Convert value

I've a problem converting a decimal value to Int32
in watch I've:

(watch)
drRiga.ItemArray.GetValue(9).ToString()    "3380038,6052804"    string

but if I execute this:

Convert.ToInt32(drRiga.ItemArray.GetValue(9).ToString());
I obtain an error... how can I save only the integer value in a Int32 variable?

Thanks

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