添加 2 色标和 3 色标条件格式

2色标和三色标尺条件格式以相同的方式添加，不同之处在于FormatCondition.ColorScale.Is3ColorScale财产。这个属性是错误的对于 2 色标和真的用于 3 色标度条件格式。

以下示例代码添加了 2 色和 3 色比例条件格式。它生成输出excel文件.

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

// Create workbook
Workbook workbook = new Workbook();

// Access first worksheet
Worksheet worksheet = workbook.Worksheets[0];

// Add some data in cells
worksheet.Cells["A1"].PutValue("2-Color Scale");
worksheet.Cells["D1"].PutValue("3-Color Scale");

for (int i = 2; i <= 15; i++)
{
    worksheet.Cells["A" + i].PutValue(i);
    worksheet.Cells["D" + i].PutValue(i);
}

// Adding 2-Color Scale Conditional Formatting
CellArea ca = CellArea.CreateCellArea("A2", "A15");

int idx = worksheet.ConditionalFormattings.Add();
FormatConditionCollection fcc = worksheet.ConditionalFormattings[idx];
fcc.AddCondition(FormatConditionType.ColorScale);
fcc.AddArea(ca);

FormatCondition fc = worksheet.ConditionalFormattings[idx][0];
fc.ColorScale.Is3ColorScale = false;
fc.ColorScale.MaxColor = Color.LightBlue;
fc.ColorScale.MinColor = Color.LightGreen;

// Adding 3-Color Scale Conditional Formatting
ca = CellArea.CreateCellArea("D2", "D15");

idx = worksheet.ConditionalFormattings.Add();
fcc = worksheet.ConditionalFormattings[idx];
fcc.AddCondition(FormatConditionType.ColorScale);
fcc.AddArea(ca);

fc = worksheet.ConditionalFormattings[idx][0];
fc.ColorScale.Is3ColorScale = true;
fc.ColorScale.MaxColor = Color.LightBlue;
fc.ColorScale.MidColor = Color.Yellow;
fc.ColorScale.MinColor = Color.LightGreen;

// Save the workbook
workbook.Save(dataDir + "output_out.xlsx");