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Categories / C# Tutorial / ADO Net

 

Retrieving Schema and Constraints for a DataSet

using System; using System.Data; using System.Data.SqlClient;     class Program     {         static void Main(string[] args)         {             string sqlConnectString = "Data Source=(local);" +                 "Integrated security=SSPI;Initial Catalog=AdventureWorks;";             string sqlSelect = "SELECT ContactID,FirstName, LastName FROM Person.Contact";             SqlDataAdapter da = new SqlDataAdapter(sqlSelect, sqlConnectString);             DataSet ds = new DataSet( );             da.Fill(ds, "Contact");             Console.WriteLine("GetXmlSchema( ) = {0}", ds.GetXmlSchema( ));             DataSet dsSchema = new DataSet( );             da.FillSchema(dsSchema, SchemaType.Source, "Person.Contact");             da.Fill(dsSchema, "Contact");             Console.WriteLine(dsSchema.Tables.Count);             Console.WriteLine("GetXmlSchema( ) = {0}", dsSchema.GetXmlSchema( ));         }     }