Datetime parsning with null | C# Online Compiler

Datetime parsning with null by Georg Patscheider

using System;
using System.Globalization;
					
public class Program
{
	public static void Main()
	{
		const string format = "yyyy-MM-dd hh:mm tt";
		CultureInfo enUS = new CultureInfo("en-US"); 
		
		string dateString = DateTime.Now.ToString(format);
		
		DateTime? result;
		
		DateTime parseResult;
		if (DateTime.TryParseExact(dateString, format, enUS, DateTimeStyles.None, out parseResult)) {
			result = parseResult;
		}
		else {
			result = null;
		}
		
		Console.WriteLine(result.HasValue ?  result.Value.ToString(format) : "null");
	}
}

 
using System;
using System.Globalization;
                    
public class Program
{
    public static void Main()
    {
        const string format = "yyyy-MM-dd hh:mm tt";
        CultureInfo enUS = new CultureInfo("en-US"); 
        
        string dateString = DateTime.Now.ToString(format);
        
        DateTime? result;
        
        DateTime parseResult;
        if (DateTime.TryParseExact(dateString, format, enUS, DateTimeStyles.None, out parseResult)) {
            result = parseResult;
        }
        else {
            result = null;
        }
        
        Console.WriteLine(result.HasValue ?  result.Value.ToString(format) : "null");
    }
}

|-- CompilationUnitSyntax(Kind=CompilationUnit)
|   |-- UsingDirectiveSyntax(Kind=UsingDirective)
|       \-- SyntaxToken(Kind=UsingKeyword, Text="using", ValueText: "using", ToFullString="using ")
|                Trailing Trivia: SyntaxTrivia(Kind=WhitespaceTrivia " ")
|   |   |-- QualifiedNameSyntax(Kind=QualifiedName)
|   |   |   |-- IdentifierNameSyntax(Kind=IdentifierName)
|   |   |       \-- SyntaxToken(Kind=IdentifierToken, Text="System", ValueText: "System", ToFullString="System")
|   |       \-- SyntaxToken(Kind=DotToken, Text=".", ValueText: ".", ToFullString=".")
|   |   |   |-- IdentifierNameSyntax(Kind=IdentifierName)
|   |   |       \-- SyntaxToken(Kind=IdentifierToken, Text="Security", ValueText: "Security", ToFullString="Security")
|       \-- SyntaxToken(Kind=SemicolonToken, Text=";", ValueText: ";", ToFullString=";
")
|                Trailing Trivia: SyntaxTrivia(Kind=EndOfLineTrivia "
")
|   |-- GlobalStatementSyntax(Kind=GlobalStatement)
|   |   |-- LocalDeclarationStatementSyntax(Kind=LocalDeclarationStatement)
|   |   |   |-- VariableDeclarationSyntax(Kind=VariableDeclaration)
|   |   |   |   |-- PredefinedTypeSyntax(Kind=PredefinedType)
|   |   |   |       \-- SyntaxToken(Kind=IntKeyword, Text="int", ValueText: "int", ToFullString="// Simple demo
int ")
|   |   |   |                Leading Trivia: SyntaxTrivia(Kind=SingleLineCommentTrivia "// Simple demo")
|   |   |   |                Leading Trivia: SyntaxTrivia(Kind=EndOfLineTrivia "
")
|   |   |   |                Trailing Trivia: SyntaxTrivia(Kind=WhitespaceTrivia " ")
|   |   |   |   |-- VariableDeclaratorSyntax(Kind=VariableDeclarator)
|   |   |   |       \-- SyntaxToken(Kind=IdentifierToken, Text="", ValueText: "", ToFullString="int = 10")
|   |   |   |                Trailing Trivia: SyntaxTrivia(Kind=SkippedTokensTrivia "int")
|   |   |   |                Trailing Trivia: SyntaxTrivia(Kind=WhitespaceTrivia " ")
|   |   |   |                Trailing Trivia: SyntaxTrivia(Kind=SkippedTokensTrivia "=")
|   |   |   |                Trailing Trivia: SyntaxTrivia(Kind=WhitespaceTrivia " ")
|   |   |   |                Trailing Trivia: SyntaxTrivia(Kind=SkippedTokensTrivia "10")
|   |       \-- SyntaxToken(Kind=SemicolonToken, Text=";", ValueText: ";", ToFullString=";")
    \-- SyntaxToken(Kind=EndOfFileToken, Text="", ValueText: "", ToFullString="")

Last Run:	4:34:38 pm
Compile:	0.178s
Execute:	0.16s
Memory:	14.46Mb
CPU:	0.338s

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