Cascading Dropdown not select the value while Edit in MVC 5

Dear All,

 

i have successfully created Add Product with field VERTICAL, SUB VERTICAL AND PRODUCT NAME using bellow Link:

https://www.c-sharpcorner.com/UploadFile/4d9083/creating-simple-cascading-dropdownlist-in-mvc-4-using-razor/

 

 

But now i am stucked with edit product. I wrote same code for Edit product. VERTICAL dropdown is selected value. but SUB VERTICAL dropdown is not select value.

 

Can anybody Help Me on this.

 

 

Thanks in advance.