export database table structure to excel using c#

using System.Data.SqlClient;
using Microsoft.SqlServer.Management.Common;
using Microsoft.SqlServer.Management.Smo;


 SqlConnection conSql = new SqlConnection(ConnectionString);
            ServerConnection con = new ServerConnection(conSql);
            Server server = new Server(con);
            DatabaseCollection dbCollection = server.Databases;
            TableCollection tbls = dbCollection["YOURDBNAME"].Tables;
            System.Collections.Specialized.StringCollection sCollection = tbls["YOURTABLENAME"].Script();
            StringBuilder sb = new StringBuilder();
            string[] tblscriptArray = new string[tbls["YOURTABLENAME"].Script().Count];
            sCollection.CopyTo(tblscriptArray, 0);