Extracting Line properties from selection set, C# via COM

[dnlo]

Hello,
I'm using ActiveX methods from C#. I have a selection set of AcadLine entities and need to access their StrartPoint, EndPoint values. I get an object in selection set and trying to cast to AcadLine, then access its values. The code compiles, but at runtime have an error, saying the object referenced has not been instantiated. What is the problem?
How to get AcadLine properties from selection set?
Thanks in advance.

[Anonymous]

Are you expecting someone to guess what your code
isn't doing correctly?

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wrote in message news:5132413@discussion.autodesk.com...
Hello,
I'm using ActiveX methods from C#. I have a selection set of AcadLine entities and need to access their StrartPoint, EndPoint values. I get an object in selection set and trying to cast to AcadLine, then access its values. The code compiles, but at runtime have an error, saying the object referenced has not been instantiated. What is the problem?
How to get AcadLine properties from selection set?
Thanks in advance.

[dnlo]

Sorry,
the code is something like that:

for (...)
{
AcadEntity objInSset = sSetAllObjects((object) i);// sSetAllObject - selection set

AcadLine lineInSset;
lineInSset =(AcadLine)objInSset();
SomeDynamicArray.Add(lineInSset.Endpoint);//here is the problem

}