如何创建if语句，还有一个在剃刀？ [英] how to create an else if statement in Razor?

问题描述

我想在一个表中显示某些行。根据不同的用户组，查看应该表现出不同的标记。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。

我怎样写正确的，如果在剃刀else语句？

正确显示网页，但网页标题为解析错误

这是我的code：

  @model MvcApplication3.Models.ViewModels.New.Question.MatrixRows@ {
    bool的可见= Model.Visible;
}＆所述; TR＆GT;
    ＆所述; TD＆GT;
    @if（可见）
        {
        @ Html.TextBoxFor（CN =＆GT; Model.Row_Number，新{@class =行所需要的数字，大小= 1}）
        }
    @if（！可见）
        {
        @ Html.TextBoxFor（CN =＆GT; Model.Row_Number，新{@class =行所需要的数字，大小= 1，禁用=禁用}）
        }
    ＆LT; / TD＆GT;
    ＆所述; TD＆GT;
    @if（可见）
        {
            @ Html.TextBoxFor（BS =＆GT; Model.Row_Description，新{@class =rowdesc，大小= 45}）
        }
    @if（！可见）
    {
        @ Html.TextBoxFor（BS =＆GT; Model.Row_Description，新{@class =rowdesc，大小= 45，禁用=禁用}）
    }
    ＆LT; / TD＆GT;
    ＆所述; TD＆GT;
        @if（HttpContext.Current.User.IsInRole（管理员））
        {
            @ Html.HiddenFor（X =＆GT; x.Delete，新{@class =标志换删除}）
            @ Html.LinkToRemoveNestedForm（Slet，TR，input.mark换删除）
        }
        @if（HttpContext.Current.User.IsInRole（版主））
        {
            @ Html.HiddenFor（X =＆GT; x.Visible，新{@class =标记为可见}）
            @ Html.LinkToDisableNestedForm（Deaktiver，TR，input.mark换可见）
        }
        @ Html.HiddenFor（ID =＆GT; Model.Row_Id）
    ＆LT; / TD＆GT;
＆LT; / TR＆GT;
 

解决方案

标题有解析错误，因为你没有设置一个标题：

  @ {
    ViewBag.Title =主页;
}
 

现在一个else语句，不要使用背面的 @ 语法：

  @if（可见光）
{
    Html.TextBoxFor（BS =＆GT; Model.Row_Description，新{@class =rowdesc，大小= 45}）
}
其他
{
    Html.TextBoxFor（BS =＆GT; Model.Row_Description，新{@class =rowdesc，大小= 45，禁用=禁用}）
}
 

您正在检查一个布尔值，你只需要一个人。也为否则，如果，它的工作原理是一样的。

您code可由只是做更简单：

  @ Html.TextBoxFor（BS =＆GT; Model.Row_Description，新{@class =rowdesc，大小= 45，禁用=可见的？：已禁用}）
 

由于你反正显示相同code，只是改变基于值的属性。对我来说，这将成为更具可读性。

I am trying to display some rows in a table. Depending on the UserGroup, the View should show different markup. An administrator can delete rows, but a moderator can only mark them as visible or invisible.

How do i write a proper if else statement in Razor?

The page is displayed correctly, but the page title is Parse Error

This is my code:

@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>

解决方案

The title has parse error because you did not set a title:

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

now for an else statement, don't use back the @ syntax:

@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" })
}

You are checking for a boolean, you just need an else. Also for else if, it works the same.

Your code could be simplified even more by just doing:

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

Because you are displaying the same code anyways, just changing the attribute based on a value. To me, this becomes more readable.

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