Thank you! That did work. But I wanted to create a data frame from the file that is choosen. I used the following code:
gSignalConnect(buttoncount,"file-set",function(buttoncount){
                          cdata <- read.csv(buttoncount$getFilename())
                          })

I use the cdata <- read.csv(buttoncount$getFilename()) statement instead of the print(buttoncount$getFilename()). When I do this I don't get an error, but I also the cdata is not created. Am I missing something?

Thanks!

Chandra



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