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Odd “可能没有签名的外地类型”——CS0170
原标题:Odd "Use of possibly unassigned field Type " - CS0170
  • 时间:2011-11-22 11:10:29
  •  标签:
  • c#
  • c#-4.0

我可能找不到一些东西,但我忘记了我认为似乎有奇怪的错误,而其他开发商都没有拿到同样的法典......

public void SomeMethod(... symbolInfo)
{
   ElementId elementId = symbolInfo.GetElementIds().Head(true);
   if (elementId.HasValue())
   {
      // error here "Use of possibly unassigned field  Type "
      object element = repository.FindElement(elementId.Type, elementId.Id);
      if (element != null) { ... }
   }
}

public struct ElementId
{
   public string Id;
   public MDAPI_ElementType Type;
}

采用以下推广方法:

public static bool IsEmpty(this ElementId id)
{
    return id.Type == ElementType.ElementUnknown || string.IsNullOrEmpty(id.Id);
}

public static bool HasValue(this ElementId id)
{
   return !id.IsEmpty();
}

谁能告诉我,这何在?

最佳回答

我先设法确定我的建筑错误,而是要求采用一种直接采用ElementId的推广方法。 我没有想法,为什么这样会把问题定下来!

public static object FindElement(this IMRepository rep, ElementId element)
{
    return rep.FindElement(element.Type, element.Id);
}
问题回答

暂无回答




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