ASP MVC Razor在输入占位符中编码特殊字符

时间:2013-03-06 11:42:57

标签: razor asp.net-mvc-4 placeholder

这是我的代码:

型号:

[Required]
[DataType(DataType.Text)]
[Display(Name = "Your company's name")]
public string CompanyName { get; set; }

查看:

@Html.TextBoxFor(m => m.CompanyName, new { @class = "account-input", @placeholder = @Html.DisplayNameFor(m => m.CompanyName), @id = "companyname" })

它将呈现如下:

  

贵公司的名字

html输出:

<input class="account-input" data-val="true" data-val-required="The Your company's name field is required." id="companyname" name="CompanyName" placeholder="Your company&amp;#39;s name" type="text" value="">

它应该是这样的:

  

贵公司的名称

为什么文字无法正确呈现?如何防止这种情况?

我已经尝试过了:

@Html.TextBoxFor(m => m.CompanyName, new { @class = "account-input", @placeholder = @Html.Raw(@Html.DisplayNameFor(m => m.CompanyName)), @id = "companyname" })

和这个

@Html.TextBoxFor(m => m.CompanyName, new { @class = "account-input", @placeholder = @Html.Encode(@Html.DisplayNameFor(m => m.CompanyName)), @id = "companyname" })

3 个答案:

答案 0 :(得分:42)

我认为这篇文章会对你有所帮助:

HTML encode decode c# MVC4

我认为还有其他方法可以解决此问题,但这是使用TextBox的一个选项:

@Html.TextBox("CompanyName", HttpUtility.HtmlEncode("Your company&#39;s name"))

还有HttpUtility.HtmlDecode,这可能有助于我们的保存操作。

<强>更新

如果你在占位符周围包裹HttpUtility.HtmlDecode

@Html.TextBoxFor(m => m.CompanyName, new { @class = "account-input", 
@placeholder = HttpUtility.HtmlDecode(Html.DisplayNameFor(x => x.CompanyName).ToHtmlString()), 
@id = "companyname" })

占位符返回为:     placeholder =“你公司的名字”

答案 1 :(得分:4)

这是一个帮助器displayplaceholder,它将显示占位符而不进行编码。

http://www.davidberube.me/displayplaceholderfor-mvc-placeholder-for-special-characters/

- 编辑 -

public static partial class Extensions
{
   public static MvcHtmlString DisplayPlaceHolderFor<TModel, TValue>(this HtmlHelper<TModel> html, Expression<Func<TModel, TValue>> expression)
   {
      var result = html.DisplayNameFor(expression).ToHtmlString();
      return new MvcHtmlString(System.Web.HttpUtility.HtmlDecode(result.ToString()));
   }
}

答案 2 :(得分:1)

仅仅跳过使用Html.DisplayNameFor会更容易吗?解码和重新编码文本似乎是不必要的。

public static MvcHtmlString DisplayPlaceHolderFor<TModel, TValue>(this HtmlHelper<TModel> html, Expression<Func<TModel, TValue>> expression)
{
    var metaData = ModelMetadata.FromLambdaExpression(expression, html.ViewData);
    var resolvedDisplayName = metaData.DisplayName ?? metaData.PropertyName;

    if (!string.IsNullOrEmpty(resolvedDisplayName))
        return new MvcHtmlString(resolvedDisplayName);

    var htmlFieldName = ExpressionHelper.GetExpressionText(expression);
    resolvedDisplayName = htmlFieldName.Split('.').Last();

    return new MvcHtmlString(resolvedDisplayName);
}