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57 lines
1.8 KiB
C#
57 lines
1.8 KiB
C#
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using System;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Mvc.ModelBinding;
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using WalkingTec.Mvvm.Core;
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namespace WalkingTec.Mvvm.Mvc.Binders
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{
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/// <summary>
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/// DateRangeBinder
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/// DataRange model binding
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/// </summary>
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public class DateRangeBinder : IModelBinder
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{
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/// <summary>
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/// BindModelAsync
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/// </summary>
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/// <param name="bindingContext"></param>
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/// <returns></returns>
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public Task BindModelAsync(ModelBindingContext bindingContext)
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{
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if (bindingContext == null)
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{
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throw new ArgumentNullException(nameof(bindingContext));
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}
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var modelName = bindingContext.ModelName;
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if (string.IsNullOrEmpty(modelName))
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{
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bindingContext.Result = ModelBindingResult.Success(null);
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return Task.CompletedTask;
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}
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var valueProviderResult = bindingContext.ValueProvider.GetValue(modelName);
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if (valueProviderResult == ValueProviderResult.None)
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{
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modelName += "[Value]";
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valueProviderResult = bindingContext.ValueProvider.GetValue(modelName);
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}
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if (valueProviderResult == ValueProviderResult.None)
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return Task.CompletedTask;
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bindingContext.ModelState.SetModelValue(modelName, valueProviderResult);
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var value = valueProviderResult.FirstValue;
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if (string.IsNullOrEmpty(value))
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{
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return Task.CompletedTask;
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}
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if(DateRange.TryParse(value,out var dateRange))
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bindingContext.Result = ModelBindingResult.Success(dateRange);
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return Task.CompletedTask;
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}
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}
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}
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