Resolve dropdownlistfor default settings under MVC

http://my.oschina.net/kavensu/blog/307376

The key point is that viewbag.xx cannot have the same name as the field name. Otherwise, the default value cannot be set. It should be because of the conflict.

For example:

@Html. dropdownlistfor (model = model.dept_id, viewbag.depts as ienumerable<selectlistitem>,string. Empty, new {style = "width:180px"})

cannot be written as:

@Html. dropdownlistfor (model = model.dept_id,viewbag.dept_id as ienumerable<selectlistitem>,string. Empty, new {style = "width:180px"})

This approach solves the situation where the backend list<selectlistitem> front end cannot get the default value

Resolve dropdownlistfor default settings under MVC