c# EPPlus秘籍之Excel实现图表导出
作者：谭广健
这篇文章主要为大家介绍了c# EPPlus秘籍之Excel实现图表导出示例详解,有需要的朋友可以借鉴参考下,希望能够有所帮助,祝大家多多进步,早日升职加薪
引言
之前受某大神推荐使用EPPlus作为excel之控件，简直如获一宝，大数据导出将不再麻烦，服务器也不必再安装烦人的office控件.简单易用更重要不用破解什么的。
大数据导出测试
今天测试了２点，一个是大数据导出测试５Ｗ简直没压力。
代码如下
FileInfo newFile = new FileInfo(@"c:\test1.xlsx");
if (newFile.Exists)
{
newFile.Delete();
newFile = new FileInfo(@"c:\test.xlsx");
}
using (ExcelPackage package = new ExcelPackage(newFile))
{
ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("test");
for (int i = 1; i <= 50000; i++)
{
for (int j = 1; j <= 20; j++)
{
worksheet.Cells[i, j].Value = i + "|" + j;
}
}
package.Save();
MessageBox.Show("ok");
}
于是再测试一下有什么特殊功能，发现有一个图表导出功能也很不错，分享代码如下：
ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("test");
worksheet.Cells.Style.WrapText = true;
worksheet.View.ShowGridLines = false;//去掉sheet的网格线
worksheet.Cells[1, 1].Value = "名称";
worksheet.Cells[1, 2].Value = "价格";
worksheet.Cells[1, 3].Value = "销量";
worksheet.Cells[2, 1].Value = "大米";
worksheet.Cells[2, 2].Value = 56;
worksheet.Cells[2, 3].Value = 100;
worksheet.Cells[3, 1].Value = "玉米";
worksheet.Cells[3, 2].Value = 45;
worksheet.Cells[3, 3].Value = 150;
worksheet.Cells[4, 1].Value = "小米";
worksheet.Cells[4, 2].Value = 38;
worksheet.Cells[4, 3].Value = 130;
worksheet.Cells[5, 1].Value = "糯米";
worksheet.Cells[5, 2].Value = 22;
worksheet.Cells[5, 3].Value = 200;
using (ExcelRange range = worksheet.Cells[1, 1, 5, 3])
{
range.Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
range.Style.VerticalAlignment = ExcelVerticalAlignment.Center;
}
using (ExcelRange range = worksheet.Cells[1, 1, 1, 3])
{
range.Style.Font.Bold = true;
range.Style.Font.Color.SetColor(Color.White);
range.Style.Font.Name = "微软雅黑";
range.Style.Font.Size = 12;
range.Style.Fill.PatternType = ExcelFillStyle.Solid;
range.Style.Fill.BackgroundColor.SetColor(Color.FromArgb(128, 128, 128));
}
worksheet.Cells[1, 1].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
worksheet.Cells[1, 2].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
worksheet.Cells[1, 3].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
worksheet.Cells[2, 1].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
worksheet.Cells[2, 2].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
worksheet.Cells[2, 3].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
worksheet.Cells[3, 1].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
worksheet.Cells[3, 2].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
worksheet.Cells[3, 3].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
worksheet.Cells[4, 1].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
worksheet.Cells[4, 2].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
worksheet.Cells[4, 3].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
worksheet.Cells[5, 1].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
worksheet.Cells[5, 2].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
worksheet.Cells[5, 3].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
ExcelChart chart = worksheet.Drawings.AddChart("chart", eChartType.ColumnClustered);
//eChartType中可以选择图表类型
ExcelChartSerie serie = chart.Series.Add(worksheet.Cells[2, 3, 5, 3], worksheet.Cells[2, 1, 5, 1]);
//设置图表的x轴和y轴
serie.HeaderAddress = worksheet.Cells[1, 3];//设置图表的图例
chart.SetPosition(150, 10);//设置位置
chart.SetSize(500, 300);//设置大小
chart.Title.Text = "销量走势";//设置图表的标题
chart.Title.Font.Color = Color.FromArgb(89, 89, 89);//设置标题的颜色
chart.Title.Font.Size = 15;//标题的大小
chart.Title.Font.Bold = true;//标题的粗体
chart.Style = eChartStyle.Style15;//设置图表的样式
chart.Legend.Border.LineStyle = eLineStyle.Solid;
chart.Legend.Border.Fill.Color = Color.FromArgb(217, 217, 217);//设置图例的样式效果
如下：
将图片导入到excel
还有可以将图片导入到excel中去，代码如下：
ExcelPicture picture = worksheet.Drawings.AddPicture("logo", Image.FromFile(@"c:\QQ截图20190403205944.jpg"));//插入图片
picture.SetPosition(100, 100);//设置图片的位置
picture.SetSize(100, 100);//设置图片的大小多个excel的权限
在最后弄多个excel的权限，加入后修改是需要口令的。
worksheet.Protection.IsProtected = true;//设置是否进行锁定
worksheet.Protection.SetPassword("ABC");//设置密码
worksheet.Protection.AllowAutoFilter = false;//下面是一些锁定时权限的设置
worksheet.Protection.AllowDeleteColumns = false;
worksheet.Protection.AllowDeleteRows = false;
worksheet.Protection.AllowEditScenarios = false;
worksheet.Protection.AllowEditObject = false;
worksheet.Protection.AllowFormatCells = false;
worksheet.Protection.AllowFormatColumns = false;
worksheet.Protection.AllowFormatRows = false;
worksheet.Protection.AllowInsertColumns = false;
worksheet.Protection.AllowInsertHyperlinks = false;
worksheet.Protection.AllowInsertRows = false;
worksheet.Protection.AllowPivotTables = false;
worksheet.Protection.AllowSelectLockedCells = false;
worksheet.Protection.AllowSelectUnlockedCells = false;
worksheet.Protection.AllowSort = false;加入excel的描述
还有一个秘籍，加入excel的描述：
epk.Workbook.Properties.Title = "excel的标题";//设置excel的标题 epk.Workbook.Properties.Author = "谭广健";//作者 epk.Workbook.Properties.Comments = "这是备注";//备注 epk.Workbook.Properties.Company = "公司版权啥的";//公司
通过SQL语句直接导出Excel
var db_data = ExecuteNonQuery("select * from SYS_LIST_SETTING", CommandType.Text);
DataSet ds = new DataSet();
ds.Tables.Add(db_data);
DataSetToExcel(ds, @"c:\test1.xlsx");
#region 读数据库
public static DataTable ExecuteNonQuery(String cmdText, CommandType ct)
{
DataTable dt = new DataTable();
using (SqlConnection conn = new SqlConnection(connectionString))
{
try
{
conn.Open();
using (SqlCommand cmd = new SqlCommand(cmdText, conn))
{
cmd.CommandType = ct;
using (SqlDataReader sdr = cmd.ExecuteReader(CommandBehavior.CloseConnection))
{
dt.Load(sdr);
}
}
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e.Message);
}
finally
{
if (conn.State == ConnectionState.Open)
{
conn.Close();
}
System.Diagnostics.Debug.WriteLine(dt.Rows.Count);
}
}
return dt;
}
#endregion
#region DataTable to Excel2007
private static void DataSetToExcel(DataSet dataSet, string filePath)
{
using (ExcelPackage pck = new ExcelPackage())
{
foreach (DataTable dataTable in dataSet.Tables)
{
ExcelWorksheet workSheet = pck.Workbook.Worksheets.Add(dataTable.TableName);
workSheet.Cells["A1"].LoadFromDataTable(dataTable, true);
}
pck.SaveAs(new FileInfo(filePath));
}
}
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