Update v2.6.1

Author: rabanti-github

Changelog.md

@@ -1,5 +1,16 @@
 # Change Log
 
+## v2.6.1 
+
+---
+Release Date: **19.01.2025**
+
+- Fixed a bug on writing default column widths (not persisted in some cases)
+- Adapted style reader: When a workbook is loaded, not defined color values of Border styles are now empty strings (were null), as if a new style is created 
+- Code maintenance
+
+Note: The color values of Border styles are handled identical on writing XLSX files, either if null or empty. The change of the reader behavior was to enforce the "What You Can Write Is What You Can Read" policy of the library (writing an empty string as color value should lead to an empty string on read).
+
 ## v2.6.0 
 
 ---

Demo/Demo.csproj

@@ -15,9 +15,9 @@
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
     <TargetFrameworks>net45;net5.0</TargetFrameworks>
     <StartupObject>Demo.Program</StartupObject>
-    <Version>2.6.0</Version>
-    <AssemblyVersion>2.6.0.0</AssemblyVersion>
-    <FileVersion>2.6.0.0</FileVersion>
+    <Version>2.6.1</Version>
+    <AssemblyVersion>2.6.1.0</AssemblyVersion>
+    <FileVersion>2.6.1.0</FileVersion>
     <GeneratePackageOnBuild>false</GeneratePackageOnBuild>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <PackageTags>XLSX Excel ExcelWriter ExcelReader Office</PackageTags>

NanoXLSX/Cell.cs

@@ -450,7 +450,7 @@ public static IEnumerable<Cell> ConvertArray<T>(IEnumerable<T> list)
             Type t;
             foreach (T item in list)
             {
-                if (item == null)
+                if (object.Equals(item, default(T)))
                 {
                     c = new Cell(null, CellType.EMPTY);
                     output.Add(c);

NanoXLSX/LowLevel/XlsxWriter.cs

@@ -28,6 +28,13 @@ namespace NanoXLSX.LowLevel
     /// <remarks>This class is only for internal use. Use the high level API (e.g. class Workbook) to manipulate data and create Excel files</remarks>
     class XlsxWriter
     {
+        #region constants
+        /// <summary>
+        /// Threshold, using when floats are compared
+        /// </summary>
+        private const float FLOAT_THRESHOLD = 0.0001f;
+        #endregion
+
 
         #region staticFields
         private static DocumentPath WORKBOOK = new DocumentPath("workbook.xml", "xl/");
@@ -823,7 +830,7 @@ private string CreateColsString(Worksheet worksheet)
                 StringBuilder sb = new StringBuilder();
                 foreach (KeyValuePair<int, Column> column in worksheet.Columns)
                 {
-                    if (column.Value.Width == worksheet.DefaultColumnWidth && !column.Value.IsHidden && column.Value.DefaultColumnStyle == null) { continue; }
+                    if (Math.Abs(column.Value.Width - worksheet.DefaultColumnWidth) < FLOAT_THRESHOLD && !column.Value.IsHidden && column.Value.DefaultColumnStyle == null) { continue; }
                     if (worksheet.Columns.ContainsKey(column.Key))
                     {
                         if (worksheet.Columns[column.Key].IsHidden)
@@ -907,19 +914,13 @@ private string CreateRowString(DynamicRow dynamicRow, Worksheet worksheet)
             int rowNumber = dynamicRow.RowNumber;
             string height = "";
             string hidden = "";
-            if (worksheet.RowHeights.ContainsKey(rowNumber))
+            if (worksheet.RowHeights.ContainsKey(rowNumber) && Math.Abs(worksheet.RowHeights[rowNumber] - worksheet.DefaultRowHeight) > FLOAT_THRESHOLD)
             {
-                if (worksheet.RowHeights[rowNumber] != worksheet.DefaultRowHeight)
-                {
-                    height = " x14ac:dyDescent=\"0.25\" customHeight=\"1\" ht=\"" + Utils.GetInternalRowHeight(worksheet.RowHeights[rowNumber]).ToString("G", culture) + "\"";
-                }
+               height = " x14ac:dyDescent=\"0.25\" customHeight=\"1\" ht=\"" + Utils.GetInternalRowHeight(worksheet.RowHeights[rowNumber]).ToString("G", culture) + "\"";
             }
-            if (worksheet.HiddenRows.ContainsKey(rowNumber))
+            if (worksheet.HiddenRows.ContainsKey(rowNumber) && worksheet.HiddenRows[rowNumber])
             {
-                if (worksheet.HiddenRows[rowNumber])
-                {
-                    hidden = " hidden=\"1\"";
-                }
+               hidden = " hidden=\"1\"";
             }
             StringBuilder sb = new StringBuilder();
             sb.Append("<row r=\"").Append((rowNumber + 1).ToString()).Append("\"").Append(height).Append(hidden).Append(">");

NanoXLSX/NanoXLSX.csproj

@@ -23,9 +23,9 @@
     <PackageLicenseFile></PackageLicenseFile>
     <PackageReleaseNotes>Please see https://github.com/rabanti-github/NanoXLSX/blob/master/Changelog.md for the release notes</PackageReleaseNotes>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
-    <Version>2.6.0</Version>
-    <AssemblyVersion>2.6.0.0</AssemblyVersion>
-    <FileVersion>2.6.0.0</FileVersion>
+    <Version>2.6.1</Version>
+    <AssemblyVersion>2.6.1.0</AssemblyVersion>
+    <FileVersion>2.6.1.0</FileVersion>
     <RepositoryType>git</RepositoryType>
     <GenerateDocumentationFile>True</GenerateDocumentationFile>
   </PropertyGroup>

NanoXLSX/Worksheet.cs

@@ -11,7 +11,6 @@
 using System.Text;
 using System.Text.RegularExpressions;
 using NanoXLSX.Exceptions;
-using NanoXLSX.LowLevel;
 using NanoXLSX.Styles;
 using FormatException = NanoXLSX.Exceptions.FormatException;
 

NanoXlsx Test/NanoXLSX Test.csproj

@@ -17,9 +17,9 @@
     <PackageTags>Excel Office XLSX</PackageTags>
     <RepositoryType>git</RepositoryType>
     <PackageReleaseNotes>Please see https://github.com/rabanti-github/NanoXLSX/blob/master/Changelog.md for the release notes</PackageReleaseNotes>
-    <Version>2.6.0</Version>
-    <AssemblyVersion>2.6.0.0</AssemblyVersion>
-    <FileVersion>2.6.0.0</FileVersion>
+    <Version>2.6.1</Version>
+    <AssemblyVersion>2.6.1.0</AssemblyVersion>
+    <FileVersion>2.6.1.0</FileVersion>
   </PropertyGroup>
   <ItemGroup>
     <None Remove="Resources\autofilter.xlsx" />

README.md

@@ -1,7 +1,10 @@
-# NanoXLSX ![NanoXLSX](https://github.com/rabanti-github/NanoXLSX/blob/master/Documentation/icons/NanoXLSX.png)
+![NanoXLSX](https://raw.githubusercontent.com/rabanti-github/NanoXLSX/refs/heads/master/Documentation/icons/NanoXLSX.png)
 
-![nuget](https://img.shields.io/nuget/v/NanoXLSX.svg?maxAge=86400)
-![license](https://img.shields.io/github/license/rabanti-github/NanoXlsx.svg)
+# NanoXLSX 
+
+![NuGet Version](https://img.shields.io/nuget/v/NanoXLSX)
+![NuGet Downloads](https://img.shields.io/nuget/dt/NanoXLSX)
+![GitHub License](https://img.shields.io/github/license/rabanti-github/NanoXLSX)
 [![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2Frabanti-github%2FNanoXLSX.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2Frabanti-github%2FNanoXLSX?ref=badge_shield)
 
 NanoXLSX is a small .NET library written in C#, to create and read Microsoft Excel files in the XLSX format (Microsoft Excel 2007 or newer) in an easy and native way