第 1 步:为简单兴趣创建模型
namespace CalculateSimpleInterest.Models  
{  
    public class SimpleInterestModel  
    {  
        public decimal Amount { get; set; }  
        public decimal Rate { get; set; }  
        public int Year { get; set; }  
    }  
}  
第 2 步:创建一个在 UI 上呈现视图的操作方法
我们正在传递一个空模型以绑定到视图。
public ActionResult SimpleInterest()  
{  
    SimpleInterestModel model = new SimpleInterestModel();  
    return View(model);  
} 
第 3 步:创建强类型视图
@model CalculateSimpleInterest.Models.SimpleInterestModel  
@{  
    ViewBag.Title = "SimpleInterest";  
}  
<h2>Calulate Simple Interest</h2>  
@using (Ajax.BeginForm("CalculateSimpleInterestResult","CalculateSimpleInterest",  
                            new AjaxOptions { UpdateTargetId = "divInterestDeatils" }))  
    {  
    <fieldset>  
        <legend>Calulate Simple Interest</legend>  
        <div id="divInterestDeatils"></div>  
        <div class="editor-label">  
            @Html.LabelFor(model => model.Amount)  
        </div>  
        <div class="editor-field">  
            @Html.EditorFor(model => model.Amount)            
        </div>  
        <div class="editor-label">  
            @Html.LabelFor(model => model.Rate)  
        </div>  
        <div class="editor-field">  
            @Html.EditorFor(model => model.Rate)            
        </div>  
        <div class="editor-label">  
            @Html.LabelFor(model => model.Year)  
        </div>  
        <div class="editor-field">  
            @Html.EditorFor(model => model.Year)             
        </div>  
        <p>  
            <input type="submit" value="Calculate" />  
        </p>  
    </fieldset>  
}  
@section Scripts {  
    @Scripts.Render("~/bundles/jqueryval")  
}  
第 4 步:创建一个处理 POST 请求并处理数据的操作方法
在 action 方法中,我们传递一个模型作为参数。该模型具有 UI 输入字段数据。这里我们不需要解析,也不需要编写额外的代码。
[HttpPost]  
public ActionResult CalculateSimpleInterestResult(SimpleInterestModel model)  
{  
    decimal simpleInteresrt = (model.Amount*model.Year*model.Rate)/100;  
    StringBuilder sbInterest = new StringBuilder();  
    sbInterest.Append("<b>Amount :</b> " + model.Amount+"<br/>");  
    sbInterest.Append("<b>Rate :</b> " + model.Rate + "<br/>");  
    sbInterest.Append("<b>Time(year) :</b> " + model.Year + "<br/>");  
    sbInterest.Append("<b>Interest :</b> " + simpleInteresrt);  
    return Content(sbInterest.ToString());  
}