有没有办法设置应用程序级别的日期时间格式？

Question

C# / MVC 以 MM/DD/YYYY 格式生成datetime，但有时我需要输入DD/MM/YYYY 格式。这是通过提供自定义格式来完成的。但是，与其编写代码让 C# 生成日期时间为DD/MM/YYYY，我是否可以进行应用程序级别的配置，例如更改web.config、app.config 或machine.config？

Answer 1

如果您只想在应用程序范围内设置日期格式，您可以在 Web.config 中设置文化

<globalization culture="en-GB" />

但是，如果您想减少重复代码，您可以更改当前线程的文化，然后在您完成对date.ToShortDateString() 的调用后立即将其切换回来。这是一个 CultureContext 类，它将仅在 using 块内部更改格式。

/// <summary>
/// Allows switching the current thread to a new culture in a using block that will automatically 
/// return the culture to its previous state upon completion.
/// </summary>
public class CultureContext
    : IDisposable
{
    public CultureContext(
        CultureInfo culture,
        CultureInfo uiCulture
        )
    {
        if (culture == null)
            throw new ArgumentNullException("culture");
        if (uiCulture == null)
            throw new ArgumentNullException("uiCulture");

        this.currentThread = Thread.CurrentThread;

        // Record the current culture settings so they can be restored later.
        this.originalCulture = this.currentThread.CurrentCulture;
        this.originalUICulture = this.currentThread.CurrentUICulture;

        // Set both the culture and UI culture for this context.
        this.currentThread.CurrentCulture = culture;
        this.currentThread.CurrentUICulture = uiCulture;
    }

    private readonly Thread currentThread;
    private readonly CultureInfo originalCulture;
    private readonly CultureInfo originalUICulture;

    public CultureInfo OriginalCulture
    {
        get { return this.originalCulture; }
    }

    public CultureInfo OriginalUICulture
    {
        get { return this.originalUICulture; }
    }

    public void Dispose()
    {
        // Restore the culture to the way it was before the constructor was called.
        this.currentThread.CurrentCulture = this.originalCulture;
        this.currentThread.CurrentUICulture = this.originalUICulture;
    }
}

用法

// Temporarily override the current thread's culture with the invariant culture
using (var cultureContext = new CultureContext(
    CultureInfo.InvariantCulture,
    System.Threading.Thread.CurrentThread.CurrentUICulture))
{
    // All date formats here will be in the invariant culture

    using (var originalCultureContext = new CultureContext(
        cultureContext.OriginalCulture, 
        cultureContext.OriginalUICulture))
    {
        // All date formats here will be in the default culture
    }

    // All date formats here will be in the invariant culture

}

请参阅this answer 了解文化和 UI 文化之间的区别。

Answer 2

尝试在 Web.config 中设置文化

<globalization culture="en-GB"/>