Modernize C# snippets - System/E*

snippets/csharp/System/EntryPointNotFoundException/Overview/Program.cs

@@ -0,0 +1,6 @@
+BadCallExample.Run();
+FixImportAssemblyExample.Run();
+ImportAssemblyExample.Run();
+MangleMissingExample.Run();
+MangleFixedExample.Run();
+NoFunctionExample.Run();

snippets/csharp/System/EntryPointNotFoundException/Overview/Project.csproj

@@ -0,0 +1,6 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+  </PropertyGroup>
+</Project>

snippets/csharp/System/EntryPointNotFoundException/Overview/badcall1.cs

@@ -2,31 +2,33 @@
 using System;
 using System.Runtime.InteropServices;
 
-public class Example
+public class BadCallExample
 {
-   [DllImport("user32.dll", CharSet = CharSet.Unicode, ExactSpelling = true )]
-   public static extern int MessageBox(IntPtr hwnd, String text, String caption, uint type);
+    [DllImport("user32.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
+    public static extern int MessageBox(IntPtr hwnd, string text, string caption, uint type);
 
-   [DllImport("user32.dll", CharSet = CharSet.Unicode, ExactSpelling = true )]
-   public static extern int MessageBoxW(IntPtr hwnd, String text, String caption, uint type);
+    [DllImport("user32.dll", CharSet = CharSet.Unicode, ExactSpelling = true)]
+    public static extern int MessageBoxW(IntPtr hwnd, string text, string caption, uint type);
 
-   public static void Main()
-   {
-      try {
-         MessageBox(new IntPtr(0), "Calling the MessageBox Function", "Example", 0);
-      }
-      catch (EntryPointNotFoundException e) {
-         Console.WriteLine("{0}:\n   {1}", e.GetType().Name,
-                           e.Message);
-      }
+    public static void Run()
+    {
+        try
+        {
+            MessageBox(new IntPtr(0), "Calling the MessageBox Function", "Example", 0);
+        }
+        catch (EntryPointNotFoundException e)
+        {
+            Console.WriteLine($"{e.GetType().Name}:\n   {e.Message}");
+        }
 
-      try {
-         MessageBoxW(new IntPtr(0), "Calling the MessageBox Function", "Example", 0);
-      }
-      catch (EntryPointNotFoundException e) {
-         Console.WriteLine("{0}:\n   {1}", e.GetType().Name,
-                           e.Message);
-      }
-   }
+        try
+        {
+            MessageBoxW(new IntPtr(0), "Calling the MessageBox Function", "Example", 0);
+        }
+        catch (EntryPointNotFoundException e)
+        {
+            Console.WriteLine($"{e.GetType().Name}:\n   {e.Message}");
+        }
+    }
 }
 // </Snippet2>

snippets/csharp/System/EntryPointNotFoundException/Overview/fiximportassembly1.cs

@@ -1,12 +1,9 @@
 // <Snippet5>
 using System;
 
-public class Example
+public class FixImportAssemblyExample
 {
-   public static void Main()
-   {
-       Console.WriteLine(StringUtilities.SayGoodMorning("Dakota"));
-   }
+    public static void Run() => Console.WriteLine(StringUtilities.SayGoodMorning("Dakota"));
 }
 // The example displays the following output:
 //        A top of the morning to you, Dakota!

snippets/csharp/System/EntryPointNotFoundException/Overview/importassembly1.cs

@@ -2,15 +2,12 @@
 using System;
 using System.Runtime.InteropServices;
 
-public class Example
+public class ImportAssemblyExample
 {
-   [DllImport("StringUtilities.dll", CharSet = CharSet.Unicode )]
-   public static extern String SayGoodMorning(String name);
+    [DllImport("StringUtilities.dll", CharSet = CharSet.Unicode)]
+    public static extern string SayGoodMorning(string name);
 
-   public static void Main()
-   {
-      Console.WriteLine(SayGoodMorning("Dakota"));
-   }
+    public static void Run() => Console.WriteLine(SayGoodMorning("Dakota"));
 }
 // The example displays the following output:
 //    Unhandled Exception: System.EntryPointNotFoundException: Unable to find an entry point

snippets/csharp/System/EntryPointNotFoundException/Overview/mangle1.cs

@@ -2,15 +2,12 @@
 using System;
 using System.Runtime.InteropServices;
 
-public class Example
+public class MangleMissingExample
 {
-   [DllImport("TestDll.dll")]
-   public static extern int Double(int number);
+    [DllImport("TestDll.dll")]
+    public static extern int Double(int number);
 
-   public static void Main()
-   {
-      Console.WriteLine(Double(10));
-   }
+    public static void Run() => Console.WriteLine(Double(10));
 }
 // The example displays the following output:
 //    Unhandled Exception: System.EntryPointNotFoundException: Unable to find

snippets/csharp/System/EntryPointNotFoundException/Overview/mangle2.cs

@@ -2,15 +2,12 @@
 using System;
 using System.Runtime.InteropServices;
 
-public class Example
+public class MangleFixedExample
 {
-   [DllImport("TestDll.dll", EntryPoint = "?Double@@YAHH@Z")]
-   public static extern int Double(int number);
+    [DllImport("TestDll.dll", EntryPoint = "?Double@@YAHH@Z")]
+    public static extern int Double(int number);
 
-   public static void Main()
-   {
-      Console.WriteLine(Double(10));
-   }
+    public static void Run() => Console.WriteLine(Double(10));
 }
 // The example displays the following output:
 //    20

snippets/csharp/System/EntryPointNotFoundException/Overview/nofunction1.cs

@@ -2,21 +2,22 @@
 using System;
 using System.Runtime.InteropServices;
 
-public class Example
+public class NoFunctionExample
 {
-   [DllImport("user32.dll")]
-   public static extern int GetMyNumber();
+    [DllImport("user32.dll")]
+    public static extern int GetMyNumber();
 
-   public static void Main()
-   {
-      try {
-         int number = GetMyNumber();
-      }
-      catch (EntryPointNotFoundException e) {
-         Console.WriteLine("{0}:\n   {1}", e.GetType().Name,
-                           e.Message);
-      }
-   }
+    public static void Run()
+    {
+        try
+        {
+            int number = GetMyNumber();
+        }
+        catch (EntryPointNotFoundException e)
+        {
+            Console.WriteLine($"{e.GetType().Name}:\n   {e.Message}");
+        }
+    }
 }
 // The example displays the following output:
 //    EntryPointNotFoundException:

snippets/csharp/System/EntryPointNotFoundException/Overview/stringutilities.cs

@@ -3,9 +3,6 @@
 
 public static class StringUtilities
 {
-   public static String SayGoodMorning(String name)
-   {
-      return String.Format("A top of the morning to you, {0}!", name);
-   }
+    public static string SayGoodMorning(string name) => $"A top of the morning to you, {name}!";
 }
-// </Snippet3>
+// </Snippet3>

snippets/csharp/System/Enum/CompareTo/EnumCompareTo.cs

@@ -1,19 +1,21 @@
 //<snippet1>
 using System;
 
-public class CompareToTest {
+public class CompareToTest
+{
     enum VehicleDoors { Motorbike = 0, Sportscar = 2, Sedan = 4, Hatchback = 5 };
 
-    public static void Main() {
+    public static void Main()
+    {
         VehicleDoors myVeh = VehicleDoors.Sportscar;
         VehicleDoors yourVeh = VehicleDoors.Motorbike;
         VehicleDoors otherVeh = VehicleDoors.Sedan;
 
-        Console.WriteLine("Does a {0} have more doors than a {1}?", myVeh, yourVeh);
-        Console.WriteLine( "{0}{1}", myVeh.CompareTo(yourVeh) > 0 ? "Yes" : "No", Environment.NewLine );
+        Console.WriteLine($"Does a {myVeh} have more doors than a {yourVeh}?");
+        Console.WriteLine($"{(myVeh.CompareTo(yourVeh) > 0 ? "Yes" : "No")}{Environment.NewLine}");
 
-        Console.WriteLine("Does a {0} have more doors than a {1}?", myVeh, otherVeh);
-        Console.WriteLine( "{0}", myVeh.CompareTo(otherVeh) > 0 ? "Yes" : "No" );
+        Console.WriteLine($"Does a {myVeh} have more doors than a {otherVeh}?");
+        Console.WriteLine($"{(myVeh.CompareTo(otherVeh) > 0 ? "Yes" : "No")}");
     }
 }
 // The example displays the following output:
@@ -22,4 +24,4 @@ public static void Main() {
 //
 //       Does a Sportscar have more doors than a Sedan?
 //       No
-//</snippet1>
+//</snippet1>

snippets/csharp/System/Enum/Equals/EnumEquals.cs

@@ -1,30 +1,31 @@
 //<snippet1>
 using System;
 
-public class EqualsTest {
+public class EqualsTest
+{
     enum Colors { Red, Green, Blue, Yellow };
     enum Mammals { Cat, Dog, Horse, Dolphin };
 
-    public static void Main() {
+    public static void Main()
+    {
         Mammals myPet = Mammals.Cat;
         Colors myColor = Colors.Red;
         Mammals yourPet = Mammals.Dog;
         Colors yourColor = Colors.Red;
 
-        Console.WriteLine("My favorite animal is a {0}", myPet);
-        Console.WriteLine("Your favorite animal is a {0}", yourPet);
-        Console.WriteLine("Do we like the same animal? {0}", myPet.Equals(yourPet) ? "Yes" : "No");
+        Console.WriteLine($"My favorite animal is a {myPet}");
+        Console.WriteLine($"Your favorite animal is a {yourPet}");
+        Console.WriteLine($"Do we like the same animal? {(myPet.Equals(yourPet) ? "Yes" : "No")}");
 
         Console.WriteLine();
-        Console.WriteLine("My favorite color is {0}", myColor);
-        Console.WriteLine("Your favorite color is {0}", yourColor);
-        Console.WriteLine("Do we like the same color? {0}", myColor.Equals(yourColor) ? "Yes" : "No");
+        Console.WriteLine($"My favorite color is {myColor}");
+        Console.WriteLine($"Your favorite color is {yourColor}");
+        Console.WriteLine($"Do we like the same color? {(myColor.Equals(yourColor) ? "Yes" : "No")}");
 
         Console.WriteLine();
-        Console.WriteLine("The value of my color ({0}) is {1}", myColor, Enum.Format(typeof(Colors), myColor, "d"));
-        Console.WriteLine("The value of my pet (a {0}) is {1}", myPet, Enum.Format(typeof(Mammals), myPet, "d"));
-        Console.WriteLine("Even though they have the same value, are they equal? {0}",
-                    myColor.Equals(myPet) ? "Yes" : "No");
+        Console.WriteLine($"The value of my color ({myColor}) is {Enum.Format(typeof(Colors), myColor, "d")}");
+        Console.WriteLine($"The value of my pet (a {myPet}) is {Enum.Format(typeof(Mammals), myPet, "d")}");
+        Console.WriteLine($"Even though they have the same value, are they equal? {(myColor.Equals(myPet) ? "Yes" : "No")}");
     }
 }
 // The example displays the following output:
@@ -39,4 +40,4 @@ public static void Main() {
 //    The value of my color (Red) is 0
 //    The value of my pet (a Cat) is 0
 //    Even though they have the same value, are they equal? No
-//</snippet1>
+//</snippet1>

snippets/csharp/System/Enum/Equals/enumequals1.cs

@@ -1,26 +1,29 @@
 // <Snippet1>
 using System;
 
-public enum SledDog { Unknown=0, AlaskanMalamute=1, Malamute=1,
-                      Husky=2, SiberianHusky=2 };
+public enum SledDog
+{
+    Unknown = 0, AlaskanMalamute = 1, Malamute = 1,
+    Husky = 2, SiberianHusky = 2
+};
 
-public enum WorkDog { Unknown=0, Newfoundland=1, GreatPyrennes=2 };
+public enum WorkDog { Unknown = 0, Newfoundland = 1, GreatPyrennes = 2 };
 
 public class Example
 {
-   public static void Main()
-   {
-      SledDog dog1 = SledDog.Malamute;
-      SledDog dog2 = SledDog.AlaskanMalamute;
-      WorkDog dog3 = WorkDog.Newfoundland;
+    public static void Main()
+    {
+        SledDog dog1 = SledDog.Malamute;
+        SledDog dog2 = SledDog.AlaskanMalamute;
+        WorkDog dog3 = WorkDog.Newfoundland;
 
-      Console.WriteLine("{0:F} ({0:D}) = {1:F} ({1:D}): {2}",
-                        dog1, dog2, dog1.Equals(dog2));
-      Console.WriteLine("{0:F} ({0:D}) = {1:F} ({1:D}): {2}",
-                        dog1, dog3, dog1.Equals(dog3));
-   }
+        Console.WriteLine("{0:F} ({0:D}) = {1:F} ({1:D}): {2}",
+                          dog1, dog2, dog1.Equals(dog2));
+        Console.WriteLine("{0:F} ({0:D}) = {1:F} ({1:D}): {2}",
+                          dog1, dog3, dog1.Equals(dog3));
+    }
 }
 // The example displays the following output:
 //       Malamute (1) = Malamute (1): True
 //       Malamute (1) = Newfoundland (1): False
-// </Snippet1>
+// </Snippet1>

snippets/csharp/System/Enum/Format/EnumFormat.cs

@@ -3,13 +3,15 @@
 
 enum Colors { Red, Green, Blue, Yellow };
 
-public class FormatTest {
-    public static void Main() {
+public class FormatTest
+{
+    public static void Main()
+    {
         Colors myColor = Colors.Blue;
 
-        Console.WriteLine("My favorite color is {0}.", myColor);
-        Console.WriteLine("The value of my favorite color is {0}.", Enum.Format(typeof(Colors), myColor, "d"));
-        Console.WriteLine("The hex value of my favorite color is {0}.", Enum.Format(typeof(Colors), myColor, "x"));
+        Console.WriteLine($"My favorite color is {myColor}.");
+        Console.WriteLine($"The value of my favorite color is {Enum.Format(typeof(Colors), myColor, "d")}.");
+        Console.WriteLine($"The hex value of my favorite color is {Enum.Format(typeof(Colors), myColor, "x")}.");
     }
 }
 // The example displays the following output:

snippets/csharp/System/Enum/GetName/EnumGetName.cs

@@ -1,14 +1,16 @@
 //<Snippet1>
 using System;
 
-public class GetNameTest {
+public class GetNameTest
+{
     enum Colors { Red, Green, Blue, Yellow };
     enum Styles { Plaid, Striped, Tartan, Corduroy };
 
-    public static void Main() {
+    public static void Main()
+    {
 
-        Console.WriteLine("The 4th value of the Colors Enum is {0}", Enum.GetName(typeof(Colors), 3));
-        Console.WriteLine("The 4th value of the Styles Enum is {0}", Enum.GetName(typeof(Styles), 3));
+        Console.WriteLine($"The 4th value of the Colors Enum is {Enum.GetName(typeof(Colors), 3)}");
+        Console.WriteLine($"The 4th value of the Styles Enum is {Enum.GetName(typeof(Styles), 3)}");
     }
 }
 // The example displays the following output: