Crystal Reports 最大活动实例数
我在内存中加载水晶 ReportDocuments 的（多个）多个实例时遇到问题。使用以下代码：
Dim sRPT As New ReportDocument
sRPT.Load("PATH\TO\MY.RPT")
Dim sRPTs As New List(Of ReportDocument)
For i = 0 To 100
Dim sClone As ReportDocument = sRPT.Clone
sClone.Refresh()
sRPTs.Add(sClone)
Console.WriteLine("RPT Clonado " & i.ToString())
Next
当我到达第 74 个实例时，Refresh() 调用抛出“报告加载失败”异常。此外，即使直接调用 .Load(path) 方法，也会发生相同的异常，并影响应用程序内的所有 ReportDocumetns，无论我正在加载/刷新哪个 RPT 文件。
我目前正在使用 Crystal XI R2，但使用 v12 程序集 (CR 2008) 测试此代码时遇到了同样的问题。
有没有人遇到过这样的事情？所有这些实例的原因是每个用户的多个 rpt 文件的报告缓存，并且如果有针对此问题的不太讨厌的解决方法，很可能会保持原样。
I'm having trouble loading (several) multiple instances of crystal's ReportDocuments in memory. Using the following code:
Dim sRPT As New ReportDocument
sRPT.Load("PATH\TO\MY.RPT")
Dim sRPTs As New List(Of ReportDocument)
For i = 0 To 100
Dim sClone As ReportDocument = sRPT.Clone
sClone.Refresh()
sRPTs.Add(sClone)
Console.WriteLine("RPT Clonado " & i.ToString())
Next
when I reach the 74th instance, the Refresh() call throws a "Report Load failed" exception. Furthermore, the same exception happens even directly calling the .Load(path) method, and affects all ReportDocumetns within the application, regardless the RPT file I'm loading/refreshing.
I'm currently using Crystal XI R2, but testing this code with the v12 assemblies (CR 2008) ended with the same problem.
Has anyone ever stumbled with something like this? The reason for all this instances is a report caching for multiple rpt files, per user, and will most likely stay as it is if there is a not-so-nasty workaround for this problem.
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我以前遇到过这个问题，据我所知，解决这个问题的唯一方法是确保在完成报告后关闭它们。
I ran into this before, and AFAIK the only way around it is to make sure you close the reports when you are done with them.