Html 如何将模型中的占位符文本添加到 MVC 视图中？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/22105833/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How do I add placeholder text from the model into a MVC view?
提问by John S
I have a model:
我有一个模型：
[DataType(DataType.EmailAddress)]
[DisplayFormat(ConvertEmptyStringToNull = true)]
[Display(Prompt = "Email Address")]
public string Email { get; set; }
I am trying to get the "prompt" to show in the placeholder text of the resulting text box with the following:
我试图让“提示”显示在结果文本框的占位符文本中，如下所示：
@Html.EditorFor(model => model.Email,
new { htmlAttributes = new { @class = "form-control input-md",
placeholder = @ViewData.ModelMetadata.Watermark } })
When I view the generated HTML I only get "placeholder" in the input tag. According to what I have read ViewData.ModelMetadata.Watermark should work. What is the correct way to get this placeholder text in place?
当我查看生成的 HTML 时，我只在输入标签中得到“占位符”。根据我所读的 ViewData.ModelMetadata.Watermark 应该可以工作。获取此占位符文本的正确方法是什么？
回答by John S
This solved my issue:
这解决了我的问题：
@Html.EditorFor(model => model.Email, new { htmlAttributes =
new { @class = "form-control input-sm",
placeholder = @Html.DisplayNameFor(m=>m.Email) } })
The code that did it was
这样做的代码是
placeholder = @Html.DisplayNameFor(m=>m.Email)
回答by The girl with red hair
A little late, but if someone is still looking for it...
有点晚了，但如果有人还在寻找它......
@Html.EditorFor(model => model.Email,
new { htmlAttributes = new { @class = "form-control input-md",
@placeholder = "Whatever you want as a placeholder" } })
It's perfect and clean!
它完美而干净！
回答by marapet
The correct solution to get the Promptvalue instead of the DisplayNamein a non-templated control context is the following:
在非模板化控件上下文中获取Prompt值而不是的正确解决方案DisplayName如下：
@Html.EditorFor(model => model.Email,
new { @class = "form-control input-md",
placeholder = ModelMetadata.FromLambdaExpression(m => m.Email, ViewData).Watermark
})
This will also - unlike the accepted solution using @Html.DisplayNameFor(m=>m.Email)- notdouble-escape the watermark text, which depending on the text and the language displayed can be a problem.
这也将 - 与使用的公认解决方案不同@Html.DisplayNameFor(m=>m.Email)-不会双重转义水印文本，这取决于所显示的文本和语言可能是一个问题。
回答by Shalom Dahan
Use TextBoxFor:
使用 TextBoxFor：
@Html.TextBoxFor(m => m.Email, new { @class = "form-control", @placeholder = Html.DisplayNameFor(m => m.Email) })
回答by Muhammad Bilal
@Html.TextBoxFor(m => m.Email, new { @class = "form-control" , @placeholder = "Username" })
回答by dc922
Use TextBoxFor like so:
像这样使用 TextBoxFor：
@Html.TextBoxFor(model => model.LastName, new{placeholder="Last Name"})
回答by CSharper
In your controller method that renders view say
在呈现视图的控制器方法中说
ViewData["Name"] = "blabbity blah";
ViewData["Name"] = "blabbity blah";
then
然后
@Html.TextBoxFor(u => u.Company, new { @placeholder = @ViewData["Name"] })
@Html.TextBoxFor(u => u.Company, new { @placeholder = @ViewData["Name"] })
Actually better yet you can do this.
实际上更好，但你可以这样做。
public ActionResult Index()
{
NewLogin n = new ClassModel().PopModel();
n.Company = "fsdfsdf";
return View(n);
}
@Html.TextBoxFor(u => u.Company, new { @placeholder = Model.Company })
@Html.TextBoxFor(u => u.Company, new { @placeholder = Model.Company })
回答by Prabu
Check out this answers to this question, which has been answered aleady (a few times).
看看这个问题的答案，已经回答了aleady（几次）。
@Html.EditorForuses templates, and so the approach to this problem is using a customised template.
@Html.EditorFor使用模板，因此解决此问题的方法是使用自定义模板。
回答by Sabin Kumar Sharma
you can use it as follows for the date which will also give you a "datetime" picker.
您可以按如下方式使用它作为日期，这也将为您提供“日期时间”选择器。
[DisplayFormat(DataFormatString ="{0:yyyy-MM-dd}",ApplyFormatInEditMode =true)]
