如何限制MVC中文本框中的字符长度？

Question

I would like to limit a textbox to 10 characters in MVC.

<label ID="lbl2" runat="server" Width="20px"></label>
<%=Html.TextBox("polNum") %>    
<label ID="lbl1" runat="server" Width="10px"></label>

I know you can set the Max Length property in .net. How do I do that in MVC with a textbox generated this way?

Answer 1

You need to set some html properties... something like:

<%=Html.TextBox("polNum",null, new {maxlength=10}) %>   

good luck

Answer 2

Do it in plain HTML:

<%= Html.TextBox("polNum", null, new { @maxlength = "25" }) %>

(The null parameter is because you don't want a default value...)

Answer 3

<%=Html.TextBox("polNum", new { maxlength = 10 }) %>

http://msdn.microsoft.com/en-us/library/dd492984.aspx

HtmlHelper uses reflection to examine the anonymous type. It converts the fields of the type into attributes on the, in this case, TextBox control. The resulting HTML looks like

<Textbox id="polNum" maxlength =10 />

You can use the anonymous type to add other relevant attributes, such as

new { @class = "MyCssClass", type = "password", value="HurrDurr", 
      textmode="multiline" }

Answer 4

使用获取Html属性的TextBox方法的重载 ：

Html.TextBox( "polNum", "value", new { maxlength="10" } );

Answer 5

使用以下html设置TextBox的最大长度，在Html.TextBox中，第二个参数是textbox的值，因此，您可以传递“”或null

   <%=Html.TextBox("polNum", "", new { maxlength = 10 }) %>

Answer 6

@Html.EditorFor(model => model.Telephone, new { htmlAttributes = new { @class = "form-control", @maxlength = "10" } })

Here i use html.Editor (do not use Textboxfor) For and i am use the Telephone number field in my database. i do not want the user to type more than ten numbers for telephone.