Represents a conditional formatting rule that uses a formula as a formatting criteria.
The conditional formatting rule specified by the FormulaExpressionConditionalFormatting object contains a formula to be evaluated. When the formula result is true, the cell is highlighted. The Worksheet.ConditionalFormattings property returns the ConditionalFormattingCollection collection that stores all conditional formatting rules specified on a worksheet. Use the methods of the ConditionalFormattingCollection object to apply (the ConditionalFormattingCollection.AddFormulaExpressionConditionalFormatting method) or remove (the ConditionalFormattingCollection.Remove method) the conditional format.
This example demonstrates how to create the rule that uses a formula as a criterion to apply a conditional format.
To create a new conditional formatting rule represented by the FormulaExpressionConditionalFormatting object, access the collection of conditional formats from the Worksheet.ConditionalFormattings property and call the ConditionalFormattingCollection.AddFormulaExpressionConditionalFormatting method. Pass the following parameters:
- A CellRange object that defines a range of cells to which the rule is applied.
- A string value that determines a formula to evaluate.
- Specify formatting options to be applied to cells if the condition is true, using the ISupportsFormatting.Formatting property of the FormulaExpressionConditionalFormatting object.
A complete sample project is available at https://github.com/DevExpress-Examples/how-to-apply-conditional-formatting-to-a-range-of-cells-e4929
' Create the rule to shade alternate rows without applying a new style. Dim cfRule As FormulaExpressionConditionalFormatting = worksheet.ConditionalFormattings.AddFormulaExpressionConditionalFormatting(worksheet.Range("$A$2:$G$15"), "=MOD(ROW(),2)=1") ' Specify formatting options to be applied to cells if the condition is true. ' Set the background color to light blue. cfRule.Formatting.Fill.BackgroundColor = Color.FromArgb(255, &HBC, &HDA, &HF7)