How to get DataAnnotation Display Name?

Question

I have EF model class. for that I created MetadataType for that partial class.

Now I need to read or get all of these displayname of the properties of the object from c#. So I can use the in Excel Header row.

[MetadataType(typeof(vwGridMetadata))]
public partial class vwGrid
{

}

public class vwGridMetadata
{
    [Display(Name = "Note ID")]
    public int intNoteID { get; set; }
    [Display(Name = "Global Number")]
    public string strGlobalLoanNumber { get; set; }
    [Display(Name = "Data Source ID")]
    public Nullable<int> intDataSourceID { get; set; }
    [Display(Name = "Sample ID")]
    ....
}

vwGrid grd = new vwGrid;

Here I want get all properties displayname in iteration. So I can add them to excel Header row and cells. How to do that?

Hi Friend, This question is already answer find link stackoverflow.com/questions/10107934/… — Vidhyadhar Galande
– Vidhyadhar Galande, Commented Jun 28, 2018 at 11:41

Steve · Accepted Answer · 2018-06-27 18:07:29Z

14

Reflection and LINQ is your friend

typeof(vwGridMetadata)
.GetProperties()
.Select(x => x.GetCustomAttribute<DisplayAttribute>())
.Where(x => x != null)
.Select(x => x.Name);

Note: You need to include System.Reflection and System.Linq namespaces to your project in order to use these methods.

edited Jun 27, 2018 at 18:07

Steve

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answered May 12, 2014 at 14:01

Selman Genç

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1 Comment

HackSlash Jan 2 at 16:24

"Do not use this property to get the value of the Name property. Use the GetName method instead." learn.microsoft.com/en-us/dotnet/api/…

masoud · Accepted Answer · 2017-12-05 11:03:40Z

2

ASP.Net Core 2 :

 var listOfFieldNames = typeof(vwGridMetadata)
                    .GetProperties()
                    .Select(f => f.GetCustomAttribute<DisplayAttribute>())
                    .Where(x => x != null)
                    .Select(x=>x.Name)
                    .ToList();

answered Dec 5, 2017 at 11:03

masoud

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Comments

MarchalPT · Accepted Answer · 2020-04-27 18:29:01Z

0

Just do this:

private string GetDisplayName(vwGridMetadata data, Object vwGridMetadataPropertie)
{
    string displayName = string.Empty;

    string propertyName = vwGridMetadataPropertie.GetType().Name;

    CustomAttributeData displayAttribute = data.GetType().GetProperty(propertyName).CustomAttributes.FirstOrDefault(x => x.AttributeType.Name == "DisplayAttribute");

    if (displayAttribute != null)
    {
        displayName = displayAttribute.NamedArguments.FirstOrDefault().TypedValue.Value;
    }

    return displayName;
}

You can make a foreach to loop through vwGridMetadata class properties and call this method on each property, or just make a foreach inside and remove the Object argument from the method.

edited Apr 27, 2020 at 18:29

answered Apr 27, 2020 at 18:22

MarchalPT

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