>>>Suppose I have a grid that's running off of a table. The grid displays 4 fields across from this table. When the third field is TRUE for particular line, I want this line of the grid to be disabled. How do I do this?
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>>Only the ActiveRow or all diplayed rows with the third field TRUE?
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>>Take a look at the Grid's DynamicCurrentControl property. It could be used to do what you want. It does cost some performance - The expression is evaluated for every row showing in the grid everytime the grid refreshs.
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>It's a grid's column property. It's not per row but per column control. The usage of which is how to interchange controls in a column.

The sentence: When the third field is TRUE for particular line, I want this line of the grid to be disabled.

To me reads : When the third field (column) for a particular line (row) is TRUE I want to disable the line (row) of the grid disabled.

Either way the DynamicCurrentControl property will do the trick.

Bill