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I'm trying to join a field in a table to a raster layer. I'm using the tool 'Join Field'. The table is in a excel sheet, but have been imported to a file geodatabase. The table has an ObjectID field which i'm using as join field. When i run the tool there is no error message, but the field from the table hasn't been joined to my raster layer.

Anyone know what the problem could be?

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How does the ObjectID field relate to your raster grid (cell values)? I think you need to provide a bit more detail. –  Czed Mar 14 '13 at 14:29
    
Most rasters don't have a unique ObjectID field (e.g., multiple cells can have the same ID/value). Arc will often not do a join (without throwing an error) if the join field isn't unique in both the original and joined tables. –  Erica Mar 14 '13 at 23:49
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