更新自定义字段将以无限循环结束

Question

我在相应的AP Ref中具有AR发票和备忘录（屏幕ID AR301000）中的自定义字段。nbr。在类似的管理器中，AP帐单和调整（屏幕ID AP301000）中的另一个自定义字段（相应的AR Ref）。nbr。

我正在尝试更新AP Ref。nbr。在AR屏幕上，当用户更新AR Ref时。nbr。在AP屏幕中。

例如 -

我在AR屏幕发票0001上，我正在更新AP Ref。nbr。到ABC01。系统将使用相应的AR Ref自动更新AP Bill ABC01。nbr。用0001。

我有以下代码以实现此目的，但它陷入了无限循环，因为这两者都试图在其他屏幕中更新相应的字段。让我知道我是否缺少任何东西或有更好的方法。

在AR图扩展上

public class ARInvoiceEntryExtension : PXGraphExtension<ARInvoiceEntry>
{
	protected virtual void ARInvoice_RowUpdated(PXCache sender, PXRowUpdatedEventArgs e)
	{
		var row = (ARInvoice)e.Row;
		if (row != null && sender.IsDirty)
		{
			ARRegisterExtension ext = PXCache<ARRegister>.GetExtension<ARRegisterExtension>(row);
			if (ext != null && !string.IsNullOrEmpty(ext.UsrAPRefNbr))
			{
				APInvoiceEntry graph = PXGraph.CreateInstance<APInvoiceEntry>();
				APInvoice apRow = PXSelect<APInvoice,
					Where<APInvoice.refNbr, Equal<Required<APInvoice.refNbr>>>>.Select(graph, ext.UsrAPRefNbr);
				if (apRow != null)
				{
					APRegisterExtension ext1 = PXCache<APRegister>.GetExtension<APRegisterExtension>(apRow);
					if (ext1 != null && string.IsNullOrEmpty(ext1.UsrARRefNbr))        //Update only if it is empty
					{
						ext1.UsrARRefNbr = row.RefNbr;
						graph.Document.Current = apRow;
						graph.Caches[typeof(APRegister)].SetValue<APRegisterExtension.usrARRefNbr>(apRow, row.RefNbr);
						graph.Caches[typeof(APRegister)].Update(apRow);
						graph.Actions.PressSave();
					}
				}
			}
		}
	}
}

在AP Graph Extension上

public class APInvoiceEntryExtension : PXGraphExtension<APInvoiceEntry>
{
	protected virtual void APInvoice_RowUpdated(PXCache sender, PXRowUpdatedEventArgs e)
	{
		var row = (APInvoice)e.Row;
		if (row != null && sender.IsDirty)
		{
			APRegisterExtension ext = PXCache<APRegister>.GetExtension<APRegisterExtension>(row);
			if (ext != null && !string.IsNullOrEmpty(ext.UsrARRefNbr))
			{
				ARInvoiceEntry graph = PXGraph.CreateInstance<ARInvoiceEntry>();
				ARInvoice arRow = PXSelect<ARInvoice,
					Where<ARInvoice.refNbr, Equal<Required<ARInvoice.refNbr>>>>.Select(graph, ext.UsrARRefNbr);
				if (arRow != null)
				{
					ARRegisterExtension ext1 = PXCache<ARRegister>.GetExtension<ARRegisterExtension>(arRow);
					if (ext1 != null && string.IsNullOrEmpty(ext1.UsrAPRefNbr))        //Update only if it is empty
					{
						ext1.UsrAPRefNbr = row.RefNbr;
						graph.Document.Current = arRow;
						graph.Caches[typeof(ARRegister)].SetValue<ARRegisterExtension.usrAPRefNbr>(arRow, row.RefNbr);
						graph.Caches[typeof(ARRegister)].Update(arRow);
						graph.Actions.PressSave();
					}
				}
			}
		}
	}
}

AR缓存扩展

public class ARRegisterExtension : PXCacheExtension<ARRegister>
{
	public abstract class usrAPRefNbr : PX.Data.IBqlField
	{
	}
	protected string _usrAPRefNbr;
	[PXDBString(15)]
	[PXUIField(DisplayName = "AP Ref Nbr.", Visibility = PXUIVisibility.SelectorVisible)]
	[APInvoiceType.RefNbr(typeof(Search3<PX.Objects.AP.Standalone.APRegisterAlias.refNbr,
	InnerJoinSingleTable<APInvoice, On<APInvoice.docType, Equal<PX.Objects.AP.Standalone.APRegisterAlias.docType>,
		And<APInvoice.refNbr, Equal<PX.Objects.AP.Standalone.APRegisterAlias.refNbr>>>,
	InnerJoinSingleTable<Vendor, On<PX.Objects.AP.Standalone.APRegisterAlias.vendorID, Equal<Vendor.bAccountID>>>>,
	OrderBy<Desc<APRegister.refNbr>>>))]
	public virtual string UsrAPRefNbr
	{
		get; set;
	}
}

ap缓存扩展

public class APRegisterExtension : PXCacheExtension<APRegister>
{
	public abstract class usrARRefNbr : PX.Data.IBqlField
	{
	}
	protected string _usrARRefNbr;
	[PXDBString(15)]
	[PXUIField(DisplayName = "AR Ref Nbr.", Visibility = PXUIVisibility.SelectorVisible)]
	[ARInvoiceType.RefNbr(typeof(Search3<PX.Objects.AR.Standalone.ARRegisterAlias.refNbr,
	InnerJoinSingleTable<ARInvoice, On<ARInvoice.docType, Equal<PX.Objects.AR.Standalone.ARRegisterAlias.docType>,
		And<ARInvoice.refNbr, Equal<PX.Objects.AR.Standalone.ARRegisterAlias.refNbr>>>,
	InnerJoinSingleTable<Customer, On<PX.Objects.AR.Standalone.ARRegisterAlias.customerID, Equal<Customer.bAccountID>>>>,
	OrderBy<Desc<ARRegister.refNbr>>>))]
	public virtual string UsrARRefNbr
	{
		get; set;
	}
}

Answer 1

保存时，apinvoice_rowupped修改了arinvoice，进而修改apinvoice，触发apinvoice_rowupped at taged apinvoe_rowupped产生了事件呼叫的无限环路。ARINVOICE_ROWUPED的倒数更新Apinvoice将导致类似的无限循环。

为了摆脱此功能，您可以在实例化图表后在运行时删除图形事件处理程序。首先使您的活动处理程序访问修饰符公开，因此您可以参考：

public virtual void APInvoice_RowUpdated(PXCache sender, PXRowUpdatedEventArgs e) 

创建图形后，获取扩展名并删除导致无限循环的处理程序：

APInvoiceEntry graph = PXGraph.CreateInstance<APInvoiceEntry>();
APInvoiceEntryExtension graphExt = graph.GetExtension<APInvoiceEntryExtension>();
graphExt.RowUpdated.RemoveHandler<APInvoice>(graphExt.APInvoice_RowUpdated);

必须对Arinvoice进行相同的修改，因为无限循环从AP到AR到AR到AP。