code sample for splitting a line feature into two lines at a specified point.

Question

Hi All,

Could you point me to any C# code samples for splitting a polyline (IPolyline) into two at a specified point (with an IPoint reference)?

Thanks in advance!

George S.

GeorgeShi · Answer

thank you both!

Anonymous User · Answer

For a simple line and point you can just use IFeatureEdit2.SplitWithUpdate to split the line and update the attributes.IFeatureEdit2 featureEdit = lineFeature as IFeatureEdit2;
featureEdit.SplitWithUpdate(splitPoint);

Alternatively you can keep the returned ISet to do something useful, like keep all the lines selected in this example.
            IFeatureEdit2 featureEdit = lineFeature as IFeatureEdit2;
//select features after split
featSelection.Add(lineFeature);
ISet newSet = featureEdit.SplitWithUpdate(splitPoint);
newSet.Reset();
IFeature newFeat = newSet.Next() as IFeature;
featSelection.Add(newFeat);

kenbuja · Answer

It's a little old (and not in C#), but here's an example of splitting a line with points