[Solved] JavaScript Error: Unable to set property value of undefined or null reference in ASP.Net

Question

I sort of used the following solution to get what i wanted to do but im getting when i try to save the data i get the following error  how can i get it to store the data url to sql

roon3y · Accepted Answer

i got it to work by using documentgetElementByIdltIDGOESHEREClientIDgtvalueinstead ofdocumentgetElementByIdIDGOESHEREvalue I could take my question back But this is the answer

[Solved] JavaScript Error: Unable to set property value of undefined or null reference in ASP.Net

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