How to get all used materials in Revit

[Anonymous]

I want to know is there a way to check whether the material is used in project or not. 
Or is there way to check for certain material whether it was used in project or not.
I have some materials with missing textures. and I want to know if that material is used in the project or not, in order to solve the problem about missing texture applied to that material.

[L.Maas · Accepted solution]

Use purge unused. Then you will get a list of elements including a list of materials not used.

Cancel out the command if you do not intend to purge anything.

The materials not in the list are the ones used in the project.

[ToanDN]

or create a Multi-categories material take-off schedule

[jklynsma]

Purge unused worked great for me.

[purvigirwin]

It doesn't tell you WHERE they are used, but in the materials browser you can view by "Show In Use" and "Show Unused"