ASP.NET 开源导入导出库Magicodes.IE 导出Excel教程

要点

导出特性
如何导出Excel表头
如何导出数据、如何进行数据的切割、如何使用筛选器

导出特性

ExporterAttribute

Name：名称(当前Sheet 名称)
HeaderFontSize：头部字体大小
FontSize：正文字体大小
MaxRowNumberOnASheet：Sheet最大允许的行数，设置了之后将输出多个Sheet
TableStyle：表格样式风格
AutoFitAllColumn：bool 自适应所有列
Author：作者
ExporterHeaderFilter：头部筛选器

ExporterHeaderAttribute

DisplayName：显示名称
FontSize：字体大小
IsBold：是否加粗
Format：格式化
IsAutoFit：是否自适应
IsIgnore：是否忽略

主要步骤

1.安装包Magicodes.IE.Excel

Install-Package Magicodes.IE.Excel

2.导出Excel表头

通过数组导出

     public async Task ExportHeader()
        {
            IExporter exporter = new ExcelExporter();

            var filePath = "h.xlsx";
            var arr = new[] { "Name1", "Name2", "Name3", "Name4", "Name5", "Name6" };
            var sheetName = "Test";
            var result = await exporter.ExportHeaderAsByteArray(arr, sheetName);
            result.ToExcelExportFileInfo(filePath);

        }

通过DTO导出

        public async Task ExportHeader()
        {
            IExporter exporter = new ExcelExporter();

            var filePath = "h.xlsx";
            var result = await exporter.ExportHeaderAsByteArray<Student>( new Student());
            result.ToExcelExportFileInfo(filePath);

        }

3.导出Excel

基础导出

      
        public class Student
        {
            /// <summary>
            ///     姓名
            /// </summary>
            public string Name { get; set; }
            /// <summary>
            ///     年龄
            /// </summary>
            public int Age { get; set; }
        }

        public async Task Export()
        {
            IExporter exporter = new ExcelExporter();
            var result = await exporter.Export("a.xlsx", new List<Student>()
                {
                    new Student
                    {
                        Name = "MR.A",
                        Age = 18
                    },
                    new Student
                    {
                        Name = "MR.B",
                        Age = 19
                    },
                    new Student
                    {
                        Name = "MR.B",
                        Age = 20
                    }
                });
        }

通过如上代码我们可以将Excel导出，如下图所示

特性导出示例


        public async Task Export()
        {
            IExporter exporter = new ExcelExporter();
            var result = await exporter.Export("test.xlsx", new List<Student>()
                {
                    new Student
                    {
                        Name = "MR.A",
                        Age = 18,
                        Remarks = "我叫MR.A,今年18岁",
                        Birthday=DateTime.Now
                    },
                    new Student
                    {
                        Name = "MR.B",
                        Age = 19,
                        Remarks = "我叫MR.B,今年19岁",
                        Birthday=DateTime.Now
                    },
                    new Student
                    {
                        Name = "MR.C",
                        Age = 20,
                        Remarks = "我叫MR.C,今年20岁",
                        Birthday=DateTime.Now
                    }
                });
        }
        /// <summary>
        ///     学生信息
        /// </summary>
        [ExcelExporter(Name = "学生信息", TableStyle = "Light10", AutoFitAllColumn = true, MaxRowNumberOnASheet = 2))]
        public class Student
        {
            /// <summary>
            ///     姓名
            /// </summary>
            [ExporterHeader(DisplayName = "姓名")]
            public string Name { get; set; }
            /// <summary>
            ///     年龄
            /// </summary>
            [ExporterHeader(DisplayName = "年龄")]
            public int Age { get; set; }
            /// <summary>
            ///     备注
            /// </summary>
            public string Remarks { get; set; }
            /// <summary>
            ///     出生日期
            /// </summary>
            [ExporterHeader(DisplayName = "出生日期", Format = "yyyy-mm-DD")]
            public DateTime Birthday { get; set; }
        }

通过如上代码我们可以将Excel导出，如下图所示

ExcelExporter特性可以设置导出的全局设置,比如表格样式,Sheet名称,自适应列等等具体参照 导出特性
ExporterHeader特性我们可以对表头名称、样式等等进行设置具体参照 导出特性
ExcelExporter MaxRowNumberOnASheet 属性对数据进行拆分,通过该属性指定Sheet数据长度从而实现自动切割

表头筛选器

        /// <summary>
        ///     学生信息
        /// </summary>
        [ExcelExporter(Name = "学生信息", TableStyle = "Light10", AutoFitAllColumn = true, MaxRowNumberOnASheet = 2,ExporterHeaderFilter = typeof(ExporterStudentHeaderFilter))]
        public class Student
        {
            /// <summary>
            ///     姓名
            /// </summary>
            [ExporterHeader(DisplayName = "姓名")]
            public string Name { get; set; }
            /// <summary>
            ///     年龄
            /// </summary>
            [ExporterHeader(DisplayName = "年龄")]
            public int Age { get; set; }
            /// <summary>
            ///     备注
            /// </summary>
            public string Remarks { get; set; }
        }

        
        public class ExporterStudentHeaderFilter : IExporterHeaderFilter
        {
            /// <summary>
            /// 表头筛选器（修改名称）
            /// </summary>
            /// <param name="exporterHeaderInfo"></param>
            /// <returns></returns>
            public ExporterHeaderInfo Filter(ExporterHeaderInfo exporterHeaderInfo)
            {
                if (exporterHeaderInfo.DisplayName.Equals("姓名"))
                {
                    exporterHeaderInfo.DisplayName = "name";
                }
                return exporterHeaderInfo;
            }
        }