Added HtmlService

Author: DavidSuescunPelegay

src/jQueryDatatableServerSideNetCore/Controllers/TestRegistersController.cs

@@ -140,22 +140,23 @@ public async Task<IActionResult> ExportTable([FromQuery] string format, [FromFor
 
             var resultList = await result.ToListAsync();
 
-            byte[] dataByteArray;
-
             switch (format)
             {
                 case ExportFormat.Excel:
-                    dataByteArray = await _exportService.ExportToExcel(resultList);
-
                     return File(
-                        dataByteArray,
+                        await _exportService.ExportToExcel(resultList),
                         "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
                         "data.xlsx");
 
                 case ExportFormat.Csv:
-                    dataByteArray = _exportService.ExportToCsv(resultList);
-
-                    return File(dataByteArray, "application/csv", "data.csv");
+                    return File(_exportService.ExportToCsv(resultList),
+                        "application/csv",
+                        "data.csv");
+
+                case ExportFormat.Html:
+                    return File(_exportService.ExportToHtml(resultList),
+                        "application/csv",
+                        "data.html");
             }
 
             return null;

src/jQueryDatatableServerSideNetCore/Data/ExportFormat.cs

@@ -10,5 +10,6 @@ public class ExportFormat
         public const string Excel = "excel";
         public const string Csv = "csv";
         public const string CsvDelimiter = ",";
+        public const string Html = "html";
     }
 }

src/jQueryDatatableServerSideNetCore/Program.cs

@@ -2,6 +2,7 @@
 using jQueryDatatableServerSideNetCore.Services.CsvService;
 using jQueryDatatableServerSideNetCore.Services.ExcelService;
 using jQueryDatatableServerSideNetCore.Services.ExportService;
+using jQueryDatatableServerSideNetCore.Services.HtmlService;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.OpenApi.Models;
@@ -27,6 +28,7 @@
 builder.Services.AddScoped<IExportService, ExportService>();
 builder.Services.AddScoped<IExcelService, ExcelService>();
 builder.Services.AddScoped<ICsvService, CsvService>();
+builder.Services.AddScoped<IHtmlService, HtmlService>();
 
 // Register the Swagger generator, defining 1 or more Swagger documents
 builder.Services.AddSwaggerGen(c =>

src/jQueryDatatableServerSideNetCore/Services/ExportService/ExportService.cs

@@ -1,6 +1,7 @@
 using jQueryDatatableServerSideNetCore.Models.DatabaseModels;
 using jQueryDatatableServerSideNetCore.Services.CsvService;
 using jQueryDatatableServerSideNetCore.Services.ExcelService;
+using jQueryDatatableServerSideNetCore.Services.HtmlService;
 using System.Text;
 
 namespace jQueryDatatableServerSideNetCore.Services.ExportService
@@ -9,11 +10,13 @@ public class ExportService : IExportService
     {
         private readonly IExcelService _excelService;
         private readonly ICsvService _csvService;
+        private readonly IHtmlService _htmlService;
 
-        public ExportService(IExcelService excelService, ICsvService csvService)
+        public ExportService(IExcelService excelService, ICsvService csvService, IHtmlService htmlService)
         {
             _excelService = excelService;
             _csvService = csvService;
+            _htmlService = htmlService;
         }
 
         public async Task<byte[]> ExportToExcel(List<TestRegister> registers)
@@ -26,5 +29,9 @@ public byte[] ExportToCsv(List<TestRegister> registers)
             return _csvService.Write(registers);
         }
 
+        public byte[] ExportToHtml(List<TestRegister> registers)
+        {
+            return _htmlService.Write(registers);
+        }
     }
 }

src/jQueryDatatableServerSideNetCore/Services/ExportService/IExportService.cs

@@ -10,5 +10,7 @@ public interface IExportService
         Task<byte[]> ExportToExcel(List<TestRegister> registers);
 
         byte[] ExportToCsv(List<TestRegister> registers);
+
+        byte[] ExportToHtml(List<TestRegister> registers);
     }
 }

src/jQueryDatatableServerSideNetCore/Services/HtmlService/HtmlService.cs

@@ -0,0 +1,59 @@
+using System.ComponentModel.DataAnnotations;
+using System.Reflection;
+using System.Text;
+
+namespace jQueryDatatableServerSideNetCore.Services.HtmlService
+{
+    public class HtmlService : IHtmlService
+    {
+        public byte[] Write<T>(IList<T> registers)
+        {
+            StringBuilder sb = new StringBuilder();
+            
+            sb.Append("<table>\n");
+            sb.Append("\t<thead>\n");
+            sb.Append("\t\t<tr>\n");
+
+            Type type = typeof(T);
+            PropertyInfo[] properties = type.GetProperties();
+
+            for (var i = 0; i < properties.Length; i++)
+            {
+                string value = properties[i].Name;
+
+                var attribute = properties[i].GetCustomAttribute(typeof(DisplayAttribute));
+                if (attribute != null)
+                {
+                    value = (attribute as DisplayAttribute).Name;
+                }
+
+                sb.Append("\t\t\t<td>");
+                sb.Append(value);
+                sb.Append("</td>\n");
+            }
+
+            sb.Append("\t\t</tr>\n");
+            sb.Append("\t</thead>\n");
+            sb.Append("\t<tbody>\n");
+
+            foreach (var register in registers)
+            {
+                sb.Append("\t\t<tr>\n");
+
+                for (var i = 0; i < properties.Length; i++)
+                {
+                    sb.Append("\t\t\t<td>");
+                    sb.Append(properties[i].GetValue(register, null));
+                    sb.Append("</td>\n");
+                }
+                    
+                sb.Append("\t\t</tr>\n");
+            }
+
+            sb.Append("\t</tbody>\n");
+            sb.Append("</table>");
+
+            return Encoding.ASCII.GetBytes(sb.ToString());
+        }
+    }
+}

src/jQueryDatatableServerSideNetCore/Services/HtmlService/IHtmlService.cs

@@ -0,0 +1,7 @@
+namespace jQueryDatatableServerSideNetCore.Services.HtmlService
+{
+    public interface IHtmlService
+    {
+        byte[] Write<T>(IList<T> registers);
+    }
+}

src/jQueryDatatableServerSideNetCore/wwwroot/js/app.js

@@ -27,6 +27,12 @@ $(document).ready(function () {
                 action: function () {
                     exportToCsv();
                 }
+            },
+            {
+                text: 'HTML',
+                action: function () {
+                    exportToHtml();
+                }
             }
         ],
         // Searching Setups
@@ -135,5 +141,11 @@ function exportToExcel() {
 function exportToCsv() {
     renderDownloadForm("csv");
 
+    $("#export-to-file-form").submit();
+}
+
+function exportToHtml() {
+    renderDownloadForm("html");
+
     $("#export-to-file-form").submit();
 }