Asp.net mvc 如何将引导下拉样式应用于ASP.NET MVC下拉列表?
以下是从列表中创建下拉列表的MVC razor代码:Asp.net mvc 如何将引导下拉样式应用于ASP.NET MVC下拉列表?,asp.net-mvc,twitter-bootstrap,Asp.net Mvc,Twitter Bootstrap,以下是从列表中创建下拉列表的MVC razor代码: @Html.DropDownList("MyTestList", null, new { @class = "btn btn-default dropdown-toggle" }) 这将创建以下下拉列表: 使用getbootstrap.com中的代码时: <div class="dropdown"> <button class="btn btn-default dropdown-toggle" type="but
@Html.DropDownList("MyTestList", null, new { @class = "btn btn-default dropdown-toggle" })
这将创建以下下拉列表:
使用getbootstrap.com中的代码时:
<div class="dropdown">
<button class="btn btn-default dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown">
Dropdown
<span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu" aria-labelledby="dropdownMenu1">
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">test1</a></li>
<li role="presentation"><a role="menuitem" tabindex="-1" href="#">test2</a></li>
</ul>
</div>
下拉列表
它将显示如下下拉列表:
问题:
使用
@Html.DropDownList
时是否可能获得与使用MVC中的Html代码时相同的外观?不可能使用Razor的@Html.DropDownList()
方法创建您提到的引导下拉列表。尽管创建自己的HTML帮助程序非常简单,可以呈现创建上述下拉列表所需的代码
有很多教程和指南()将引导您完成创建自定义HTML帮助程序的过程。它们真的不难创建,可以帮助您加快开发速度并鼓励代码重用
更新:
public class BootstrapHtml
{
public static MvcHtmlString Dropdown(string id, List<SelectListItem> selectListItems, string label)
{
var button = new TagBuilder("button")
{
Attributes =
{
{"id", id},
{"type", "button"},
{"data-toggle", "dropdown"}
}
};
button.AddCssClass("btn");
button.AddCssClass("btn-default");
button.AddCssClass("dropdown-toggle");
button.SetInnerText(label);
button.InnerHtml += " " + BuildCaret();
var wrapper = new TagBuilder("div");
wrapper.AddCssClass("dropdown");
wrapper.InnerHtml += button;
wrapper.InnerHtml += BuildDropdown(id, selectListItems);
return new MvcHtmlString(wrapper.ToString());
}
private static string BuildCaret()
{
var caret = new TagBuilder("span");
caret.AddCssClass("caret");
return caret.ToString();
}
private static string BuildDropdown(string id, IEnumerable<SelectListItem> items)
{
var list = new TagBuilder("ul")
{
Attributes =
{
{"class", "dropdown-menu"},
{"role", "menu"},
{"aria-labelledby", id}
}
};
var listItem = new TagBuilder("li");
listItem.Attributes.Add("role", "presentation");
items.ForEach(x => list.InnerHtml += "<li role=\"presentation\">" + BuildListRow(x) + "</li>");
return list.ToString();
}
private static string BuildListRow(SelectListItem item)
{
var anchor = new TagBuilder("a")
{
Attributes =
{
{"role", "menuitem"},
{"tabindex", "-1"},
{"href", item.Value}
}
};
anchor.SetInnerText(item.Text);
return anchor.ToString();
}
}
@using (Html.BeginForm("", "", FormMethod.Post))
{
var items = new List<SelectListItem>()
{
new SelectListItem() { Text = "Item 1", Value = "#" },
new SelectListItem() { Text = "Item 2", Value = "#" },
};
<div class="form-group">
@Html.Label("Before", new { @class = "col-md-2 control-label" })
<div class="col-md-10">
@Html.DropDownList("Name", items, "Dropdown", new { @class = "form-control"})
</div>
</div>
<br/>
<br/>
<br/>
<div class="form-group">
@Html.Label("After", new { @class = "col-md-2 control-label" })
<div class="col-md-10">
@BootstrapHtml.Dropdown("dropdownMenu1", items, "Dropdown")
</div>
</div>
}
考虑到这个问题的关注度和下面(不正确的)答案的得票率,这里有一个早就应该得到的(一年半!)代码示例,用一张图片来演示它们之间的差异
您可以将此代码复制并粘贴到您的解决方案中,它应该可以工作
代码:
public class BootstrapHtml
{
public static MvcHtmlString Dropdown(string id, List<SelectListItem> selectListItems, string label)
{
var button = new TagBuilder("button")
{
Attributes =
{
{"id", id},
{"type", "button"},
{"data-toggle", "dropdown"}
}
};
button.AddCssClass("btn");
button.AddCssClass("btn-default");
button.AddCssClass("dropdown-toggle");
button.SetInnerText(label);
button.InnerHtml += " " + BuildCaret();
var wrapper = new TagBuilder("div");
wrapper.AddCssClass("dropdown");
wrapper.InnerHtml += button;
wrapper.InnerHtml += BuildDropdown(id, selectListItems);
return new MvcHtmlString(wrapper.ToString());
}
private static string BuildCaret()
{
var caret = new TagBuilder("span");
caret.AddCssClass("caret");
return caret.ToString();
}
private static string BuildDropdown(string id, IEnumerable<SelectListItem> items)
{
var list = new TagBuilder("ul")
{
Attributes =
{
{"class", "dropdown-menu"},
{"role", "menu"},
{"aria-labelledby", id}
}
};
var listItem = new TagBuilder("li");
listItem.Attributes.Add("role", "presentation");
items.ForEach(x => list.InnerHtml += "<li role=\"presentation\">" + BuildListRow(x) + "</li>");
return list.ToString();
}
private static string BuildListRow(SelectListItem item)
{
var anchor = new TagBuilder("a")
{
Attributes =
{
{"role", "menuitem"},
{"tabindex", "-1"},
{"href", item.Value}
}
};
anchor.SetInnerText(item.Text);
return anchor.ToString();
}
}
@using (Html.BeginForm("", "", FormMethod.Post))
{
var items = new List<SelectListItem>()
{
new SelectListItem() { Text = "Item 1", Value = "#" },
new SelectListItem() { Text = "Item 2", Value = "#" },
};
<div class="form-group">
@Html.Label("Before", new { @class = "col-md-2 control-label" })
<div class="col-md-10">
@Html.DropDownList("Name", items, "Dropdown", new { @class = "form-control"})
</div>
</div>
<br/>
<br/>
<br/>
<div class="form-group">
@Html.Label("After", new { @class = "col-md-2 control-label" })
<div class="col-md-10">
@BootstrapHtml.Dropdown("dropdownMenu1", items, "Dropdown")
</div>
</div>
}
公共类BootstrapHtml
{
公共静态MvcHtmlString下拉列表(字符串id、列表selectListItems、字符串标签)
{
var按钮=新标记生成器(“按钮”)
{
属性=
{
{“id”,id},
{“类型”,“按钮”},
{“数据切换”,“下拉列表”}
}
};
按钮。添加CSSClass(“btn”);
按钮。添加CSSClass(“btn默认值”);
按钮。AddCssClass(“下拉切换”);
按钮。SetInnerText(标签);
button.InnerHtml+=“”+BuildCaret();
var wrapper=新标记生成器(“div”);
wrapper.AddCssClass(“下拉列表”);
wrapper.InnerHtml+=按钮;
wrapper.InnerHtml+=BuildDropdown(id,selectListItems);
返回新的MvcHtmlString(wrapper.ToString());
}
私有静态字符串BuildCaret()
{
var插入符号=新标记生成器(“span”);
插入符号。添加CSSClass(“插入符号”);
返回插入符号ToString();
}
私有静态字符串构建下拉列表(字符串id,IEnumerable项)
{
var列表=新标记生成器(“ul”)
{
属性=
{
{“类”,“下拉菜单”},
{“角色”,“菜单”},
{“aria labelledby”,id}
}
};
var listItem=新标记生成器(“li”);
添加(“角色”、“演示文稿”);
items.ForEach(x=>list.InnerHtml+=““+BuildListRow(x)+“ ”;
return list.ToString();
}
私有静态字符串BuildListRow(SelectListItem项)
{
var anchor=新标记生成器(“a”)
{
属性=
{
{“角色”、“菜单项”},
{“tabindex”,“-1”},
{“href”,item.Value}
}
};
anchor.SetInnerText(item.Text);
返回anchor.ToString();
}
}
用法:
public class BootstrapHtml
{
public static MvcHtmlString Dropdown(string id, List<SelectListItem> selectListItems, string label)
{
var button = new TagBuilder("button")
{
Attributes =
{
{"id", id},
{"type", "button"},
{"data-toggle", "dropdown"}
}
};
button.AddCssClass("btn");
button.AddCssClass("btn-default");
button.AddCssClass("dropdown-toggle");
button.SetInnerText(label);
button.InnerHtml += " " + BuildCaret();
var wrapper = new TagBuilder("div");
wrapper.AddCssClass("dropdown");
wrapper.InnerHtml += button;
wrapper.InnerHtml += BuildDropdown(id, selectListItems);
return new MvcHtmlString(wrapper.ToString());
}
private static string BuildCaret()
{
var caret = new TagBuilder("span");
caret.AddCssClass("caret");
return caret.ToString();
}
private static string BuildDropdown(string id, IEnumerable<SelectListItem> items)
{
var list = new TagBuilder("ul")
{
Attributes =
{
{"class", "dropdown-menu"},
{"role", "menu"},
{"aria-labelledby", id}
}
};
var listItem = new TagBuilder("li");
listItem.Attributes.Add("role", "presentation");
items.ForEach(x => list.InnerHtml += "<li role=\"presentation\">" + BuildListRow(x) + "</li>");
return list.ToString();
}
private static string BuildListRow(SelectListItem item)
{
var anchor = new TagBuilder("a")
{
Attributes =
{
{"role", "menuitem"},
{"tabindex", "-1"},
{"href", item.Value}
}
};
anchor.SetInnerText(item.Text);
return anchor.ToString();
}
}
@using (Html.BeginForm("", "", FormMethod.Post))
{
var items = new List<SelectListItem>()
{
new SelectListItem() { Text = "Item 1", Value = "#" },
new SelectListItem() { Text = "Item 2", Value = "#" },
};
<div class="form-group">
@Html.Label("Before", new { @class = "col-md-2 control-label" })
<div class="col-md-10">
@Html.DropDownList("Name", items, "Dropdown", new { @class = "form-control"})
</div>
</div>
<br/>
<br/>
<br/>
<div class="form-group">
@Html.Label("After", new { @class = "col-md-2 control-label" })
<div class="col-md-10">
@BootstrapHtml.Dropdown("dropdownMenu1", items, "Dropdown")
</div>
</div>
}
@使用(Html.BeginForm(“,”,FormMethod.Post))
{
var items=新列表()
{
新建SelectListItem(){Text=“Item 1”,Value=“#”},
新建SelectListItem(){Text=“Item 2”,Value=“#”},
};
@Label(“Before”,new{@class=“col-md-2控制标签”})
@DropDownList(“Name”,items,“Dropdown”,new{@class=“form control”})
@Label(“After”,new{@class=“col-md-2控制标签”})
@BootstrapHtml.Dropdown(“dropdownMenu1”,项,“Dropdown”)
}
您只需添加@class=“表单控件”。它很好用。但我也将其封装在一个Html.beginform()中 这是非常可能的,而且非常简单。请阅读: 您所需要的只是:
@Html.DropDownList("movieGenre", "All", new { @class = "form-control"})
或
添加@class=“form control”
不适用于@Html.DropDownListFor
。也就是说,您可以通过复制其他“表单控件”
输入的样式(例如通过开发人员工具),然后将@Html.DropDownListFor
包装在一个div
中,您可以给它一个id(例如#我的选择器
)。设置div的子项的样式,例如:#我的选择器
>选择{…正常引导表单控件样式}尝试以下代码:
@Html.DropDownListFor(model => model.MovieGenreModel, SelectList,
new { @class = "form-control",aria_describedby="dropdownMenu1"})
我有一个在ASP.net MVC中运行的引导按钮,其中有一个我在当前工作地点使用的真实示例
<div class="dropdown" style="display:inline-block">
<button class="btn btn-warning dropdown-toggle" type="button" data-toggle="dropdown" value="@Model.Id" runat="server"><span class="glyphicon glyphicon-user"></span> Assign <span class="caret"></span></button>
<ul class="dropdown-menu" onclick="location.href='@Url.Action("AssignTicket", "Home", new {AssignId = Model.Id })'">
@foreach (var user in (IEnumerable<SelectListItem>)ViewBag.User)
{
<li>@user.Text</li>
}
</ul>
</div>
分配
@foreach(在(IEnumerable)ViewBag.user中的变量用户)
{
- @用户文本
}
View.user直接从数据库获取用户名。
Jope这正是你们中的一些人想要的。类似于Html.DropDownList的扩展方法将有助于创建所需的Html输出。我使用了相同的代码,但它不适用于我。我在标签中加入了bootstrap,并添加了以下代码:Dropdown
你知道为什么吗?如果可能的话,我总是尝试包含一个代码示例,但是在这个例子中,我的时间紧迫。如果一个代码示例可以帮助您,那么我很高兴