Arithmetic operation resulted in an overflow Adding integers

Question

I can t understand this error    In this call to method SetVolume  Volume   2055786000 and size   93552000  Volume is an Integer property  and size is also Integer  as you can see    The class is a partial class of a dbml entity class  however this Volume property is NOT a column in the database  it exist only in the partial class  as a  business object property     View Detail shows    Data   Item   In order to evaluate an indexed property  the property must be qualified and the arguments must be explicitly supplied by the user     What may cause this

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The maximum size for an int is 2147483647   You could use an Int64 Long which is far larger

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For simplicity I will use bytes   byte a 250  byte b 8  byte c a b    if a  b  and c were  int   you would expect 258  but in the case of  byte   the expected result would be 2  258  amp  0xFF   but in a Windows application you get an exception  in a console one you may not  I don t  but this may depend on IDE  I use SharpDevelop    Sometimes  however  that behaviour is desired  e g  you only care about the lower 8 bits of the result    You could do the following   byte a 250  byte b 8   byte c  byte   int a    int b     This way both  a  and  b  are converted to  int   added  then casted back to  byte    To be on the safe side  you may also want to try       byte c  byte    int a    int b   amp  0xFF     Or if you really want that behaviour  the much simpler way of doing the above is   unchecked       byte a 250      byte b 8      byte c a b      Or declare your variables first  then do the math in the  unchecked  section   Alternately  if you want to force the checking of overflow  use  checked  instead   Hope this clears things up   Nurchi  P S   Trust me  that exception is your friend

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The result integer value is out of the range which an integer data type can hold   Try using Int64

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2055786000   93552000   2149338000  which is greater than 2 31  So if you re using signed integers coded on 4 bytes  the result of the operation doesn t fit and you get an overflow exception

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The maximum value of an integer  which is signed  is 2147483647  If that value overflows  an exception is thrown to prevent unexpected behavior of your program    If that exception wouldn t be thrown  you d have a value of -2145629296 for your Volume  which is most probably not wanted     Solution  Use an Int64 for your volume  With a max value of 9223372036854775807  you re probably more on the safe side

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Maximum value fo int is 2147483647  so 2055786000 93552000   2147483647 and it caused overflow

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This error occurred for me when a value was returned as -1  IND due to a division by zero  More info on IEEE floating-point exceptions in C   here on SO and by John Cook  For the one who has downvoted this answer  and did not specify why   the reason why this answer can be significant to some is that a division by zero will lead to an infinitely large number and thus a value that doesn t fit in an Int32  or even Int64   So the error you receive will be the same  Arithmetic operation resulted in an overflow  but the reason is slightly different

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int MaxValue   2147483647 2055786000   93552000   2149338000  gt  int MaxValue   So you cannot store this number into an integer  You could use Int64 type which has a maximum value of 9 223 372 036 854 775 807

[c#] Arithmetic operation resulted in an overflow. (Adding integers)

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