Working with Forms and Controls - HTML5 Programming for ASP.NET Developers - page 130

Figure 5-10. The TextMode property supports the new input types.
At runtime, the ASP.NET framework converts the TextMode setting to the appropriate input type
attribute. Note that you can also set the type attribute directly in the <asp:TextBox> markup tag to get the
same effect. However, the recommended way is to set the TextMode property. Of course, nothing prevents
you from using a plain HTML5 <input> tag with the required setting for its type attribute. But if you wish to
access the text box from the server-side code, then chances are you should use the TextBox server control.
If you wish to set attributes such as min , max , and step , you need add them directly to the
<asp:TextBox> markup tag as shown here:
<asp:TextBox ID="TextBox1" runat="server" TextMode="Number"
min="18" max="100" step="2">
</asp:TextBox>
n Note If you're using Visual Studio 2010, you may need to install the latest Service Pack to be able to use the
new input types.
Using the New Input Types in MVC Views
In MVC views, things are bit easier when it comes to using the new HTML5 input types. Because MVC
views rely directly on the HTML markup rather than server controls, you can easily use <input> tags as
discussed earlier. If you prefer to use HTML helpers instead of raw HTML markup, you can use the new
input types as follows:
<%= Html.TextBox("txtNumber","18",new {type="number",min="18",max="100"}) %>
As you can see, the TextBox helper takes three parameters: the name of the resulting <input> element,
its default value, and an object representing additional HTML attributes that need to be added to the
element. In this example, you set the type , min , and max attributes.