Blog selector 
This tutorial demonstrates how to add a Blogs selector in a widget's designer view. 
For details about the content selector, see Use content item selectors.
 PREREQUISITES: You created at least one Blog, so that the selector can use it. For more information, see Sitefinity: Blogs and blog posts. 
In your DesignerView.YourView.cshtml file, place one of the following tags anywhere in the HTML code:
Single item selection:
Multiple items selection:
The values of the attributes are scope properties that you define in the MVC widget controller.
    
    
        
            | Attribute | 
            Description | 
        
        
            | sf-selected-item-id | 
            Single select only. Stores the ID of the selected item.  | 
        
        
            | sf-selected-item  | 
            Single select only. Stores the serialized information of the selected item. | 
        
        
            | sf-selected-ids | 
            Multi select only. Stores the IDs of the selected items.  | 
        
        
            | sf-selected-items | 
            Multi select only. Stores the serialized information of the selected items.  | 
        
        
            | sf-provider | 
            Configures the provider to use when retrieving the items to display. |