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      How to: Format Cell Values that are Above or Below the Average
      How to: Format Cells that are Between or Not Between Two Values
      How to: Format Top or Bottom Ranked Values
      How to: Format Cells based on the Text in the Cell
      How to: Format Unique or Duplicate Values, Blank Cells and Formula Errors
      How to: Format Cells that Contain Dates
      How to: Format Cells that are Less than, Greater than or Equal to a Value
      How to: Use a Formula to Determine which Cells to Format
      How to: Format Cells Using a Two-Color Scale
      How to: Format Cells Using a Three-Color Scale
      How to: Format Cells Using Data Bars
      How to: Format Cells Using Icon Sets
      How to: Apply Conditional Formatting to a Complex Range
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 End-User Documentation

How to: Format Unique or Duplicate Values, Blank Cells and Formula Errors

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A complete sample project is available in the DevExpress Code Examples database at http://www.devexpress.com/example=E4929.

This example demonstrates how to specify the rule that highlights unique or duplicate values, formula errors, etc.

  1. To create a new conditional formatting rule represented by the SpecialConditionalFormatting object, access the collection of conditional formats from the Worksheet.ConditionalFormattings property and call the ConditionalFormattingCollection.AddSpecialConditionalFormatting method. Pass the following parameters:

  2. Specify formatting options to be applied to cells if the condition is true, using the ISupportsFormatting.Formatting property of the SpecialConditionalFormatting object.

To remove the SpecialConditionalFormatting object, use the ConditionalFormattingCollection.Remove, ConditionalFormattingCollection.RemoveAt or ConditionalFormattingCollection.Clear methods.

The image below shows the result. Unique values in the list of authors are highlighted in yellow.

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