Error In cascading Drop down - .Net Core 3.1, Ajax

GLENZSOFT PROJECTS

6y1.2kLearn iOS Programming

I have implemented a code for get categories based on Departments as follow

1. The method to get Departments

2. the view

3. Javascript Code to get categories based on department id

4. Get sub Method

5. Error Occures as Undifine (If there is 3 categories for a particuler department Id that will display 3 undifines which means Value and Text is not passed from contaller.But the count is passing)

Please help me with this. I was tring to fix this for 3 days.

3 Replies

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GLENZSOFT PROJECTS6y ago
Hello,

Khushbu Saini, I have used this way but it doesn't work. Still it gives the error. Thank you for ur reply Khushbu. .

Rajeesh Menoth, I JsonRequestBehavior.AllowGet canot use in .net core 3.1. Im using Web API. and also i have referred and tried the ways in the link you have shared. Still gives the same error. Thank you for the reply Rajeesh.
0
Khushbu Saini6y ago

use get ()method instead getJSON() method..
+1
Rajeesh Menoth6y ago
Hi,

Try the following code and if that is not working go through the following article for sainesh.
return Json(productVM.CategoryList, JsonRequestBehavior.AllowGet);
I think the following example will help you :

https://stackoverflow.com/questions/14455675/trying-to-return-json-and-populate-selectlist

https://www.c-sharpcorner.com/article/creating-simple-cascading-dropdownlist-in-asp-net-core-mvc-with-new-tag-helpers/
+1