我有这个带有price属性的视图模型类。
问题是,如果用户输入值$200,150.90
,则表示未格式化并发送给控制器。
对于十进制的默认模型格式化程序可能有什么问题?
public ItemViewModel
{
public string Name {get;set;}
[DisplayFormat(DataFormatString = "{0:c}")]
[RegularExpression(@"^\$?([0-9]{1,3},([0-9]{3},)*[0-9]{3}|[0-9]+)(.[0-9][0-9])?$"
ErrorMessage = "Enter a valid money value. 2 Decimals only allowed")]
public decimal? Price{ get; set; }
}
在视图中
@model ItemViewModel
@Html.TextBoxFor(m=>m.Price)
在控制器
中public ActionResult Save(ItemViewModel model)
{
// model.Price is always null, even if it has value $200,150.90
}
我已在Global.asax
ModelBinders.Binders.Add(typeof(decimal?), new DecimalModelBinder());
public object BindModel(ControllerContext controllerContext,
ModelBindingContext bindingContext)
{
ValueProviderResult valueResult = bindingContext.ValueProvider
.GetValue(bindingContext.ModelName);
ModelState modelState = new ModelState { Value = valueResult };
object actualValue = null;
try
{
actualValue = Convert.ToDecimal(valueResult.AttemptedValue,
CultureInfo.CurrentCulture);
}
catch (FormatException e)
{
modelState.Errors.Add(e);
}
bindingContext.ModelState.Add(bindingContext.ModelName, modelState);
return actualValue;
}
模型绑定器中的错误Input string was not in a correct format
Convert.ToDecimal("$200,150.90",CultureInfo.CurrentCulture)
答案 0 :(得分:0)
如果格式为货币,则添加额外的十进制转换
感谢Convert currency string to decimal?
string currencyDisplayFormat=(bindingContext.ModelMetadata).DisplayFormatString;
if (!string.IsNullOrEmpty(currencyDisplayFormat)
&& currencyDisplayFormat == "{0:c}")
{
actualValue = Decimal.Parse(valueResult.AttemptedValue,
NumberStyles.AllowCurrencySymbol | NumberStyles.Number,
CultureInfo.CurrentCulture);
}
else
{
actualValue = Convert.ToDecimal(valueResult.AttemptedValue,
CultureInfo.CurrentCulture);
}