async public Task <IFeature> GetNodeFeatureAttributes(int nodeId, string[] attributes)
{
try
{
QueryFilter filter = new QueryFilter();
filter.WhereClause = "FDB_OID=" + nodeId;
filter.AddField("FCID");
filter.AddField("OID");
IFeature feature;
using (IFeatureCursor cursor = await GetNodeFeatures(filter))
feature = await cursor.NextFeature();
if (feature == null)
{
return(null);
}
string fcName = await _fdb.GetFeatureClassName((int)feature["FCID"]);
IDatasetElement element = await _dataset.Element(fcName);
if (element == null)
{
return(null);
}
IFeatureClass fc = element.Class as IFeatureClass;
if (fc == null)
{
return(null);
}
filter = new QueryFilter();
if (fc is IDatabaseNames)
{
filter.WhereClause = ((IDatabaseNames)fc).DbColName(fc.IDFieldName) + "=" + Convert.ToInt32(feature["OID"]);
}
else
{
filter.WhereClause = _fdb.DbColName(fc.IDFieldName) + "=" + Convert.ToInt32(feature["OID"]);
}
if (attributes == null)
{
filter.AddField("*");
}
else
{
foreach (string attribute in attributes)
{
if (attribute == "*")
{
filter.AddField(attribute);
}
else if (fc.FindField(attribute) != null)
{
filter.AddField(attribute);
}
}
}
using (IFeatureCursor cursor = await fc.GetFeatures(filter))
feature = await cursor.NextFeature();
if (feature != null)
{
feature.Fields.Add(new FieldValue("_classname", fc.Name));
}
return(feature);
}
catch
{
return(null);
}
}
