C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
using FluentValidation;
					
public class Program
{
	public static void Main()
	{
		var product = new Product { FundservId = "123" };
        var validator = new ProductValidator();
        
        var result = validator.Validate(product);
        
        if (result.IsValid)
        {
            Console.WriteLine("Validation passed!");
        }
        else
        {
            foreach (var error in result.Errors)
            {
                Console.WriteLine($"Error: {error.ErrorMessage}");
            }
        }
	}
}

public class Product
{
    public string FundservId { get; set; }
}

public class ProductValidator : AbstractValidator<Product>
{
    public ProductValidator()
    {
                    RuleFor(p => p.FundservId).MaximumLength(10)
                               .When(x => x.FundservId != null)
                               .Must(t => !t.Contains(' ')).WithMessage($"FundservId cannot contain whitespaces");
    }
}

​x
 
using System;
using FluentValidation;
                    
public class Program
{
    public static void Main()
    {
        var product = new Product { FundservId = "123" };
        var validator = new ProductValidator();
        
        var result = validator.Validate(product);
        
        if (result.IsValid)
        {
            Console.WriteLine("Validation passed!");
        }
        else
        {
            foreach (var error in result.Errors)
            {
                Console.WriteLine($"Error: {error.ErrorMessage}");
            }
        }
    }
}
​
public class Product
{
    public string FundservId { get; set; }
}
​
public class ProductValidator : AbstractValidator<Product>
{
    public ProductValidator()
    {
                    RuleFor(p => p.FundservId).MaximumLength(10)
                               .When(x => x.FundservId != null)
                               .Must(t => !t.Contains(' ')).WithMessage($"FundservId cannot contain whitespaces");
    }
}

Roslyn 2.0 Compiler; Environment version: 4.0.30319.42000

<?xml version="1.0" encoding="utf-16"?>
<data xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" someattributea="" someattributeb="" someattributec="" ExtraAttr="" p1:someattributec="namespace attr" xmlns:p1="http://SomeTestNamespace.com" />
<?xml version="1.0" encoding="utf-16"?>
<data xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" someattributea="replacement value for Someattributea" someattributec="" ExtraAttr="" p1:someattributec="namespace attr" xmlns:p1="http://SomeTestNamespace.com" />

Testing a list of Data.
<?xml version="1.0" encoding="utf-16"?>
<DataList xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <DataItem someattributea="" someattributeb="" someattributec="" ExtraAttr="" p1:someattributec="namespace attr" xmlns:p1="http://SomeTestNamespace.com" xmlns="https://Test Namespace" />
  <DataItem someattributea="" someattributeb="" someattributec="" ExtraAttr="" p1:someattributec="namespace attr" xmlns:p1="http://SomeTestNamespace.com" xmlns="https://Test Namespace" />
</DataList>
<?xml version="1.0" encoding="utf-16"?>
<DataList xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <DataItem someattributea="" someattributeb="" someattributec="" ExtraAttr="" p1:someattributec="namespace attr" xmlns:p1="http://SomeTestNamespace.com" xmlns="https://Test Namespace" />
  <DataItem someattributea="" someattributeb="" someattributec="" ExtraAttr="" p1:someattributec="namespace attr" xmlns:p1="http://SomeTestNamespace.com" xmlns="https://Test Namespace" />
</DataList>

Last Run:	6:50:01 pm
Compile:	1.125s
Execute:	0.29s
Memory:	2.40Mb
CPU:	0.547s

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