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Editorial Team
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Asked: 2026-05-21T02:51:52+00:00

I have the follwing question about MVC 2 with C#. Here is my Model:

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I have the follwing question about MVC 2 with C#.

Here is my Model:

public class Pmjob
{
   [Tooltext="Hier soll der Name eingegeben werden"]
   [DisplayName("Type")]
   public int Name { get; set; }
}

Now I want to reach the Tooltext item in my view, e. g.:

@Html.ToolTextFor(Model => Model.Pmjob.Name)

or in the BL:

if ( Model.Pmjob.Name.Tooltext == "") {
}

Is this possible?

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1 Answer

  1. Editorial Team

    Create an abstract class MetaDataAttribute :

    public abstract class MetadataAttribute : Attribute
{
    /// <summary>
    /// Method for processing custom attribute data.
    /// </summary>
    /// <param name="modelMetaData">A ModelMetaData instance.</param>
    public abstract void Process(ModelMetadata modelMetaData);
}

    Make your attribute inherit from MetaDataAttribute :

    public class ToolTextAttribute : MetadataAttribute
{
    public string Text { get; set; }
    public TooltextAttribute(string text)
    {
        this.Text = new text;
    }

    public override void Process(ModelMetadata modelMetaData)
    {
        modelMetaData.AdditionalValues.Add("ToolText", this.Text);
    }
}

    Create the custom MetaDataProvider :

    public class CustomModelMetadataProvider : DataAnnotationsModelMetadataProvider
{
    protected override ModelMetadata CreateMetadata(
        IEnumerable<Attribute> attributes,
        Type containerType,
        Func<object> modelAccessor,
        Type modelType,
        string propertyName)
    {
        var modelMetadata = base.CreateMetadata(attributes, containerType, modelAccessor, modelType, propertyName);
        attributes.OfType<MetadataAttribute>().ToList().ForEach(x => x.Process(modelMetadata));
        return modelMetadata;
    }
}

    And replace the default one (global.asax.cs) : 

    protected void Application_Start()
{
    // snipped

    ModelMetadataProviders.Current = new CustomModelMetadataProvider();
}

    Finally, you can access it in your view (or in a Html Helper ) :

    (string)ViewData.ModelMetadata.AdditionalValues.Where(x => x.Key == "ToolText").SingleOrDefault()

    Source :

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