How to test for null in vb.net?

Asked by Carlin

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Answers ( 6 )

  1. Heriäman

    warangal. Hi. I am getting product id value some times null and empty from database. here how i check if valule null and empty. Hi, For Null or Empty value, there is
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    Ratings : 62 %   

      
  2. Madison

    Tom, In Visual Basic, you can use the IsNull() function to determine whether a value is null. If you are getting a String value, you can simply test for a zero-length
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    Ratings : 47 %   

      
  3. Douglas

    editTransactionRow.pay_id is Null so in fact you are doing: null.ToString() and it cannot be executed. You need to check editTransactionRow.pay_id and not
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    Ratings : 49 %   

      
  4. Brittany

    Nullables Play Nice With Databases and NHibernate. NHibernate is nice in that if you have a null value, it will not save it to the database. If you have a value of
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    Ratings : 32 %   

      
  5. Azartur

    How can I check if a datatable has never been set ? or Null or Nothing ? I don't mean empty Datatable (...) For example, Dim dt As DataTable = TryCast(Session("dt
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    Ratings : 51 %