@Abhijith Yamsani Thanks for the question and using MS Q&A platform.
You may follow the following steps to select the csv or any file file while creating File system as source:
First create a linked service as follows:
Host: DriveLetter:\FolderName\
Example: I'm using C
Drive which has a folder named AzureLearn
Create a copy activity and select Source as follows:
Click on Source => New
Select New DataSet => Select File => File System and continue
Select Format= > Choose DelimitedText and continue
Select previously created File system linked service and click on browse.
Choose a file or folder.
Here you can find the file located under the previously selected folder while creating File System.
As per the repro, I'm able to find the path which I want to migrate to ADLS gen2.
Hope this helps. Do let us know if you any further queries.
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