How to: Format Cells that are Less than, Greater than or Equal to a Value
- 2 minutes to read
This example demonstrates how to create the rule that uses a relational operator as a formatting criteria.
To create a new conditional formatting rule represented by the ExpressionConditionalFormatting object, access the collection of conditional formats from the Worksheet.ConditionalFormattings property and call the ConditionalFormattingCollection.AddExpressionConditionalFormatting method. Pass the following parameters:
- Specify formatting options to be applied to cells if the condition is true, using the ISupportsFormatting.Formatting property of the ExpressionConditionalFormatting object. Set the background and font colors.
// Create the rule to identify values that are above the average in cells F2 through F15. ExpressionConditionalFormatting cfRule = worksheet.ConditionalFormattings.AddExpressionConditionalFormatting(worksheet["$F$2:$F$15"], ConditionalFormattingExpressionCondition.GreaterThan, "=AVERAGE($F$2:$F$15)"); // Specify formatting options to be applied to cells if the condition is true. // Set the background color to yellow. cfRule.Formatting.Fill.BackgroundColor = Color.FromArgb(255, 0xFA, 0xF7, 0xAA); // Set the font color to red. cfRule.Formatting.Font.Color = Color.Red;
The image below shows the result (the workbook is opened in Microsoft® Excel®). Price values above the average are highlighted in yellow with red font.