Initial commit

vs4win/Chapter03/HandlingExceptions/HandlingExceptions.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+	<PropertyGroup>
+		<OutputType>Exe</OutputType>
+		<TargetFramework>net6.0</TargetFramework>
+		<ImplicitUsings>enable</ImplicitUsings>
+		<Nullable>enable</Nullable>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<Using Include="System.Console" Static="true" />
+	</ItemGroup>
+
+</Project>

vs4win/Chapter03/HandlingExceptions/Program.cs

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+WriteLine("Before parsing");
+Write("What is your age? ");
+string? input = ReadLine(); // or use "49" in a notebook
+
+try
+{
+  int age = int.Parse(input!);
+  WriteLine($"You are {age} years old.");
+}
+catch (OverflowException)
+{
+  WriteLine("Your age is a valid number format but it is either too big or small.");
+}
+catch (FormatException)
+{
+  WriteLine("The age you entered is not a valid number format.");
+}
+catch (Exception ex)
+{
+  WriteLine($"{ex.GetType()} says {ex.Message}");
+}
+WriteLine("After parsing");
+
+Write("Enter an amount: ");
+string amount = ReadLine()!;
+if (string.IsNullOrEmpty(amount)) return;
+
+try
+{
+  decimal amountValue = decimal.Parse(amount);
+  WriteLine($"Amount formatted as currency: {amountValue:C}");
+}
+catch (FormatException) when (amount.Contains("$"))
+{
+  WriteLine("Amounts cannot use the dollar sign!");
+}
+catch (FormatException)
+{
+  WriteLine("Amounts must only contain digits!");
+}