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I am creating an ArcGIS Model that imports a number of Bentley .dgn files to a geodatabase. My workflow involves:

  1. Running the CAD to Geodatabase Tool, which brings all the drawing features into a feature dataset.
  2. Taking the feature types and then selecting features by the "layer" attribute and writing them to a feature class with an appropriate name.

My issue occurs at the Select tool. It will create a feature class even if it did not find any features to place in the feature class. This creates a whole bunch of empty feature classes since there are a number of layers which may or may not show up in any of my .dgns. So, I would like to know if there is a way to keep my model from creating blank feature classes?

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Use the Get Count Management tool described in the link and create a condition that prevents the creation of a feature class unless it returns a non-0 number.

The above link is for ArcGIS 9.3. If you are using 10, the documentation here is more appropriate.

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