Erro no WebService
System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.InvalidCastException: Cannot cast DBNull.Value to type 'System.Int32'. Please use a nullable type. at System.Data.DataRowExtensions.UnboxT`1.ValueField(Object value) at Livraria.b__2f(DataRow item) at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext() at ObjectShredder`1.Shred(IEnumerable`1 source, DataTable table, Nullable`1 options) at Livraria.getProdutos2(Int32 p_iPagina, Int32 p_iNumeroRegistros, String p_sIdGrupo, String p_sIdSubGrupo, String p_sIdProduto) --- End of inner exception stack trace ---