using Microsoft.AspNetCore.Mvc.ModelBinding;
using System;
using System.Globalization;
using System.Threading.Tasks;

public class LocalDateModelBinder : IModelBinder
{
    public Task BindModelAsync(ModelBindingContext bindingContext)
    {
        var valueProviderResult = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);

        if (valueProviderResult == ValueProviderResult.None)
            return Task.CompletedTask;

        var dateStr = valueProviderResult.FirstValue;

        // 尝试根据特定格式和当前文化信息解析日期字符串
        if (DateTime.TryParse(dateStr, CultureInfo.CurrentCulture, DateTimeStyles.AssumeLocal, out DateTime parsedDate))
        {
            bindingContext.Result = ModelBindingResult.Success(parsedDate);
        }
        else
        {
            bindingContext.ModelState.TryAddModelError(
                bindingContext.ModelName,
                "Invalid date format.");
        }

        return Task.CompletedTask;
    }
}