SolidFill.Transparency

SolidFill.Transparency property

Returns or sets the degree of transparency of the area as a value from 0.0 (opaque) through 1.0 (clear).

public double Transparency { get; set; }

Examples

using System;
using Aspose.Cells;
using Aspose.Cells.Drawing;
using System.Drawing;

namespace AsposeCellsExamples
{
    public class SolidFillPropertyTransparencyDemo
    {
        public static void Run()
        {
            // Create a new workbook
            Workbook workbook = new Workbook();
            Worksheet worksheet = workbook.Worksheets[0];

            // Add a sample chart
            int chartIndex = worksheet.Charts.Add(Aspose.Cells.Charts.ChartType.Column, 5, 0, 20, 8);
            Aspose.Cells.Charts.Chart chart = worksheet.Charts[chartIndex];
            
            // Add sample data for the chart
            worksheet.Cells["A1"].PutValue("Category");
            worksheet.Cells["A2"].PutValue("A");
            worksheet.Cells["A3"].PutValue("B");
            worksheet.Cells["A4"].PutValue("C");
            worksheet.Cells["B1"].PutValue("Value");
            worksheet.Cells["B2"].PutValue(10);
            worksheet.Cells["B3"].PutValue(20);
            worksheet.Cells["B4"].PutValue(30);
            
            chart.NSeries.Add("B2:B4", true);
            chart.NSeries.CategoryData = "A2:A4";
            chart.Calculate();

            // Add a shape to demonstrate transparency
            Shape shape = chart.Shapes.AddShapeInChart(MsoDrawingType.Rectangle, PlacementType.FreeFloating, 
                1000, 1000, 2000, 2000);
            
            // Set solid fill with transparency
            shape.Fill.SolidFill.Color = Color.Blue;
            shape.Fill.SolidFill.Transparency = 0.5; // 50% transparent

            // Add another shape for comparison (fully opaque)
            Shape shape2 = chart.Shapes.AddShapeInChart(MsoDrawingType.Rectangle, PlacementType.FreeFloating, 
                3000, 1000, 2000, 2000);
            shape2.Fill.SolidFill.Color = Color.Blue;
            shape2.Fill.SolidFill.Transparency = 0; // 0% transparent (fully opaque)

            // Save the workbook
            workbook.Save("SolidFillTransparencyDemo.xlsx");
        }
    }
}

See Also