Add example of using Convert.ToHexString() (#22185)

* Add example of using Convert.ToHexString()

Show an example of converting a byte[] to a hex string using the new .NET 5.0 Convert.ToHexString() method.

* Target net5.0

Target net5.0 so that Convert.ToHexString() is available.

* Fix snippet numbering

Use N+1 snippet number for file.

* Apply code review feedback

Fix URL and clarify versioning.

Co-authored-by: Youssef Victor <[email protected]>

Co-authored-by: Youssef Victor <[email protected]>

Author: martincostello

docs/csharp/programming-guide/types/how-to-convert-between-hexadecimal-strings-and-numeric-types.md

@@ -55,6 +55,12 @@ These examples show you how to perform the following tasks:
 
  [!code-csharp[csProgGuideTypes#38](~/samples/snippets/csharp/VS_Snippets_VBCSharp/CsProgGuideTypes/CS/Class1.cs#38)]  
 
+## Example  
+
+ The following example shows how to convert a [byte](../../language-reference/builtin-types/integral-numeric-types.md) array to a hexadecimal string by calling the <xref:System.Convert.ToHexString%2A?displayProperty=nameWithType> method introduced in .NET 5.0.
+  
+ [!code-csharp[csProgGuideTypes#47](~/samples/snippets/csharp/VS_Snippets_VBCSharp/CsProgGuideTypes/CS/Class1.cs#47)]  
+  
 ## See also
 
 - [Standard Numeric Format Strings](../../../standard/base-types/standard-numeric-format-strings.md)

samples/snippets/csharp/VS_Snippets_VBCSharp/CsProgGuideTypes/CS/CS.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netstandard2.1</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>

samples/snippets/csharp/VS_Snippets_VBCSharp/CsProgGuideTypes/CS/Class1.cs

@@ -555,6 +555,17 @@ static void Main()
 
             // Output: 200.0056
             //</snippet39>
+
+            //<snippet47>
+            byte[] array = { 0x64, 0x6f, 0x74, 0x63, 0x65, 0x74 };
+
+            string hexValue = Convert.ToHexString(array);
+            Console.WriteLine(hexValue);
+
+            /*Output:
+              646F74636574
+             */
+            //</snippet47>
             // Keep the console window open in debug mode.
             System.Console.WriteLine("Press any key to exit.");
             System.Console.ReadKey();