class WebForm1 : System.Web.UI.Page
    {
       
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!this.IsPostBack)
            {
                this.BindGrid();
                display1();
                display2();
                display3();
                display4();
                display5();
                display6();
                smssend();
                Label7.Text = DateTime.Now.ToShortDateString(); 
              
            }
        }
        private void smssend()
        {
            string Date = Label7.Text;
            string cOpen = Label1.Text;
            string cclosed = Label2.Text;
            string ctotal = Label3.Text;
            string tOpen = Label4.Text;
            string tClosed = Label5.Text;
            string ttotal = Label6.Text;
            string SMSurl = "http://185.255.8.59/sms/1/text/query?username=&password=&from=MUNPLA&to=919667044472.&text=Status of OCMS IT Issues  :" + Date + " (Today, Closed : " + cOpen + " , Open : " + cclosed + ", Total : " + ctotal + ") (Till Date, Open : " + tOpen + " ,  Closed :" + tClosed + " , Total : " + ttotal + ")&indiaDltContentTemplateId=1207164006640400176&indiaDltPrincipalEntityId=1201159222154902387";
        }
    }
}