Why I'm geting this exception ?

Sachin Singh4y ago

Thats great.

There are multiple ways to bind dropdownlist in MVC. so, i recommend you to please go through my article on this

https://sharpencode.com/HowToTopic/binding-dropdownlist-in-asp-net-mvc

Abdel Fardjallah4y ago

Thank you for the answer.

No problem with data. Drop down list displays data from db.

The create button is suposed to insert drop down lists values as a row in vote table, but instead it raises an exception: object reference not set to an instance of an object.

Can't understand why

Sachin Singh4y ago

Make two changes

first, inside Vote constructor, initialize the Activities

public vote()
{
ListeActivities= new List<Activities>();
// other list type
}

second make sure you are getting data from db

modify line 46

SqlConnection connect=new (connectionstring);

to

SqlConnection connect=new SqlConnection(connectionstring);