如何在asp.net mvc 5的编辑器字段中只允许输入正数

public class YourModel
{
    [RegularExpression(@"^\d*\.?\d+$", ErrorMessage = "只允许输入正数")]
    public decimal PositiveNumber { get; set; }
}

@model YourModel

@using (Html.BeginForm())
{
    @Html.LabelFor(m => m.PositiveNumber)
    @Html.EditorFor(m => m.PositiveNumber)
    @Html.ValidationMessageFor(m => m.PositiveNumber)

    <input type="submit" value="提交" />
}

[HttpPost]
public ActionResult YourAction(YourModel model)
{
    if (ModelState.IsValid)
    {
        // 执行其他操作
        return RedirectToAction("Success");
    }

    return View(model);
}