DataSet ds=new DataSet();
System.Data.SqlClient.SqlConnection cnn=new System.Data.SqlClient.SqlConnection("server=(local);database=northwind;trusted_connection=yes") ; cnn.Open();
System.Data.SqlClient.SqlCommand cmd=new System.Data.SqlClient.SqlCommand(); cmd.Connection=cnn; cmd.CommandText="Select * from PersonDetails where 1<>1" ; System.Data.SqlClient.SqlDataReader dr=cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection) ; this.dataGrid1.DataSource=dr.GetSchemaTable(); cnn.Close(); dr.Close(); 
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