HTML扩展类的所有方法都有2个参数:
以textbox为例子
public static string TextBox( this HtmlHelper htmlHelper, string name, Object value, IDictionary<string, Object> htmlAttributes )
public static string TextBox( this HtmlHelper htmlHelper, string name, Object value, Object htmlAttributes )
这2个参数代表这个html标签的属性集合。使用方法如下。
1.ActionLink
<%=Html.ActionLink("这是一个连接", "Index", "Home")%> 带有QueryString的写法 <%=Html.ActionLink("这是一个连接", "Index", "Home", new { page=1 },null)%> <%=Html.ActionLink("这是一个连接", "Index", new { page=1 })%> 有其它Html属性的写法 <%=Html.ActionLink("这是一个连接", "Index", "Home", new { id="link1" })%> <%=Html.ActionLink("这是一个连接", "Index",null, new { id="link1" })%> QueryString与Html属性同时存在 <%=Html.ActionLink("这是一个连接", "Index", "Home", new { page = 1 }, new { id = "link1" })%> <%=Html.ActionLink("这是一个连接", "Index" , new { page = 1 }, new { id = "link1" })%> 生成结果为: <a href="/">这是一个连接</a> 带有QueryString的写法 <a href="/?page=1">这是一个连接</a> <a href="/?page=1">这是一个连接</a> 有其它Html属性的写法 <a href="/?Length=4" id="link1">这是一个连接</a> <a href="/" id="link1">这是一个连接</a> QueryString与Html属性同时存在 <a href="/?page=1" id="link1">这是一个连接</a> <a href="/?page=1" id="link1">这是一个连接</a>
2.RouteLink
跟ActionLink在功能上一样。 <%=Html.RouteLink("关于", "about", new { })%> 带QueryString <%=Html.RouteLink("关于", "about", new { page = 1 })%> <%=Html.RouteLink("关于", "about", new { page = 1 }, new { id = "link1" })%> 生成结果: <a href="/about">关于</a> <a href="/about?page=1">关于</a> <a href="/about?page=1" id="link1">关于</a>
<%using(Html.BeginForm("index","home",FormMethod.Post)){%> <%} %> <%Html.BeginForm("index", "home", FormMethod.Post);//注意这里没有=输出%> <%Html.EndForm(); %> 生成结果: <form action="/home/index" method="post"></form>
4.TextBox , Hidden ,
<%=Html.TextBox("input1") %> <%=Html.TextBox("input2",Model.CategoryName,new{ @style = "width:300px;" }) %> <%=Html.TextBox("input3", ViewData["Name"],new{ @style = "width:300px;" }) %> <%=Html.TextBoxFor(a => a.CategoryName, new { @style = "width:300px;" })%> 生成结果: <input id="input1" name="input1" type="text" value="" /> <input id="input2" name="input2" style="width:300px;" type="text" value="Beverages" /> <input id="input3" name="input3" style="width:300px;" type="text" value="" /> <input id="CategoryName" name="CategoryName" style="width:300px;" type="text" value="Beverages" />
<%=Html.TextArea("input5", Model.CategoryName, 3, 9,null)%> <%=Html.TextAreaFor(a => a.CategoryName, 3, 3, null)%> 生成结果: <textarea cols="9" id="input5" name="input5" rows="3">Beverages</textarea> <textarea cols="3" id="CategoryName" name="CategoryName" rows="3">Beverages</textarea>
<%=Html.CheckBox("chk1",true) %> <%=Html.CheckBox("chk1", new { @class="checkBox"}) %> <%=Html.CheckBoxFor(a =>a.IsVaild, new { @class = "checkBox" })%> 生成结果: <input checked="checked" id="chk1" name="chk1" type="checkbox" value="true" /><input name="chk1" type="hidden" value="false" /> <input class="checkBox" id="chk1" name="chk1" type="checkbox" value="true" /><input name="chk1" type="hidden" value="false" /> <input checked="checked" class="checkBox" id="IsVaild" name="IsVaild" type="checkbox" value="true" /><input name="IsVaild" type="hidden" value="false" />
<%=Html.ListBox("lstBox1",(SelectList)ViewData["Categories"])%> <%=Html.ListBoxFor(a => a.CategoryName, (SelectList)ViewData["Categories"])%> 生成结果: <select id="lstBox1" multiple="multiple" name="lstBox1"> <option value="1">Beverages</option> <option value="2">Condiments</option> <option selected="selected" value="3">Confections</option> <option value="4">Dairy Products</option> <option value="5">Grains/Cereals</option> <option value="6">Meat/Poultry</option> <option value="7">Produce</option> <option value="8">Seafood</option> </select> <select id="CategoryName" multiple="multiple" name="CategoryName"> <option value="1">Beverages</option> <option value="2">Condiments</option> <option value="3">Confections</option> <option value="4">Dairy Products</option> <option value="5">Grains/Cereals</option> <option value="6">Meat/Poultry</option> <option value="7">Produce</option> <option value="8">Seafood</option> </select>
<%= Html.DropDownList("ddl1", (SelectList)ViewData["Categories"], "--Select One--")%> <%=Html.DropDownListFor(a => a.CategoryName, (SelectList)ViewData["Categories"], "--Select One--", new { @class = "dropdownlist" })%> 生成结果: <select id="ddl1" name="ddl1"> <option value="">--Select One--</option> <option value="1">Beverages</option> <option value="2">Condiments</option> <option selected="selected" value="3">Confections</option> <option value="4">Dairy Products</option> <option value="5">Grains/Cereals</option> <option value="6">Meat/Poultry</option> <option value="7">Produce</option> <option value="8">Seafood</option> </select> <select class="dropdownlist" id="CategoryName" name="CategoryName"> <option value="">--Select One--</option> <option value="1">Beverages</option> <option value="2">Condiments</option> <option value="3">Confections</option> <option value="4">Dairy Products</option> <option value="5">Grains/Cereals</option> <option value="6">Meat/Poultry</option> <option value="7">Produce</option> <option value="8">Seafood</option> </select>
webform里叫自定义控件。功能都是为了复用。但使用上自定义控件真的很难用好。 <% Html.RenderPartial("DinnerForm"); %> 看清楚了没有等号的。