private static string GetFeatureIdColumn(FeatureLayer featureLayer)
{
string featureIdColumn = string.Empty;
LayerPlugin layerPlugin = GisEditor.LayerManager.GetLayerPlugins(featureLayer.GetType()).FirstOrDefault();
if (layerPlugin != null)
{
Uri uri = layerPlugin.GetUri(featureLayer);
if (uri != null && GisEditor.LayerManager.FeatureIdColumnNames.ContainsKey(uri.ToString()))
{
featureIdColumn = GisEditor.LayerManager.FeatureIdColumnNames[uri.ToString()];
GisEditor.LayerManager.FeatureIdColumnNames.Remove(uri.ToString());
GisEditor.LayerManager.FeatureIdColumnNames[featureLayer.FeatureSource.Id] = featureIdColumn;
}
else if (GisEditor.LayerManager.FeatureIdColumnNames.ContainsKey(featureLayer.FeatureSource.Id))
{
featureIdColumn = GisEditor.LayerManager.FeatureIdColumnNames[featureLayer.FeatureSource.Id];
}
else if (GisEditor.LayerManager.FeatureIdColumnNames.Count == 0)
{
if (string.IsNullOrEmpty(featureIdColumn) &&
featureLayer.FeatureSource.IsOpen)
{
var apnColumn = featureLayer.FeatureSource.GetColumns().FirstOrDefault(c => { return(c.ColumnName == "APN"); });
if (apnColumn != null)
{
featureIdColumn = "APN";
}
}
}
}
return(featureIdColumn);
}
