csv file is much lighter than json. For flat data to be represented in grid layout, need to support this format for grid.
If you convert the data from CSV to JSON, what is the JSON structure expected, is it an array only with values or array with key:value ?
This is not supported out-of-the-box presently, Abhinay. You can convert the data from csv to json format manually, and then pass it to the grid data source, if applicable.