A few fixes related to numberparsing. Some work on the sampleproject.

EPPlus.Core.sln

@@ -1,14 +1,16 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.26730.3
+VisualStudioVersion = 15.0.27130.2003
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "EPPlus.MultiTarget", "EPPlus\EPPlus.MultiTarget.csproj", "{219F673E-6115-4858-9E07-E33D24E795FE}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "EPPlusTest.Core", "EPPlusTest\EPPlusTest.Core.csproj", "{78F198E4-B502-425D-BCC7-BF7F93B1EED9}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SampleApp.Core", "SampleApp.Core\SampleApp.Core.csproj", "{C2A2E62C-BDA3-4ABC-968F-82B51CA0BF0E}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SampleWebApp.Core", "SampleWebApp.Core\SampleWebApp.Core.csproj", "{8360994E-9BD1-4429-AFB6-B15AA96EB13B}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -34,6 +36,12 @@ Global
 		{C2A2E62C-BDA3-4ABC-968F-82B51CA0BF0E}.Release 4.0|Any CPU.Build.0 = Release|Any CPU
 		{C2A2E62C-BDA3-4ABC-968F-82B51CA0BF0E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{C2A2E62C-BDA3-4ABC-968F-82B51CA0BF0E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{8360994E-9BD1-4429-AFB6-B15AA96EB13B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8360994E-9BD1-4429-AFB6-B15AA96EB13B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8360994E-9BD1-4429-AFB6-B15AA96EB13B}.Release 4.0|Any CPU.ActiveCfg = Release|Any CPU
+		{8360994E-9BD1-4429-AFB6-B15AA96EB13B}.Release 4.0|Any CPU.Build.0 = Release|Any CPU
+		{8360994E-9BD1-4429-AFB6-B15AA96EB13B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8360994E-9BD1-4429-AFB6-B15AA96EB13B}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

EPPlus/DataValidation/Formulas/ExcelDataValidationFormulaDateTime.cs

@@ -47,7 +47,7 @@ public ExcelDataValidationFormulaDateTime(XmlNamespaceManager namespaceManager,
             if (!string.IsNullOrEmpty(value))
             {
                 double oADate = default(double);
-                if (double.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out oADate))
+                if (double.TryParse(value, NumberStyles.Number, CultureInfo.InvariantCulture, out oADate))
                 {
                     Value = DateTime.FromOADate(oADate);
                 }

EPPlus/DataValidation/Formulas/ExcelDataValidationFormulaDecimal.cs

@@ -51,7 +51,7 @@ public ExcelDataValidationFormulaDecimal(XmlNamespaceManager namespaceManager, X
             if (!string.IsNullOrEmpty(value))
             {
                 double dValue = default(double);
-                if (double.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out dValue))
+                if (double.TryParse(value, NumberStyles.Number, CultureInfo.InvariantCulture, out dValue))
                 {
                     Value = dValue;
                 }

EPPlus/DataValidation/Formulas/ExcelDataValidationFormulaInt.cs

@@ -48,7 +48,7 @@ public ExcelDataValidationFormulaInt(XmlNamespaceManager namespaceManager, XmlNo
             if (!string.IsNullOrEmpty(value))
             {
                 int intValue = default(int);
-                if (int.TryParse(value, out intValue))
+                if (int.TryParse(value, NumberStyles.Number, CultureInfo.InvariantCulture, out intValue))
                 {
                     Value = intValue;
                 }

EPPlus/DataValidation/Formulas/ExcelDataValidationFormulaTime.cs

@@ -49,7 +49,7 @@ public ExcelDataValidationFormulaTime(XmlNamespaceManager namespaceManager, XmlN
             if (!string.IsNullOrEmpty(value))
             {
                 decimal time = default(decimal);
-                if (decimal.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out time))
+                if (decimal.TryParse(value, NumberStyles.Number, CultureInfo.InvariantCulture, out time))
                 {
                     Value = new ExcelTime(time);
                 }

EPPlus/Drawing/Chart/ExcelChart.cs

@@ -1324,7 +1324,7 @@ public eChartStyle Style
                 else
                 {
                     int v;
-                    if (int.TryParse(node.Value, out v))
+                    if (int.TryParse(node.Value, NumberStyles.Number, CultureInfo.InvariantCulture, out v))
                     {
                         return (eChartStyle)v;
                     }

EPPlus/Drawing/Chart/ExcelScatterChartSerie.cs

@@ -336,7 +336,7 @@ private int getAlphaChannel(string xPath)
             if (s.Length > 0)
             {
                 int i = 0;
-                if (int.TryParse(GetXmlNodeString(s), out i))
+                if (int.TryParse(GetXmlNodeString(s), System.Globalization.NumberStyles.Any, CultureInfo.InvariantCulture, out i))
                 {
                     r = (i == 0) ? 0 : 100 - (i / 1000);
                 }

EPPlus/Drawing/Vml/ExcelVmlDrawingCommentCollection.cs

@@ -34,6 +34,7 @@
 using System.Text;
 using System.Xml;
 using System.Collections;
+using System.Globalization;
 
 namespace OfficeOpenXml.Drawing.Vml
 {
@@ -158,7 +159,7 @@ internal string GetNewId()
                     if (draw.Id.Length > 3 && draw.Id.StartsWith("vml"))
                     {
                         int id;
-                        if (int.TryParse(draw.Id.Substring(3, draw.Id.Length - 3), out id))
+                        if (int.TryParse(draw.Id.Substring(3, draw.Id.Length - 3), System.Globalization.NumberStyles.Any, CultureInfo.InvariantCulture, out id))
                         {
                             if (id > _nextID)
                             {

EPPlus/Drawing/Vml/ExcelVmlDrawingPicture.cs

@@ -288,7 +288,7 @@ private double GetFracDT(string v, double def)
             if (v.EndsWith("f"))
             {
                 v = v.Substring(0, v.Length - 1);
-                if (double.TryParse(v, out d))
+                if (double.TryParse(v, System.Globalization.NumberStyles.Any, CultureInfo.InvariantCulture, out d))
                 {
                     d /= 65535;
                 }
@@ -299,7 +299,7 @@ private double GetFracDT(string v, double def)
             }
             else
             {
-                if (!double.TryParse(v, out d))
+                if (!double.TryParse(v, System.Globalization.NumberStyles.Any, CultureInfo.InvariantCulture, out d))
                 {
                     d = def;
                 }

EPPlus/Drawing/Vml/ExcelVmlDrawingPictureCollection.cs

@@ -147,7 +147,7 @@ internal string GetNewId()
                     if (draw.Id.Length > 3 && draw.Id.StartsWith("vml"))
                     {
                         int id;
-                        if (int.TryParse(draw.Id.Substring(3, draw.Id.Length - 3), out id))
+                        if (int.TryParse(draw.Id.Substring(3, draw.Id.Length - 3), System.Globalization.NumberStyles.Number, CultureInfo.InvariantCulture, out id))
                         {
                             if (id > _nextID)
                             {

EPPlus/Drawing/Vml/ExcelVmlDrawingPosition.cs

@@ -31,6 +31,7 @@
  *******************************************************************************/
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Text;
 using System.Xml;
 namespace OfficeOpenXml.Drawing.Vml
@@ -124,7 +125,7 @@ private int GetNumber(int pos)
             if (numbers.Length == 8)
             {
                 int ret;
-                if (int.TryParse(numbers[_startPos + pos], out ret))
+                if (int.TryParse(numbers[_startPos + pos], System.Globalization.NumberStyles.Number, CultureInfo.InvariantCulture, out ret))
                 {
                     return ret;
                 }

EPPlus/EPPlus.MultiTarget.csproj

@@ -2,39 +2,62 @@
 
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;net35;net40</TargetFrameworks>
-    <AssemblyVersion>4.5.0.3</AssemblyVersion>
-    <FileVersion>4.5.0.3</FileVersion>
-    <Version>4.5.0.3-rc</Version>
+    <AssemblyVersion>4.5.1.0</AssemblyVersion>
+    <FileVersion>4.5.1.0</FileVersion>
+    <Version>4.5.1</Version>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <PackageLicenseUrl>https://www.gnu.org/licenses/lgpl-3.0.en.html</PackageLicenseUrl>
     <PackageProjectUrl>https://github.com/JanKallman/EPPlus</PackageProjectUrl>
     <Authors>Jan Källman</Authors>
     <Company></Company>
     <Product>EPPlus</Product>
-    <Description>Create advanced Excel spreadsheets using .Net</Description>
+    <Description>Create advanced Excel spreadsheets using .NET</Description>
     <AssemblyName>EPPlus</AssemblyName>
     <RootNamespace>EPPlus</RootNamespace>
     <RepositoryUrl></RepositoryUrl>
     <PackageTags>Excel ooxml</PackageTags>
     <Copyright>Jan Källman 2018</Copyright>
-    <PackageReleaseNotes>EPPlus 4.5.0.3 rc
+    <PackageReleaseNotes>EPPlus 4.5.1
 
-This version fixes a bug in the compound document classes effecting VBA and Encryption.
+New features in version 4.5:
+* .NET Core support
+* Sparklines
+* Sort method added to ExcelRange
+* Bug fixes and minor changes, see below and visit https://github.com/JanKallman/EPPlus for tutorials, samples and the latest information
 
-NOTE: Breaking change in .Net Core. The indexer of the worksheets collection will be zero based. See remarks under 4.5.0.1 Beta 1 below.
+Important Notes: 
+Breaking change in .NET Core: The Worksheets collection will be zero based as default.
+This can be altered by setting the ExcelPackage.Compatibility.IsWorksheets1Based to true.
+.NET Core will have this property set to false, and .Net 3.5 and .Net 4 version will have this property set to true for backward compatibility reasons.
+This property can also be set via the appsettings.json file in .Net Core or the app.config file. See sample project for examples!
 
-Visit https://github.com/JanKallman/EPPlus for the latest information
+.NET Core uses a preview of System.Drawing.Common, so be aware of that. We will update it as Microsoft releases newer versions.  
+System.Drawing.Common requires libgdiplus to be installed on non-Windows operating systems. 
+Use your favorite package manager to install it. 
+For example:
 
-EPPlus-Create advanced Excel spreadsheet.
+Homebrew on MacOS:
+brew install mono-libgdiplus
+
+apt-get:
+apt-get install libgdiplus
+
+EPPlus-A .NET Spreadsheet API
+
+Changes
+4.5.1
+* Added web sample for .NET Core from Vahid Nasiri
+* Added sample sparkline sample to sample project
+* Fixed a few problems related to .NET Core on Mac 
 
 4.5.0.3 
-* Fix for compund documents (VBA and Encryption).
+* Fix for compound documents (VBA and Encryption).
 * Fix for Excel 2010 sha1 hashed agile encryption.
 * Upgraded System.Drawing.Common to 4.5.0-preview1-26216-02
-* Also se https://github.com/JanKallman/EPPlus/commits/master
+* Also see https://github.com/JanKallman/EPPlus/commits/master
 
 4.5.0.2 rc
-* Merged in a few pull requests and fixed some issues. See https://github.com/JanKallman/EPPlus/commits/master
+* Merge in e few pull requests and fixed a few issues. See https://github.com/JanKallman/EPPlus/commits/master
 
 
 4.5.0.1 Beta 2
@@ -52,7 +75,127 @@ EPPlus-Create advanced Excel spreadsheet.
 * DataTable propery Added  to ExcelPlotArea for charts
 * Sort method added on ExcelRange
 * Added functions NETWORKDAYS.INTL and NETWORKDAYS. 
-* And a lot of bug fixes. See https://github.com/JanKallman/EPPlus/commits/master</PackageReleaseNotes>
+* And a lot of bug fixes. See https://github.com/JanKallman/EPPlus/commits/master
+
+4.1.1
+* Fix VBA bug in Excel 2016 - 1708 and later
+
+4.1
+* Added functions Rank, Rank.eq, Rank.avg and Search
+* Applied a whole bunch of pull requests...
+ * Performance and memory usage tweaks
+ * Ability to set and retrieve 'custom' extended application properties.
+ * Added style QuotePrefix
+ * Added support for MajorTimeUnit and MinorTimeUnit to chart axes
+ * Added GapWidth Property to BarChart and Gapwidth.
+ * Added Fill and Border properties to ChartSerie.
+ * Added support for MajorTimeUnit and MinorTimeUnit to chart axes
+ * Insert/delete row/column now shifts named ranges, comments, tables and pivottables.
+* And fixed a lot of issues. See http://epplus.codeplex.com/SourceControl/list/changesets for more details
+
+4.0.5 Fixes
+* Switched to Visual Studio 2015 for code and sample projects.
+* Added LineColor, MarkerSize, LineWidth and MarkerLineColor properties to line charts
+* Added LineEnd properties to shapes
+* Added functions Value, DateValue, TimeValue
+* Removed WPF depedency.
+* And fixed a lot of issues. See http://epplus.codeplex.com/SourceControl/list/changesets for more details
+
+4.0.4 Fixes
+* Added functions Daverage, Dvar Dvarp, DMax, DMin DSum,  DGet, DCount and DCountA 
+* Exposed the formula parser logging functionality via FormulaParserManager.
+* And fixed a lot of issues. See http://epplus.codeplex.com/SourceControl/list/changesets for more details
+
+4.0.3 Fixes
+* Added compilation directive for MONO (Thanks Danny)
+* Added functions IfError, Char, Error.Type, Degrees, Fixed, IsNonText, IfNa and SumIfs
+* And fixed a lot of issues. See http://epplus.codeplex.com/SourceControl/list/changesets for more details
+
+4.0.2 Fixes
+* Fixes a whole bunch of bugs related to the cell store (Worksheet.InsertColumn, Worksheet.InsertRow, Worksheet.DeleteColumn, Worksheet.DeleteRow, Range.Copy, Range.Clear)
+* Added functions Acos, Acosh, Asinh, Atanh, Atan, CountBlank, CountIfs, Mina, Offset, Median, Hyperlink, Rept
+* Fix for reading Excel comment content from the t-element.
+* Fix to make Range.LoadFromCollection work better with inheritance
+* And alot of other small fixes
+
+4.0.1 Fixes
+* VBA unreadable content
+* Fixed a few issues with InsertRow and DeleteRow
+* Fixed bug in Average and AverageA 
+* Handling of Div/0 in functions
+* Fixed VBA CodeModule error when copying a worksheet.
+* Value decoding when reading str element for cell value.
+* Better exception when accessing a worksheet out of range in the Excelworksheets indexer.
+* Added Small and Large function to formula parser. Performance fix when encountering an unknown function.
+* Fixed handling strings in formulas
+* Calculate hangs if formula start with a parenthesis.
+* Worksheet.Dimension returned an invalid range in some cases.
+* Rowheight was wrong in some cases.
+* ExcelSeries.Header had an incorrect validation check.
+
+New features 4.0
+
+Replaced Packaging API with DotNetZip
+* This will remove any problems with Isolated Storage and enable multithreading
+
+
+New Cell store
+* Less memory consumption
+* Insert columns (not on the range level)
+* Faster row inserts,
+
+Formula Parser
+* Calculates all formulas in a workbook, a worksheet or in a specified range
+* 100+ functions implemented
+* Access via Calculate methods on Workbook, Worksheet and Range objects.
+* Add custom/missing Excel functions via Workbook. FormulaParserManager.
+* Samples added to the EPPlusSamples project.
+
+The formula parser does not support Array Formulas
+* Intersect operator (Space)
+* References to external workbooks
+* And probably a whole lot of other stuff as well :)
+
+Performance
+*Of course the performance of the formula parser is nowhere near Excels. Our focus has been functionality.
+
+Agile Encryption (Office 2012-)
+* Support for newer type of encryption.
+
+Minor new features
+* Chart worksheets
+* New Chart Types Bubblecharts
+* Radar Charts
+* Area Charts
+* And lots of bug fixes...
+
+Beta 2 Changes
+* Fixed bug when using RepeatColumns &amp; RepeatRows at the same time.
+* VBA project will be left untouched if it’s not accessed.
+* Fixed problem with strings on save.
+* Added locks to the cell store for access by multiple threads.
+* Implemented Indirect function
+* Used DisplayNameAttribute to generate column headers from LoadFromCollection
+* Rewrote ExcelRangeBase.Copy function. 
+* Added caching to Save ZipStream for Cells and shared strings to speed up the Save method.
+* Added Missing InsertColumn and DeleteColumn
+* Added pull request to support Date1904 
+* Added pull request ExcelWorksheet. LoadFromDataReader
+
+Release Candidate changes
+* Fixed some problems with Range.Copy Function
+* InsertColumn and Delete column didn't work in some cases
+* Chart.DisplayBlankAs had the wrong default type in Excel 2010+
+* Datavalidation list overflow caused corruption of the package
+* Fixed a few Calculation when referring ranges (for example If function)
+* Added ChartAxis.DisplayUnit
+* Fixed a bug related to shared formulas
+* Named styles failed in some cases.
+* Style.Indent got an invalid value in some cases.
+* Fixed a problem with AutofitColumns method.
+* Performance fix.
+* A whole lot of other small fixes.
+</PackageReleaseNotes>
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>OpenOfficeXml.snk</AssemblyOriginatorKeyFile>
   </PropertyGroup>

EPPlus/ExcelCellBase.cs

@@ -373,7 +373,7 @@ private static int GetRC(string value, int OffsetValue, out bool fixedAddr)
             if (value[0] == '[' && value[value.Length - 1] == ']') //Offset?                
             {
                 fixedAddr = false;
-                if (int.TryParse(value.Substring(1, value.Length - 2), out num))
+                if (int.TryParse(value.Substring(1, value.Length - 2), NumberStyles.Any, CultureInfo.InvariantCulture, out num))
                 {
                     return (OffsetValue + num);
                 }
@@ -385,7 +385,7 @@ private static int GetRC(string value, int OffsetValue, out bool fixedAddr)
             else
             {
                 fixedAddr = true;
-                if (int.TryParse(value, out num))
+                if (int.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out num))
                 {
                     return num;
                 }

EPPlus/ExcelRangeBase.cs

@@ -1683,7 +1683,7 @@ private object ConvertData(ExcelTextFormat Format, string v, int col, bool isTex
 			if (Format.DataTypes == null || Format.DataTypes.Length <= col || Format.DataTypes[col] == eDataTypes.Unknown)
 			{
 				string v2 = v.EndsWith("%") ? v.Substring(0, v.Length - 1) : v;
-				if (double.TryParse(v2, NumberStyles.Any, Format.Culture, out d))
+				if (double.TryParse(v2, NumberStyles.Number, Format.Culture, out d))
 				{
 					if (v2 == v)
 					{
@@ -1727,7 +1727,7 @@ private object ConvertData(ExcelTextFormat Format, string v, int col, bool isTex
 						}
 					case eDataTypes.Percent:
 						string v2 = v.EndsWith("%") ? v.Substring(0, v.Length - 1) : v;
-						if (double.TryParse(v2, NumberStyles.Any, Format.Culture, out d))
+						if (double.TryParse(v2, NumberStyles.Number, Format.Culture, out d))
 						{
 							return d / 100;
 						}