1. Added the samples

2. Updated ReadMe with 6 methods of exporting data to Excel

Author: johnsonmonohar

Export-Array-to-Excel/.vs/Array-to-Excel/DesignTimeBuild/.dtbcache

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.28307.168
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Export-Array-to-Excel", "Export-Array-to-Excel\Export-Array-to-Excel.csproj", "{ADBF6C2A-CB8D-4D03-AB01-702ECD65E8E0}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{ADBF6C2A-CB8D-4D03-AB01-702ECD65E8E0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{ADBF6C2A-CB8D-4D03-AB01-702ECD65E8E0}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{ADBF6C2A-CB8D-4D03-AB01-702ECD65E8E0}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{ADBF6C2A-CB8D-4D03-AB01-702ECD65E8E0}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {9F9BF09D-D5CC-4ED4-9763-C3F244AD5E99}
+	EndGlobalSection
+EndGlobal

Export-Array-to-Excel/.vs/Export-Array-to-Excel/DesignTimeBuild/.dtbcache

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Syncfusion.XlsIO.Net.Core" Version="17.1.0.38" />
+  </ItemGroup>
+
+</Project>

Export-Array-to-Excel/.vs/Export-Array-to-Excel/v15/Server/sqlite3/db.lock

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+using Syncfusion. XlsIO;
+using System;
+using System.IO;
+
+namespace ImportFromArray
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+             try
+            {
+                using (ExcelEngine excelEngine = new ExcelEngine())
+                {
+                    IApplication application = excelEngine.Excel;
+                    application.DefaultVersion = ExcelVersion.Excel2016;
+
+                    //Reads input Excel stream as a workbook
+                    IWorkbook workbook = application.Workbooks.Open(File.OpenRead(Path.GetFullPath(@"../../../Expenses.xlsx")));
+                    IWorksheet sheet = workbook.Worksheets[0];
+
+                    //Preparing first array with different data types
+                    object[] expenseArray = new object[14]
+                    {"Paul Pogba", 469.00d, 263.00d, 131.00d, 139.00d, 474.00d, 253.00d, 467.00d, 142.00d, 417.00d, 324.00d, 328.00d, 497.00d, "=SUM(B11:M11)"};
+
+                    //Inserting a new row by formatting as a previous row.
+                    sheet.InsertRow(11, 1, ExcelInsertOptions.FormatAsBefore);
+
+                    //Import Peter's expenses and fill it horizontally
+                    sheet.ImportArray(expenseArray, 11, 1, false);
+
+                    //Preparing second array with double data type
+                    double[] expensesOnDec = new double[6]
+                    {179.00d, 298.00d, 484.00d, 145.00d, 20.00d, 497.00d};
+
+                    //Modify the December month's expenses and import it vertically
+                    sheet.ImportArray(expensesOnDec, 6, 13, true);
+
+                    //Save the file in the given path
+                    Stream excelStream = File.Create(Path.GetFullPath(@"Output.xlsx"));
+                    workbook.SaveAs(excelStream);
+                    excelStream.Dispose();
+                }
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine("Unexpected Exception:"+e.Message);
+            }
+        }
+    }
+}

Export-Array-to-Excel/.vs/Export-Array-to-Excel/v15/Server/sqlite3/storage.ide

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.28307.168
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Export-CSV-to-Excel", "Export-CSV-to-Excel\Export-CSV-to-Excel.csproj", "{2FB159E0-C43B-4B88-BAF1-9030DF5A0195}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{2FB159E0-C43B-4B88-BAF1-9030DF5A0195}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{2FB159E0-C43B-4B88-BAF1-9030DF5A0195}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{2FB159E0-C43B-4B88-BAF1-9030DF5A0195}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{2FB159E0-C43B-4B88-BAF1-9030DF5A0195}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {EA68AB82-33F1-4E03-90A7-730AAB8EDD3F}
+	EndGlobalSection
+EndGlobal

Export-Array-to-Excel/.vs/Export-Array-to-Excel/v15/Server/sqlite3/storage.ide-shm

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Syncfusion.XlsIO.Net.Core" Version="17.1.0.38" />
+  </ItemGroup>
+
+</Project>

Export-Array-to-Excel/.vs/Export-Array-to-Excel/v15/Server/sqlite3/storage.ide-wal

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+using Syncfusion. XlsIO;
+using System;
+using System. IO;
+using System.Linq;
+namespace ImportFromCSV
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            try
+            {
+                using (ExcelEngine excelEngine = new ExcelEngine())
+                {
+                    IApplication application = excelEngine.Excel;
+                    application.DefaultVersion = ExcelVersion.Excel2016;
+
+                    //Preserve data types as per the value
+                    application.PreserveCSVDataTypes = true;
+
+                    //Read the CSV file
+                    Stream csvStream = File.OpenRead(Path.GetFullPath(@"../../../TemplateSales.csv")); ;
+
+                    //Reads CSV stream as a workbook
+                    IWorkbook workbook = application.Workbooks.Open(csvStream);
+                    IWorksheet sheet = workbook.Worksheets[0];
+
+                    //Formatting the CSV data as a Table 
+                    IListObject table = sheet.ListObjects.Create("SalesTable", sheet.UsedRange);
+                    table.BuiltInTableStyle =  TableBuiltInStyles.TableStyleMedium6;
+                    IRange location = table.Location;
+                    location.AutofitColumns();
+
+                    //Apply the proper latitude & longitude numerformat in the table
+                    TryAndUpdateGeoLocation(table,"Latitude");
+                    TryAndUpdateGeoLocation(table,"Longitude");
+
+                    //Apply currency numberformat in the table column 'Price'
+                    IRange columnRange = GetListObjectColumnRange(table,"Price");
+                    if(columnRange != null)
+                        columnRange.CellStyle.NumberFormat = "$#,##0.00";
+
+                    //Apply Date time numberformat in the table column 'Transaction_date'
+                    columnRange = GetListObjectColumnRange(table,"Transaction_date");
+                    if(columnRange != null)
+                        columnRange.CellStyle.NumberFormat = "m/d/yy h:mm AM/PM;@";
+
+                    //Sort the data based on 'Products'
+                    IDataSort sorter = table.AutoFilters.DataSorter;
+                    ISortField sortField = sorter. SortFields. Add(0, SortOn. Values, OrderBy. Ascending);
+                    sorter. Sort();
+
+                    //Save the file in the given path
+                    Stream excelStream;
+                    excelStream = File.Create(Path.GetFullPath(@"../../../Output.xlsx"));
+                    workbook.SaveAs(excelStream);
+                    excelStream.Dispose();
+                }
+            }
+            catch(Exception e)
+            {
+                Console.WriteLine("Unexpected Exception:"+e.Message);
+            }
+        }
+
+        private static void TryAndUpdateGeoLocation(IListObject table, string unitString)
+        {
+            IRange columnRange = GetListObjectColumnRange(table, unitString);
+            if(columnRange == null) return;
+            columnRange.Worksheet.EnableSheetCalculations();
+            foreach(IRange range in columnRange.Cells)
+            {
+                string currentValue = range.Value;
+                range.Value2 = "=TEXT(TRUNC("+currentValue+"), \"0\" & CHAR(176) & \" \") &" +
+                    " TEXT(INT((ABS("+currentValue+")- INT(ABS("+currentValue+")))*60), \"0' \") " +
+                    "& TEXT(((((ABS("+currentValue+")-INT(ABS("+currentValue+")))*60)-" +
+                    " INT((ABS("+currentValue+") - INT(ABS("+currentValue+")))*60))*60), \" 0''\")";
+            }
+        }
+
+        private static IRange GetListObjectColumnRange(IListObject table, string name)
+        {
+            IListObjectColumn column = table.Columns.FirstOrDefault(x=> x.Name.Contains(name, StringComparison.InvariantCultureIgnoreCase));
+            if(column!=null)
+            {
+                IRange location = table.Location;
+                return location.Worksheet[location.Row+1, location.Column + column.Index - 1, location.LastRow, location.Column + column.Index - 1 ];
+            }
+            else
+                return null;
+        }
+    }
+}