如何从资源文件本地化WebGrid列标题

Question

I have localised the display of property names in my applications by adding the Display attribute, which gets the string value from a resx file:

public class ViewLeadViewModel
{
    [Required]
    [Display(Name = "Location", ResourceType = typeof(FormLabels))]
    public string Location { get; set; }
}

This works fine in forms and when viewing the data in a basic grid.

However, I want to use a WebGrid to dispaly the data, but it seems that the Display attribute is not supported, and we can only use DisplayName for this (currently the column headers just use the actual name of the property).

I tried adding this attribute:

[DisplayName(FormLabels.ResourceManager.GetString("Location"))]

But I get the error

An attribute argument must be a constant expression, typeof expression or array creation expression of an attribute parameter type

How can I localise the column headers in WebGrid from a resource file?

---

Update

Here is the code in Index.cshtml :

@model IEnumerable<AuroraWeb.Models.ViewLeadViewModel>

@{ 
    var grid = new WebGrid(new List<object>());

    grid = new WebGrid( Model,
                        rowsPerPage: 100);
}

@grid.GetHtml(
    tableStyle: "table",
    alternatingRowStyle: "alternate")

Answer 1

You can create a custom attribute class inherited from DisplayNameAttribute and set the DisplayName string property inside the attribute by providing the resource key, given by this example below:

// provided by Brian Schroer
[AttributeUsage(AttributeTargets.Property)]
public class LocalizedDisplayNameAttribute : DisplayNameAttribute 
{
    public LocalizedDisplayNameAttribute(string resourceKey)
    {
        ResourceKey = resourceKey;
    }

    private string ResourceKey { get; set; }

    public override string DisplayName
    {
        get
        {
            string displayName = FormLabels.ResourceManager.GetString(ResourceKey);
            return string.IsNullOrEmpty(displayName) ? string.Format("[[{0}]]", ResourceKey) : displayName;
        }
    }
}

Example usage:

[LocalizedDisplayName("Location")]
public string Location { get; set; }

Reference:

ASP.NET MVC localization DisplayNameAttribute alternatives: a good way