在我們平時的Excel操作中，條件格式是一個比較先進的應用。

在本例中，我們將實現:當“A1”這個單元格的值介于50到100的時，Aspose.Cells運用條件格式為此單元格添加紅色背景色。運行代碼如下：

[C#]

 //Instantiating a Workbook object
Workbook workbook = new Workbook();

Worksheet sheet = workbook.Worksheets[0];

//Adds an empty conditional formatting
int index = sheet.ConditionalFormattings.Add();

FormatConditionCollection fcs =

sheet.ConditionalFormattings[index];

//Sets the conditional format range.
CellArea ca = new CellArea();

ca.StartRow = 0;

ca.EndRow = 0;

ca.StartColumn = 0;

ca.EndColumn = 0;

fcs.AddArea(ca);

//Adds condition.
int conditionIndex = fcs.AddCondition

(FormatConditionType.CellValue, OperatorType.Between, "50",

"100");

//Sets the background color.
FormatCondition fc = fcs[conditionIndex];

fc.Style.BackgroundColor = Color.Red;

//Saving the Excel file
workbook.Save("C:\\output.xls", FileFormatType.Default);
  Additionally I wrote its parallel VB.NET code here for

your convenience:

[VB]

 'Instantiating a Workbook object
Dim workbook As Workbook = New Workbook()

Dim sheet As Worksheet = workbook.Worksheets(0)

' Adds an empty conditional formatting
Dim index As Integer = sheet.ConditionalFormattings.Add()

Dim fcs As FormatConditionCollection =

sheet.ConditionalFormattings(index)

'Sets the conditional format range.
Dim ca As CellArea = New CellArea()

ca.StartRow = 0

ca.EndRow = 0

ca.StartColumn = 0

ca.EndColumn = 0

fcs.AddArea(ca)

'Adds condition.
Dim conditionIndex As Integer = fcs.AddCondition

(FormatConditionType.CellValue, OperatorType.Between, "50",

"100")

'Sets the background color.
Dim fc As FormatCondition = fcs(conditionIndex)

fc.Style.BackgroundColor = Color.Red

'Saving the Excel file
workbook.Save("C:\\output.xls", FileFormatType.Default)

代碼運行后的效果圖如下：

當“A1”的值小于50時：

當“A1”的值介于50和100之間時：