Adding data to unbound datagridview c#

I have a datagridview , data is added to datagridview but is displayed only when row is selected. I had already created a .net c# project with same concept and it worked. I am failing to understand the issue.
Help me

You need to provide some more information before we can begin to help you. Code showing how you are creating and populating the gridview would be a good start. If you have working version, try modifying it to work with your new data.

Off the top of my head, I’d say you’ve failed to call Invalidate() after modifying the datagridview.

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