Gets or sets the data values that are used to pre-fill a form's fields. When you display a form, this is the information pre-loaded into each field.  

For example, in a Country: field you might have "United States" set to pre-fill the field. This way, people from the United States don't have to type it in each time. Another example is when a user is logged in and fills out a form more that once, his name and and email address always appear in their respective fields after completing the form the first time.

public FormFieldDataItem() PreFillFielddata;

Public Property PreFillFielddata() As FormFieldDataItem()