selectem | Custom select items | Menu library
kandi X-RAY | selectem Summary
kandi X-RAY | selectem Summary
Custom select items dropdown. Check out the live Demo.
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QUESTION
I have a question about the basics of Oracle SQL.
I want to write a function in which selectem takes a value from a very simple table, and have it as a variable.
Then check its value.
...ANSWER
Answered 2019-Dec-12 at 15:13It seems like you're asking how to write a function to validate a parameter using a table. Here's two simple ways to do that.
QUESTION
This is how I populate dropdownlist and create html element;
AccountController:
...ANSWER
Answered 2017-Jul-22 at 00:47The error means that that ViewBag.Towns
is null
. When the 2nd parameter (IEnumerable selectList
) is null
, the method expects the first parameter to be typeof IEnumerable
.
Since you have assigned it in the GET method, this is almost certainly happening when you submit your form and have returned the view but have not repopulated the value of ViewBag.Towns
as you did in the GET method.
As a side note, using new SelectList()
is pointless extra overhead - it just creates another IEnumerable
based on the first one. In addition, the 4th parameter of the SelectList
constructor is ignored when you bind to a model property - internally the method builds a new IEnumerable
and sets the Selected
property based on the value of the property your binding to.
Your controller code should be
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