Recently ArcEngine There are many problems in the development process “ This item cannot be found in this collection ” Error of , The cause is different every time , The solution is also different , Do the following sorting , If you encounter other situations and solutions later , It will be updated from time to time

1.Feature.Shape Geometric assignment error

reason ：

• It may be a person with z No value z It's worth it
• It may also be caused by the inconsistency between the new geometry and the layer coordinate system , if z The processing method of value cannot solve , Then consider coordinate transformation to ensure that their coordinate system is one

z The solution to the value problem is as follows ：

Method 1：

• Set... For geometric objects z value

public static IGeometryDef GetGeometryDef(IFeatureClass featureClass)
{
    
     var fieldName = featureClass.ShapeFieldName;
     var index = featureClass.FindField(fieldName);
     return featureClass.Fields.Field[index].GeometryDef;
 }
/// <summary>
///  Set... For geometric information z value 
/// </summary>
/// <param name="geo"></param>
/// <param name="geometryDef"></param>
public static void SetZ(IGeometryDef geometryDef, ref IGeometry geo)
{
    
    if (geometryDef.HasZ)
    {
    
        IZAware zAware = geo as IZAware;
        zAware.ZAware = true;
        switch (geo.GeometryType)
        {
    
            case esriGeometryType.esriGeometryPoint:
                IPoint point = geo as IPoint;
                point.Z = point.Z is double.NaN ? 0 : point.Z;
                geo = point;
                break;
            case esriGeometryType.esriGeometryMultipoint:
                IPointCollection collection = geo as IPointCollection;
                for (int i = 0; i < collection.PointCount; i++)
                {
    
                    var p = collection.Point[i];
                    p.Z = 0;
                    collection.UpdatePoint(i, p);
                }
                geo = collection as IMultipoint;
                break;
            default:
                IZ iz = geo as IZ;
                if (iz != null)
                    iz.SetConstantZ(0);
                break;
        }
    }
}

Method 2：

• Remove layer's z value

IGeometryDefEdit geoDefEdit = geometryDef as IGeometryDefEdit;
geoDefEdit.HasZ_2 = false;

2.Feature.Store Report errors

reason ：
var cursor=layer.Search(filter,true)
Set up recycling The attribute is true, If only query attribute information , No problem , But if you modify the elements , Because it is automatically recycled, it will report the error that this item cannot be found in the collection , Change it to false that will do , As shown below ：

3.layer.FeatureClass.CreateFeature() Report the error

In general, this is a data problem , You will find that even directly in arcmap This error will also be reported when creating features in , At this point, the solution is to right-click the layer —— data —— Derived data , Edit again and you will find that there is no such problem . This may be what happens in the data production process bug