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Error while fetching null value

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helpc++databasecom
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  • L Offline
    L Offline
    Lost User
    wrote on last edited by
    #1

    Hello All, I am using VC++/Com application and working with database. I am using '_RecordsetPtr' to fetch database tables. Here 'RsITEM' Macro to get particular column data. Everything works fine unless you encounter with NULL value. If values comes to be NULL, it just throw exception, and application crashes. Not allowing null values in database is not solution in my case. Any help in this regard is highly appreciated. Happy Programming.

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    • L Lost User

      Hello All, I am using VC++/Com application and working with database. I am using '_RecordsetPtr' to fetch database tables. Here 'RsITEM' Macro to get particular column data. Everything works fine unless you encounter with NULL value. If values comes to be NULL, it just throw exception, and application crashes. Not allowing null values in database is not solution in my case. Any help in this regard is highly appreciated. Happy Programming.

      D Offline
      D Offline
      dasblinkenlight
      wrote on last edited by
      #2

      You need to check the Item for equality to VT_NULL before calling it's GetValue() method, like this[^].

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