在C#中,可以使用各種方法對數(shù)據(jù)進(jìn)行校驗(yàn)。這里我們將介紹一些常見的數(shù)據(jù)校驗(yàn)方法:
using System;
using System.Text.RegularExpressions;
class Program
{
static void Main()
{
string pattern = @"^\d{5}$"; // 校驗(yàn)5位數(shù)字
string input = "12345";
if (Regex.IsMatch(input, pattern))
{
Console.WriteLine("輸入數(shù)據(jù)符合規(guī)則");
}
else
{
Console.WriteLine("輸入數(shù)據(jù)不符合規(guī)則");
}
}
}
StringLength
,Range
等):using System.ComponentModel.DataAnnotations;
class Person
{
[Required]
[StringLength(10)]
public string Name { get; set; }
[Range(18, 65)]
public int Age { get; set; }
}
然后你可以使用Validator
類來校驗(yàn)數(shù)據(jù):
using System.Collections.Generic;
class Program
{
static void Main()
{
Person person = new Person { Name = "John", Age = 17 };
List<ValidationResult> validationResults = new List<ValidationResult>();
ValidationContext validationContext = new ValidationContext(person);
bool isValid = Validator.TryValidateObject(person, validationContext, validationResults, true);
if (isValid)
{
Console.WriteLine("輸入數(shù)據(jù)符合規(guī)則");
}
else
{
Console.WriteLine("輸入數(shù)據(jù)不符合規(guī)則");
foreach (var result in validationResults)
{
Console.WriteLine(result.ErrorMessage);
}
}
}
}
class Program
{
static bool IsValidEmail(string email)
{
return email.Contains('@') && email.Contains('.');
}
static void Main()
{
string email = "example@example.com";
if (IsValidEmail(email))
{
Console.WriteLine("輸入數(shù)據(jù)符合規(guī)則");
}
else
{
Console.WriteLine("輸入數(shù)據(jù)不符合規(guī)則");
}
}
}
根據(jù)實(shí)際需求,可以選擇合適的數(shù)據(jù)校驗(yàn)方法。