[Solved] Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index (mentioned code) [duplicate]

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Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index (mentioned code) [duplicate]

solved Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index (mentioned code) [duplicate]