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German AT
Asked: 2020-03-28 11:11:51 +0800 CST 2020-03-28 11:11:51 +0800 CST

Error in LinQ Enumerable.Except method

  • 772

I have the following code:

var vistaRecibos = (from r in ctx.RECIBOSPAGO_DETALLE_GENERAL
                                  select new
                                  {
                                      r.idrecibopago,
                                  });

                var vistaAsientos = (from a in ctx.ASIENTO_CONTABLE
                                  select new
                                  {
                                      a.idrecibopago,
                                  });

                vistaRecibos = vistaRecibos.Except(vistaAsientos);

Which gives me error:

Error 71 Type arguments to method 'System.Linq.Enumerable.Except(System.Collections.Generic.IEnumerable, System.Collections.Generic.IEnumerable)' cannot be inferred from usage. Try specifying the type arguments explicitly. C:\Users\German\Desktop\SAM Administrative\Leon\SAM1\Contabilidad\frmExportarAsientosContables.cs 461 36 sammayorazgo

I have used this comparison in other solutions and it does not give me an error (even the extra comma does not cause conflicts, and if I remove it, the problem continues).

Does anyone know how to fix it?

c#

1 Answers

  1. Best Answer

    Simplify your lines like this

    var vistaRecibos = from r in ctx.RECIBOSPAGO_DETALLE_GENERAL
                                  select r.idrecibopago;

var vistaAsientos = from a in ctx.ASIENTO_CONTABLE
                                  select a.idrecibopago;

vistaRecibos = vistaRecibos.Except(vistaAsientos);

    It is not necessary to add the word new {} , you would need it if you were mapping to another data type.

    • 1