You can have dynamic properties as typed properties on your model. You should then mark them with Ignore atttribute otherwise it will be created a page property with same name. Like below:

[Ignore]
public virtual XhtmlString DynamicHtml { get; set; }

It is however not possible to create/define dynamic properites on your models so you need to create them in admin mode. Then in your view you can render them as :

 Html.DisplayFor(m => m.DynamicHtml)

Note: you will not get onpageedit support on your dynamic properties, the need to be edited in the separeate dynamic properties dialog

Thanks, it is exactly what I was looking for.

I have used this logic in my 7.5 solution and and getting a null when trying to access the dynamic property

        [Ignore]
        public virtual PageReference SiteConfigurationPage { get; set; }

While debugging i get the following

Model.CurrentPage["SiteConfigurationPage"]
{9}
    base: {9}
    RemoteSite: null

Model.CurrentPage.SiteConfigurationPage
null

Any idea on what i might be doing wrong ?

In CMS 7.5 to achieve the same functionality you need to implement the dynamic property like this: 

[Ignore]
public virtual string DynamicPropertyName
        {
            get
            {
                var dynamicProp = Property["DynamicPropertyName"];
                return dynamicProp != null ? dynamicProp.Value as string : null;
            }
            
        }

I have created Dynamic Property in Admin mode but following code always written null reference exception in EPIserver7.5.

   PropertyData property = CurrentPage.Property["SiteConfigurationPage"];

Even i also tried with your solution : 

[Ignore]

public virtual string SiteConfigurationPage

{ get

   { var configPage = Property["SiteConfigurationPage"];

       return configPage != null ? configPage.Value as string : null; }

}

but same error..

Any ideas?

Komal, make sure the name of the property you created via admin mode and the magic string in code are the same,

Worked!!  Thanks minesh..