asp.net-mvc - 将 Visual Studio 2017 MVC View 脚手架更新到 Bootstrap 4

我刚刚将我的 Visual Studio 2017 ASP.NET MVC 5 应用程序从 Bootstrap v3 更新到 v4。我发现当我添加新的编辑部分 View using scaffolding 时，它仍然使用 Bootstrap v3 CSS 类名称作为表单。有没有办法更新脚手架以使用 BS v4？

编辑

我所说的内容似乎有些困惑。

在 Visual Studio 2017 的 MVC 项目中，在解决方案资源管理器中，右键单击 Views folder > Add > View... > MVC 5 View > Click Add 。

这将打开“添加 View ”对话框。我输入 View 名称，选择编辑模板，并在本例中选择 LoginVm作为模型类。 Visual Studio 生成此标记。这个过程称为脚手架。

@model Demo.ViewModels.LoginVm

@using (Html.BeginForm())
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>LoginVm</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">
            @Html.LabelFor(model => model.UserName, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.UserName, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.UserName, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Password, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Password, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Password, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Save" class="btn btn-default" />
            </div>
        </div>
    </div>
}

<div>
    @Html.ActionLink("Back to List", "Index")
</div>

注意正在使用的 Bootstrap 3 类，例如 form-label和col-md-offset-2 。这些在 Bootstrap 4 中被删除。同样，如果您要创建一个新的布局页面，它将生成一个 Bootstrap 3 导航栏，该导航栏在 Bootstrap 4 中无效。

所以我问是否有一种方法(无需编写自定义脚手架)来更新 Visual Studio 以停止输出 Bootstrap 3 特定标记，并且理想情况下，输出 Bootstrap 4 标记？

最佳答案

更新尚不可用，但要在 Visual Studio 2017 中支持 Bootstrap 4 的编辑 View 脚手架，您必须编辑“%ProgramFiles%\Microsoft Visual Studio\2017\Community\”中的文件 Edit.cs.t4 Common7\IDE\Extensions\Microsoft\Web\Mvc\Scaffolding\Templates\MvcView"

将文件重命名为“Edit.cs.backup.t4”
创建一个新文件“Edit.cs.t4”并添加以下代码，这将支持新的 Bootstrap 4 类和表单控件 ( Bootstrap custom forms and controls ):

<#@ template language="C#" HostSpecific="True" #>
<#@ output extension=".cshtml" #>
<#@ include file="Imports.include.t4" #>
@model <#= ViewDataTypeName #>
<#
// "form-control" attribute is only supported for all EditorFor() in System.Web.Mvc 5.1.0.0 or later versions, except for checkbox, which uses a div in Bootstrap
string boolType = "System.Boolean";
Version requiredMvcVersion = new Version("5.1.0.0");
bool isControlHtmlAttributesSupported = MvcVersion >= requiredMvcVersion;
// The following chained if-statement outputs the file header code and markup for a partial view, a view using a layout page, or a regular view.
if(IsPartialView) {
#>

<#
} else if(IsLayoutPageSelected) {
#>

@{
    ViewBag.Title = "<#= ViewName#>";
<#
if (!String.IsNullOrEmpty(LayoutPageFile)) {
#>
    Layout = "<#= LayoutPageFile#>";
<#
}
#>
}

<h2><#= ViewName#></h2>

<#
} else {
#>

@{
    Layout = null;
}

<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <title><#= ViewName #></title>
</head>
<body>
<#
    PushIndent("    ");
}
#>
<#
if (ReferenceScriptLibraries) {
#>
<#
    if (!IsLayoutPageSelected && IsBundleConfigPresent) {
#>
@Scripts.Render("~/bundles/jquery")
@Scripts.Render("~/bundles/jqueryval")

<#
    }
#>
<#
    else if (!IsLayoutPageSelected) {
#>
<script src="~/Scripts/jquery-<#= JQueryVersion #>.min.js"></script>
<script src="~/Scripts/jquery.validate.min.js"></script>
<script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>

<#
    }
#>

<#
}
#>
@using (Html.BeginForm())
{
    @Html.AntiForgeryToken()
    
    
        <h4><#= ViewDataTypeShortName #></h4>
        <hr />
<# 
    if (isControlHtmlAttributesSupported) {
#>
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
<#        
    } else {
#>
        @Html.ValidationSummary(true)
<#      
    }
#>
<#
foreach (PropertyMetadata property in ModelMetadata.Properties) {
    if (property.Scaffold && !property.IsAssociation) {
        if (property.IsPrimaryKey) {
#>
        @Html.HiddenFor(model => model.<#= property.PropertyName #>)

<#
        } else if (!property.IsReadOnly) {
			bool isCheckbox = property.TypeName.Equals(boolType);
#>
        <div class="form-group">
<#
            if (property.IsForeignKey) {
#>
            @Html.LabelFor(model => model.<#= property.PropertyName #>, "<#= GetAssociationName(property) #>", htmlAttributes: new { @class = "col-form-label col-lg-2" })
<#
            } else if (!isCheckbox) {			
#>
            @Html.LabelFor(model => model.<#= property.PropertyName #>, htmlAttributes: new { @class = "col-form-label col-lg-2" })
<#
            }
#>
            <div class="col-lg-10">
<#
            
            if (property.IsForeignKey) {
#>
<# 
            if (isControlHtmlAttributesSupported) {
#>
                @Html.DropDownList("<#= property.PropertyName #>", null, htmlAttributes: new { @class = "form-control" })
<#
            } else {
#>
                @Html.DropDownList("<#= property.PropertyName #>", String.Empty)
<#
            }
#>
<#
            } else  if (isControlHtmlAttributesSupported) {
                if (isCheckbox) {
#>
                <div class="custom-control custom-checkbox">
<#
                    PushIndent("    ");
#>
                @Html.EditorFor(model => model.<#= property.PropertyName #>, new { htmlAttributes = new { @class = "custom-control-input" } })
				@Html.LabelFor(model => model.<#= property.PropertyName #>, htmlAttributes: new { @class = "custom-control-label" })
<#
                } else if (property.IsEnum && !property.IsEnumFlags) {
#>
                @Html.EnumDropDownListFor(model => model.<#= property.PropertyName #>, htmlAttributes: new { @class = "form-control" })
<#
                } else {
#>
                @Html.EditorFor(model => model.<#= property.PropertyName #>, new { htmlAttributes = new { @class = "form-control" } })
<#
                }
            } else {
#>
                @Html.EditorFor(model => model.<#= property.PropertyName #>)
<#
            }
#>
<# 
            if (isControlHtmlAttributesSupported) {
#>
                @Html.ValidationMessageFor(model => model.<#= property.PropertyName #>, "", new { @class = "text-danger" })
<#        
            } else {
#>
                @Html.ValidationMessageFor(model => model.<#= property.PropertyName #>)
<#      
            }
#>
<#
            if (isCheckbox && isControlHtmlAttributesSupported) {
                PopIndent();
#>
                </div>
<#
            }
#>
            </div>
        </div>

<#
        }
    }
}
#>
        <div class="form-group">
			<div class="col-lg-10">
				<input type="submit" value="Save" class="btn btn-primary">
			</div>
		</div>
    
}

<div>
    @Html.ActionLink("Back to List", "Index")
</div>
<#
if(IsLayoutPageSelected && ReferenceScriptLibraries && IsBundleConfigPresent) {
#>

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}
<#
}
#>
<#
else if(IsLayoutPageSelected && ReferenceScriptLibraries) {
#>

<script src="~/Scripts/jquery-<#= JQueryVersion #>.min.js"></script>
<script src="~/Scripts/jquery.validate.min.js"></script>
<script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>
<#
}
#>
<#
// The following code closes the tag used in the case of a view using a layout page and the body and html tags in the case of a regular view page
#>
<#
if(!IsPartialView && !IsLayoutPageSelected) {
    ClearIndent();
#>
</body>
</html>
<#
}
#>
<#@ include file="ModelMetadataFunctions.cs.include.t4" #>

关于asp.net-mvc - 将 Visual Studio 2017 MVC View 脚手架更新到 Bootstrap 4，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/49639302/

asp.net-mvc - 将 Visual Studio 2017 MVC View 脚手架更新到 Bootstrap 4

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