Adding 2-Color Scale and 3-Color Scale Conditional Formattings

2-Color Scale and 3-Color Scale Conditional Formattings are added in the same way except they are differed by FormatCondition.ColorScale.Is3ColorScale property. This property is false for 2-Color Scale and true for 3-Color Scale Conditional Formattings.

The following sample code adds 2-Color and 3-Color Scale Conditional Formattings. It generates the output excel file.

// 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");