Custom Data Annotations ASP.NET MVC C#

Question

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

Here is my Model:

public class Pmjob
{
   [Tooltext=\"Hier soll der Name eingegeben werden\"]
   [D         


        

Answer 1

Create an abstract class MetaDataAttribute :

public abstract class MetadataAttribute : Attribute
{
    /// 

    /// Method for processing custom attribute data.
    /// 
    /// A ModelMetaData instance.
    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 attributes,
        Type containerType,
        Func