I was trying to implements gridview sorting system from this articles Handle Sorting event in GridView in ASPNetBut after Ive modificated the code to suit it with my project it happens to be NullReferenceException Was Unhandled By User CodeScreenshot What should I do

حضرت خواجہ سیدنا معین الدین حسن چشتی سنجاری اجمیری رحمۃ اللہ علیہ

ASP.Net Connection string Error: Object reference not set to an instance of an object

Niccosan

I was trying to implements gridview sorting system from this articles :

But, after I've modificated the code to suit it with my project it happens to be "NullReferenceException Was Unhandled By User Code". Screenshot :

What should I do ?

pandeyis...

0 1

Refer below link -

I agree, here is the link: https://www.e-iceblue.com/Introduce/spire-office-for-net-free.html