小编GaG*_*aGa的帖子

using System;
using System.Collections;
using System.Collections.Generic;
using System.Runtime.Serialization;
using PX.Common;
using PX.Data;
using PX.Objects.CM;
using PX.Objects.CA;
using PX.Objects.CS;
using PX.Objects.GL;
using PX.Objects.CR;
using PX.Objects;
using PX.Objects.AP;

namespace PX.Objects.AP
{
  
  public class APPaymentEntry_Extension:PXGraphExtension<APPaymentEntry>
  {

    #region Event Handlers
      public PXAction<APPayment> ShowURL; 
      [PXUIField(DisplayName = "Print Remittance")] 
      [PXButton]
        
      protected virtual void showURL() 
      { 
          APPayment doc = Document.Current;
          if (doc.RefNbr != null) {
            throw new PXReportRequiredException(doc.RefNbr, "AP991000", null);
          }
      }

    #endregion

  }


}