Cascading dropdownlist in ASP.NET C#

Question

1.00/5 (1 vote)

See more:

i have 3 Drop down List in html page how can i scrap these drop down each time i select the first it fill the second but when i select the second and use fiddler to follow i find it gets error 505 because view state always change every time in selected item changed how can i solve this problem correctly ?? i am using scrappy sharp and some times html agility if i need that

What I have tried:

<dropdownlist id="1">
<dropdownlist id="2">
<dropdownlist id="3">

Posted 21-Dec-16 23:48pm

MR.alaa

Updated 22-Dec-16 20:51pm

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Richard Deeming · Accepted Answer · 2016-12-22T06:27:00

Solution 1

That error is there to stop people from doing precisely what you're trying to do - submit the form with unknown / invalid values.

Unless you can get the site owners to cooperate, there's nothing you can do to avoid this.

Posted 22-Dec-16 6:27am

Richard Deeming