Getting feature classes in feature dataset

azlotin

Given a geodatabase and a feature dataset name, what is the proper way to get the names of all feature classes contained in the feature dataset? I can get the list of FeatureClassDefinitions of all feature classes in the geodatabase, open each feature class, call GetFeatureDataset method and see if the feature dataset name of the feature class  matches the input feature dataset name. This looks like a very costly operation though. Thanks.  

CharlesMacleod

Hi Alex,

Look here...

ProSnippets Geodatabase Obtaining List of Defintions from Geodatabase

ProSnippets Geodatabase, Obtaining related definitions from geodatabase

piecing the bits together gives you what you want

<SPAN class="comment token">//From the snippets...</SPAN>

IReadOnlyList<SPAN class="operator token"><</SPAN>FeatureDatasetDefinition<SPAN class="operator token">></SPAN> featureDatasetDefinitions <SPAN class="operator token">=</SPAN> geodatabase<SPAN class="punctuation token">.</SPAN>GetDefinitions<SPAN class="operator token"><</SPAN>FeatureDatasetDefinition<SPAN class="operator token">></SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
<SPAN class="keyword token">bool</SPAN> electionRelatedFeatureDatasets <SPAN class="operator token">=</SPAN> featureDatasetDefinitions<SPAN class="punctuation token">.</SPAN><SPAN class="token function">Any</SPAN><SPAN class="punctuation token">(</SPAN>definition <SPAN class="operator token">=</SPAN><SPAN class="operator token">></SPAN> definition<SPAN class="punctuation token">.</SPAN><SPAN class="token function">GetName</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">Contains</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"Election"</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>and<SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>

FeatureDatasetDefinition featureDatasetDefinition <SPAN class="operator token">=</SPAN> geodatabase<SPAN class="punctuation token">.</SPAN>GetDefinition<SPAN class="operator token"><</SPAN>FeatureDatasetDefinition<SPAN class="operator token">></SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"LocalGovernment.GDB.Address"</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
IReadOnlyList<SPAN class="operator token"><</SPAN>Definition<SPAN class="operator token">></SPAN> datasetsInAddressDataset <SPAN class="operator token">=</SPAN> geodatabase<SPAN class="punctuation token">.</SPAN><SPAN class="token function">GetRelatedDefinitions</SPAN><SPAN class="punctuation token">(</SPAN>featureDatasetDefinition<SPAN class="punctuation token">,</SPAN> DefinitionRelationshipType<SPAN class="punctuation token">.</SPAN>DatasetInFeatureDataset<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>



<SPAN class="comment token">//put it together and you get...</SPAN>
IReadOnlyList<SPAN class="operator token"><</SPAN>Definition<SPAN class="operator token">></SPAN> fdsList <SPAN class="operator token">=</SPAN> gdb<SPAN class="punctuation token">.</SPAN><SPAN class="token function">GetDefinitions</SPAN><SPAN class="punctuation token">(</SPAN>DatasetType<SPAN class="punctuation token">.</SPAN>FeatureDataset<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
<SPAN class="comment token">//get all the feature classes...</SPAN>
<SPAN class="keyword token">foreach</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">var</SPAN> fdsDef <SPAN class="keyword token">in</SPAN> fdsList<SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN>
    <SPAN class="keyword token">var</SPAN> defsInDataset <SPAN class="operator token">=</SPAN> gdb<SPAN class="punctuation token">.</SPAN><SPAN class="token function">GetRelatedDefinitions</SPAN><SPAN class="punctuation token">(</SPAN>fdsDef<SPAN class="punctuation token">,</SPAN> DefinitionRelationshipType<SPAN class="punctuation token">.</SPAN>DatasetInFeatureDataset<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
                
    <SPAN class="keyword token">foreach</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">var</SPAN> def <SPAN class="keyword token">in</SPAN> defsInDataset<SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN> <SPAN class="comment token">//Or use LINQ .Where( d => d.DatasetType ...</SPAN>
       <SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN>def<SPAN class="punctuation token">.</SPAN>DatasetType <SPAN class="operator token">==</SPAN> DatasetType<SPAN class="punctuation token">.</SPAN>FeatureClass<SPAN class="punctuation token">)</SPAN>
         <SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN> etc <SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="punctuation token">.</SPAN>

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