Copy a feature.shpe to another FeatureClass - Not right one

ShaningYu — Wed, 19 Jul 2017 11:35:39 GMT

I have an ArcObjects project. In this project, FeatureClass Source (termed as fc_Source here) is compared with FeatureClass Target (termed as fc_Target). The general logic is described below:

1) Loop through fc_Source, get a feature, termed featureS.

2) Check if the featureS. exists (or overlaps with a feature in fc_Target.

3) If the return is true on 2), set featureS as fc_Source.NextFeature. If the return is false in 2), featureS will be inserted into fc_Target, and then set featureS as fc_Source.NextFeature till all of the features in fc_Sourceare looped through.

In 3)'s Inserting a feature into fc_Target, I got such problem: the feature inserted does carry the featureS values but NOT its right geometry. The inserted one's geometry is actually the NextFeature of fc_Source. The simplified related code is below.

What is wrong in my code? I do wish someone can point out. Thanks a LOT.

// Loop though fc_Source

featCursor = fc_Source.Search(qfQuery, true);
IFeature featureS = featCursor.NextFeature();

// Loop featureS though fc_Target. If found featureT != null; else Not Fount, featureT = null;

IFeature featureT = getFeature_GeometryCompare(featureS, fc_Target);

while ( featureS != null) {

if (featureT != null) {

...

} else {

featureT = Assign_TargetFeature(featureS, fc_Target);

featureT.Store();

}

featureS = featCursor.NextFeature();

}

// "Assign Geometry & Values"
IFeature Assign_TargetFeature(IFeature f_Source, IFeatureClass fc_Target) {

IFeature f_Target = fc_Target.CreateFeature();
f_Target.Shape = f_Source.Shape;

// Assign values

......

return f_Target;

}

Re: Copy a feature.shpe to another FeatureClass - Not right one

ShaningYu — Wed, 19 Jul 2017 18:17:34 GMT

I have solved this problem. The trick is that the .Store() CANNOT be used. The proper solution is using feature.Insert(true). My code is below:

IFeature InsertFeature(IFeature f_Source, IFeatureClass fc_Target) {

            IFeature f = Assign_TargetFeature(f_Source, fc_Target );   // Assign values only
            IFeatureBuffer pFeatureBuffer = (IFeatureBuffer )f;
            IFeatureCursor pFeatureCursor = fc_Target.Insert(true);
            pFeatureBuffer.Shape = f_Source.Shape;
            pFeatureCursor.InsertFeature(pFeatureBuffer);
            return (IFeature)pFeatureBuffer;

}

Thanks for your review.

topic Copy a feature.shpe to another FeatureClass - Not right one in ArcObjects SDK Questions

Copy a feature.shpe to another FeatureClass - Not right one

Re: Copy a feature.shpe to another FeatureClass - Not right one