getting Data Source value dynamically still giving null value

string strcon = "Initial Catalog=POS;User ID=sa;Password=103";
   protected void Page_Load(object sender, EventArgs e)
   {
       
       if (Page.IsPostBack == false)
       {
           string[] parts = strcon.Split(';');
                      
           string dataSource = "";
           for (int i = 0; i < parts.Length; i++)
           {
               string part = parts[i].Trim();
               if (part.StartsWith("Data Source="))
               {
                   dataSource = part.Replace("Data Source=", "");
                   break;
               }
           }
       }
   }