如何从@ Html.EditForModel排除字段（），但有它显示了使用Html.DisplayForModel（） [英] How to exclude a field from @Html.EditForModel() but have it show using Html.DisplayForModel()

问题描述

我在ASP.NET MVC阅读和它的所有有趣的用途，我只是发现了有关的的DataTemplates 。

I am reading up on ASP.NET MVC and all of it's fun uses and I just found out about DataTemplates.

在我急着要测试这个东西的时候，我将我的简单的车型之一到使用 @ Html.DisplayForModel（）和 @Html .EditForModel（）和它的工作就像一个幸运符，它是：）

In my hurry to test this thing out, I converted one of my simpler models over to using @Html.DisplayForModel() and @Html.EditForModel() and it worked like a lucky charm that it is :)

一件事，我立即发现，虽然是我不能轻易定义一个字段，以显示在显示屏的意见，但不会是present在所有的编辑...

One thing that I immediately found out though was that I could not easily define a field to show up on display views but not be present at all for editing...

推荐答案

您可以使用IMetadataAware界面的创建属性，它会设置ShowForEdit和ShowForDislay在元数据：

You can make use of IMetadataAware interface an create attribute which will set ShowForEdit and ShowForDislay in Metadata:

[AttributeUsage(AttributeTargets.Property, AllowMultiple = false, Inherited = true)]
public class TemplatesVisibilityAttribute : Attribute, IMetadataAware
{
    public bool ShowForDisplay { get; set; }

    public bool ShowForEdit { get; set; }

    public TemplatesVisibilityAttribut()
    {
        this.ShowForDisplay = true;
        this.ShowForEdit = true;
    }

    public void OnMetadataCreated(ModelMetadata metadata)
    {
        if (metadata == null)
        {
            throw new ArgumentNullException("metadata");
        }

        metadata.ShowForDisplay = this.ShowForDisplay;
        metadata.ShowForEdit = this.ShowForEdit;
    }

}

然后你可以将其连接到你的财产是这样的：

Then you can attach it to your property like this:

public class TemplateViewModel
{
  [TemplatesVisibility(ShowForEdit = false)]
  public string ShowForDisplayProperty { get; set; }

  public string ShowAlwaysProperty { get; set; }
}

这是你所需要的。

And this is all you need.

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