Asp.net – Invalid postback or callback argument. Event validation is enabled using ‘’

Asp.net – Invalid postback or callback argument. Event validation is enabled using ‘’

This is a common Asp.Net error when updating List Box items on the client side.
I asked this question on stackoverflow.com (Click here).

Just reflecting on how many views people have had on this question, it seems to be a common issue most Asp.Net developers encounter.

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