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<TITLE> [Mono-bugs] [Bug 75177][Nor] New - Read Decimal;
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NULL Value gives overflow Exception
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<H1>[Mono-bugs] [Bug 75177][Nor] New - Read Decimal;
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NULL Value gives overflow Exception</H1>
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<B>bugzilla-daemon at bugzilla.ximian.com</B>
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<A HREF="mailto:mono-bugs%40lists.ximian.com?Subject=%5BMono-bugs%5D%20%5BBug%2075177%5D%5BNor%5D%20New%20-%20Read%20Decimal%3B%0A%09NULL%20Value%20gives%20overflow%20Exception&In-Reply-To=bug-75177%40chernobyl.ximian.com"
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TITLE="[Mono-bugs] [Bug 75177][Nor] New - Read Decimal;
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NULL Value gives overflow Exception">bugzilla-daemon at bugzilla.ximian.com
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</A><BR>
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<I>Wed Jun 8 08:41:41 EDT 2005</I>
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<PRE>Please do not reply to this email- if you want to comment on the bug, go to the
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URL shown below and enter your comments there.
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Changed by <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">timo-mono at pokorra.de.</A>
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<A HREF="http://bugzilla.ximian.com/show_bug.cgi?id=75177">http://bugzilla.ximian.com/show_bug.cgi?id=75177</A>
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--- shadow/75177 2005-06-08 08:41:41.000000000 -0400
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+++ shadow/75177.tmp.26812 2005-06-08 08:41:41.000000000 -0400
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@@ -0,0 +1,49 @@
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+Bug#: 75177
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+Product: Mono: Class Libraries
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+Version: 1.1
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+OS: All
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+OS Details:
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+Status: NEW
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+Resolution:
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+Severity:
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+Priority: Normal
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+Component: Sys.Data
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+AssignedTo: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">mono-bugs at ximian.com</A>
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+ReportedBy: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">timo-mono at pokorra.de</A>
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+QAContact: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">mono-bugs at ximian.com</A>
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+TargetMilestone: ---
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+URL:
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+Cc:
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+Summary: Read Decimal; NULL Value gives overflow Exception
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+
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+Description of Problem:
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+When reading the result of a query, and a decimal column returns a NULL
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+value, it gives the exception:
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+System.OverflowException: Number overflow.
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+
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+Steps to reproduce the problem:
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+1. sql statement including a decimal column, that is NULL
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+
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+Actual Results:
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+System.OverflowException: Number overflow.
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+
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+Expected Results:
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+DBNull.Value
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+
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+How often does this happen?
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+Always
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+
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+Additional Information:
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+
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+The problem is in OdbcDataReader.cs, GetValue(int):
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+outsize is -1; new byte [-1] raises the exception.
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+
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+fix:
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+if (outsize!=-1)
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+{
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+ byte[] temp = new byte[outsize];
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+ for (int i=0;i<outsize;i++)
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+ temp[i]=buffer[i];
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+ DataValue=Decimal.Parse(System.Text.Encoding.Default.GetString(temp));
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+}
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+else DataValue = DBNull.Value;
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</PRE>
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