This sample illustrates how to display a calculated value in a column.

Set the ControlSource property of the column to an expression with a calculation. For example, the following expression for the ControlSource of the Profit column displays the difference between the price and cost.

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Products.Unit_Price - Products.Unit_Cost

When you change one or more values in the expression, the value in the column is automatically updated.

Note:
Columns that display an expression containing a calculation are read-only.