Update v2.4.0

Author: rabanti-github

Changelog.md

@@ -1,5 +1,18 @@
 # Change Log
 
+## v2.4.0
+---
+Release Date: **07.06.2018**
+
+- Added style appending (builder / method chaining)
+- Added new basic styles ColorizedText, ColorizedBackground and Font as functions
+- Added a new constructor for Workbooks without file name to handle stream-only workbooks more logiccal
+- Added the functions HasCell, GetLastColumnNumber and GetLastRowNumber in the Worksheet class
+- Fixed a bug when overriding a worksheet name with sanitizing
+- Added new demo for the introduced style features
+- Internal optimizations and fixes
+
+
 ## v2.3.2
 ---
 Release Date: **30.05.2018**

Demo/Program.cs

@@ -21,6 +21,7 @@ class Program
         /// <param name="args">Not used</param>
         static void Main(string[] args)
         {
+            
             BasicDemo();
             ShortenerDemo();
             StreamDemo();
@@ -33,6 +34,7 @@ static void Main(string[] args)
             Demo7();
             Demo8();
             Demo9();
+            Demo10();
 
             /* ### PERFORMANCE TESTS ### */
             // # Use tests in this section to test the performance of PicoXLSX
@@ -376,5 +378,30 @@ private static void Demo9()
             workbook.Save();                                                                            // Save the workbook
         }
 
+        /// <summary>
+        /// This demo shows the usage of style appending
+        /// </summary>
+        private static void Demo10()
+        {
+            Workbook wb = new Workbook("demo10.xlsx", "styleAppending");                                // Create a new workbook
+
+            Style style = new Style();                                                                  // Create a new style
+            style.Append(Style.BasicStyles.Bold);                                                       // Append a basic style (bold) 
+            style.Append(Style.BasicStyles.Underline);                                                  // Append a basic style (underline) 
+            style.Append(Style.BasicStyles.Font("Arial Black", 20));                                    // Append a basic style (custom font) 
+
+            wb.WS.Value("THIS IS A TEST", style);                                                       // Add text and the appended style
+            wb.WS.Down();                                                                               // Go to a new row
+
+            Style chainedStyle = new Style()                                                            // Create a new style...
+                .Append(Style.BasicStyles.Underline)                                                    // ... and append another part (chaining underline)
+                .Append(Style.BasicStyles.ColorizedText("FF00FF"))                                      // ... and append another part (chaining colorized text)
+                .Append(Style.BasicStyles.ColorizedBackground("AAFFAA"));                               // ... and append another part (chaining colorized background)
+
+            wb.WS.Value("Another test", chainedStyle);                                                  // Add text and the appended style
+
+            wb.Save();                                                                                  // Save the workbook
+        }
+
     }
 }