How to: Format Top or Bottom Ranked Values

• Jun 07, 2019
• 2 minutes to read

This example demonstrates how to apply a "top/bottom N" conditional formatting rule.

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

   • A CellRange object that defines a range of cells to which the rule is applied.
   • A condition specified by one of the ConditionalFormattingRankCondition enumeration values.
   • A positive integer value representing the number or percentage of the rank value.
2. Specify formatting options to be applied to cells if the condition is true, using the ISupportsFormatting.Formatting property of the RankConditionalFormatting object. Define the background and font colors, and set the outline borders.

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

View Example

ConditionalFormattingAction.vb

' Create the rule to identify top three values in cells F2 through F15.
Dim cfRule As RankConditionalFormatting = worksheet.ConditionalFormattings.AddRankConditionalFormatting(worksheet.Range("$F$2:$F$15"), ConditionalFormattingRankCondition.TopByRank, 3)
' Specify formatting options to be applied to cells if the condition is true.
' Set the background color to dark orchid.
cfRule.Formatting.Fill.BackgroundColor = Color.DarkOrchid
' Set the outline borders.
cfRule.Formatting.Borders.SetOutsideBorders(Color.Black, BorderLineStyle.Thin)
' Set the font color to white.
cfRule.Formatting.Font.Color = Color.White

ConditionalFormatting.cs

// Create the rule to identify top three values in cells F2 through F15.
RankConditionalFormatting cfRule = worksheet.ConditionalFormattings.AddRankConditionalFormatting(worksheet.Range["$F$2:$F$15"], ConditionalFormattingRankCondition.TopByRank, 3);
// Specify formatting options to be applied to cells if the condition is true.
// Set the background color to dark orchid.
cfRule.Formatting.Fill.BackgroundColor = Color.DarkOrchid;
// Set the outline borders.
cfRule.Formatting.Borders.SetOutsideBorders(Color.Black, BorderLineStyle.Thin);
// Set the font color to white.
cfRule.Formatting.Font.Color = Color.White;