Get Point X Y 2D

I get the element's X Y coordinate but it returns null

Code C#

void Test(string sPath)
{
    MicroStationDGN.Application app = new MicroStationDGN.Application();
    DesignFile dgnfile = app.OpenDesignFile(sPath, true);
    ElementScanCriteria _MSesc = new ElementScanCriteria();

    _MSesc.ExcludeAllTypes();
    _MSesc.IncludeType(MsdElementType.msdElementTypeLine);
    //_MSesc.IncludeType(MsdElementType.msdElementTypeLineString);
    
    _Element ele;
    ElementEnumerator ee = app.ActiveModelReference.Scan(_MSesc);

    while (ee.MoveNext())
    {
        ele = ee.Current;
             
        int iVectorCount = ele.AsLineElement.VerticesCount;

        Array xPoint = ele.AsLineElement.GetVertices();
        string sTEXT = ""; 


        for (int i = 0; i < iVectorCount; i++)
        {
            sTEXT += ", i = " + i 
            + " : X = " + xPoint.GetValue(0)
            + ", Y = " + xPoint.GetValue(1)
            + ", Z = " + xPoint.GetValue(2)
            ;
        }

        MessageBox.Show("sTEXT = " + sTEXT);

    }
}

Hi,

ba ranh said:

I want to get the X Y coordinates of the line element

Line or LineString element?

ba ranh said:

I convert to c# code

But, unfortunately, you did it wrongly.

As was discussed already in another thread, when you choose to wrote external application (and not in-process addin), you have to meet more requirements and the code is (a bit) more complex. In the discussed case, as described in VBA documentation, you should use CreateObjectInMicroStation method. But, I assume the error is not caused by this omission.

ba ranh said:

I get the element's X Y coordinate but it returns null

Did you read the error message? The problem is not it returns null.

How it is possible that MicroStation data type is to be loaded from WindowsFormsApp1 assembly? Without knowing how complete project is set (what assemblies are referenced etc.) it's hard to say.

ba ranh said:

Array xPoint = ele.AsLineElement.GetVertices();

Why this declaration is used?

GetVertices() returns Point3d[]

Regards,

  Jan

GetVertices() I see it as Array

GetVertices() I see it as Array

ba ranh said:

GetVertices() I see it as Array

Really?

Does not looks weird for you (as for developer) when it is "just array", without defining what type of object is stored in array?

Regards,

  Jan

Mine is an array

What assembly do you reference? I think your project is wrong, as it looks like your reference COM directly, not MicroStation interop assembly.

Regards,

  Jan

Yes it is a COM port
Can I see your reference?

ba ranh said:

Can I see your reference?

No. I maintain (only) several my old V8i projects now (because V8i is not supported product now), and none from them is external application, because it just not make any sense to make life harder and more limited, comparing to standard MicroStation addin.

Search this web, it was discussed several times, and I think some code was shared too.

But, what is difficult on referencing Interop assembly?

Regards,

  Jan