C# 填充Excel图表、图例背景色的实例代码

//实例化Workbook类的对象
Workbook workbook = new Workbook();
//加载测试文档
workbook.LoadFromFile("sample.xlsx");

//获取第一个工作表中的第一个图表
Worksheet ws = workbook.Worksheets[1];
Chart chart = ws.Charts[0];

 //设置图表的背景填充色（纯色）
 chart.ChartArea.Fill.ForeColor = Color.LightSkyBlue;
 ////设置图表绘图区域的背景填充色（纯色）
 ///chart.PlotArea.ForeGroundColor =System.Drawing.Color.LightYellow;

// 加载图片，填充整个图表区域
chart.ChartArea.Fill.CustomPicture(Image.FromFile("tp.png"), "None");
//设置绘图区域的图片填充的透明度
chart.PlotArea.Fill.Transparency = 0.8;
////加载图片，仅填充图表中的绘图区域
//chart.PlotArea.Fill.CustomPicture(Image.FromFile("tp.png"), "None");

workbook.SaveToFile("result.xlsx", ExcelVersion.Version2010);

using Spire.Xls;
using Spire.Xls.Core.Spreadsheet.Charts;
using System.Drawing;
namespace FillChartWithImg_XLS
{
 class Program
 {
 static void Main(string[] args)
 {
 //实例化Workbook类的对象
 Workbook workbook = new Workbook();
 //加载测试文档
 workbook.LoadFromFile("sample.xlsx");
 //获取第一个工作表中的第一个图表
 Worksheet ws = workbook.Worksheets[1];
 Chart chart = ws.Charts[0];
 //设置图表的背景填充色（纯色）
 chart.ChartArea.Fill.ForeColor = Color.LightSkyBlue;
 //设置图表绘图区域的背景填充色（纯色）
 //chart.PlotArea.ForeGroundColor = System.Drawing.Color.LightYellow;
 //// 加载图片，填充整个图表区域
 //chart.ChartArea.Fill.CustomPicture(Image.FromFile("tp.png"), "None");
 ////设置绘图区域的图片填充的透明度
 //chart.PlotArea.Fill.Transparency = 0.8;
 ////加载图片，仅填充图表中的绘图区域
 //chart.PlotArea.Fill.CustomPicture(Image.FromFile("tp.png"), "None"); 
 //保存文档
 workbook.SaveToFile("result3.xlsx", ExcelVersion.Version2010);
 System.Diagnostics.Process.Start("result3.xlsx"); 
 }
 }
}

//实例化Workbook类的对象，并加载测试文档
Workbook workbook = new Workbook();
workbook.LoadFromFile("test.xlsx");

//获取工作表中的第一个图表
Worksheet ws = workbook.Worksheets[0];
Spire.Xls.Chart chart = ws.Charts[0];

//填充图例背景色
XlsChartFrameFormat x = chart.Legend.FrameFormat as XlsChartFrameFormat;
//单色填充
x.Fill.FillType = ShapeFillType.SolidColor;
x.ForeGroundColor = Color.Gainsboro;

//渐变色填充
x.Fill.FillType = ShapeFillType.Gradient;
x.ForeGroundColor = Color.AliceBlue;
x.BackGroundColor = Color.Bisque;

//纹理填充
x.Fill.FillType = ShapeFillType.Texture;
x.Fill.Texture = GradientTextureType.Bouquet;

//图片填充
x.Fill.CustomPicture("img.png");

workbook.SaveToFile("output.xlsx", ExcelVersion.Version2010);

using Spire.Xls;
using Spire.Xls.Charts;
using Spire.Xls.Core.Spreadsheet.Charts;
using System.Drawing;
namespace SetFontOfLegendInChart_XLS
{
 class Program
 {
 static void Main(string[] args)
 {
 //实例化Workbook类的对象，并加载测试文档
 Workbook workbook = new Workbook();
 workbook.LoadFromFile("test.xlsx");
 //获取工作表中的第一个图表
 Worksheet ws = workbook.Worksheets[0];
 Spire.Xls.Chart chart = ws.Charts[0];
 //填充图例背景色
 XlsChartFrameFormat x = chart.Legend.FrameFormat as XlsChartFrameFormat;
 //单色填充
 x.Fill.FillType = ShapeFillType.SolidColor;
 x.ForeGroundColor = Color.Gainsboro;
 ////渐变色填充
 //x.Fill.FillType = ShapeFillType.Gradient;
 //x.ForeGroundColor = Color.AliceBlue;
 //x.BackGroundColor = Color.Bisque;
 ////纹理填充
 //x.Fill.FillType = ShapeFillType.Texture;
 //x.Fill.Texture = GradientTextureType.Bouquet;
 ////图片填充
 //x.Fill.CustomPicture("img.png");
 //保存文档
 workbook.SaveToFile("output.xlsx", ExcelVersion.Version2010);
 System.Diagnostics.Process.Start("output.xlsx");
 }
 }
}