如何在Razor中创建else if语句？

Question

我试图在表格中显示一些行.根据UserGroup,View应显示不同的标记.管理员可以删除行,但主持人只能将其标记为可见或不可见.

如何在Razor中写一个正确的if else语句？

页面显示正确,但页面标题为Parse Error

这是我的代码:

@model MvcApplication3.Models.ViewModels.New.Question.MatrixRows

@{
    bool visible = Model.Visible;
}

<tr>
    <td>
    @if(visible) 
        {
        @Html.TextBoxFor(cn => Model.Row_Number, new { @class = "row required digits", size = 1 })
        }
    @if (!visible)
        {
        @Html.TextBoxFor(cn => Model.Row_Number, new { @class = "row required digits", size = 1, disabled = "disabled" })
        }
    </td>
    <td>
    @if(visible) 
        {
            @Html.TextBoxFor(bs => Model.Row_Description, new { @class = "rowdesc", size = 45 })
        }
    @if (!visible)
    {
        @Html.TextBoxFor(bs => Model.Row_Description, new { @class = "rowdesc", size = 45, disabled = "disabled" })
    }
    </td>
    <td>
        @if (HttpContext.Current.User.IsInRole("Administrator"))
        {
            @Html.HiddenFor(x => x.Delete, new { @class = "mark-for-delete" })
            @Html.LinkToRemoveNestedForm("Slet", "tr", "input.mark-for-delete")    
        }
        @if (HttpContext.Current.User.IsInRole("Moderator"))
        {
            @Html.HiddenFor(x => x.Visible, new { @class = "mark-for-visible" })
            @Html.LinkToDisableNestedForm("Deaktiver", "tr", "input.mark-for-visible")    
        }
        @Html.HiddenFor(id => Model.Row_Id)
    </td>
</tr>

Answer 1

标题有解析错误,因为您没有设置标题:

@{
    ViewBag.Title = "Home Page";
}

现在对于else语句,不要使用返回@语法:

@if(visible) 
{
    Html.TextBoxFor(bs => Model.Row_Description, new { @class = "rowdesc", size = 45 })
}
else
{
    Html.TextBoxFor(bs => Model.Row_Description, new { @class = "rowdesc", size = 45, disabled = "disabled" })
}

你正在检查一个布尔值,你只需要一个其他的.同样else if,它的工作方式相同.

只需执行以下操作即可简化您的代码:

@Html.TextBoxFor(bs => Model.Row_Description, new { @class = "rowdesc", size = 45, disabled = visible ? "" : "disabled" })

因为您正在显示相同的代码,只需根据值更改属性.对我而言,这变得更具可读性.

Answer 2

因为问题是否如果在剃须刀中,我将其用于搜索引擎优化目的

在视野中

@{
    if (ViewBag.Option == "Mobiles")
{
    ViewBag.Title = "Mobiles";
    ViewBag.Description = "Mobiles";
    ViewBag.Keywords = "Mobiles";

}

   else if (ViewBag.Option == "holiday")
{
    ViewBag.Title = "holiday";
    ViewBag.Description = "holiday.";
    ViewBag.Keywords = "holiday";
}


else
    {
        ViewBag.Title = "home";
        ViewBag.Description = "home";
        ViewBag.Keywords = "home";
    }

}

希望帮助某人.

Answer 3

您只需使用else 而无需预先添加@. 但是，我认为这不是您的页面标题的问题。也许您需要设置ViewBag.Title属性？您的布局页面可能取决于它的设置。

@if(visible) 
    {
    @Html.TextBoxFor(cn => Model.Row_Number, new { @class = "row required digits", size = 1 })
    }
else
    {
    @Html.TextBoxFor(cn => Model.Row_Number, new { @class = "row required digits", size = 1, disabled = "disabled" })
    }

标题问题：

@{
    bool visible = Model.Visible;
    ViewBag.Title = "My Title;
}