[mapguide-users] Exception occurred in method MgProxyFeatureReader.GetProperty

[Rock Beans]

The problem is the affects the MapGuide 2009 Enterprise viewer as well
not just my custom code. For example: The basic WebLayout created
search and report task items also errors on Null values. Has this been
fixed in the Basic Ajax viewer for Open Source?

The Rock


On Wed, Sep 10, 2008 at 4:35 AM, Jackie C. Ng <jumpinjackie at gmail.com> wrote:
>
> There is a reason for this redundancy. GetXXX methods throw an exception on
> null values, so IsNull() is used to determine if GetXXX is callable or not.
>
> See: http://www.nabble.com/Exception-thrown-on-null-values--to15746442.html
>
> - Jackie
>
>
> Rock Beans wrote:
>>
>> Thanks!
>>
>> if (featureReader.IsNull("ADDR_NUM"))
>> {
>>    STREET_NO = "";
>> } else {
>>    STREET_NO = featureReader.GetString("ADDR_NUM");
>> }
>>
>> Seems redundant but it works better than try{}catch{} all over the
>> place. I can see using a variable to to field name making things more
>> dynamic now that I see this code in some examples. Thanks.
>>
>>
>> On Tue, Sep 9, 2008 at 2:04 PM, Jack Lee <jack.lee at autodesk.com> wrote:
>>> Hi,
>>>
>>> You should call IsNull to check if the value is not null before calling
>>> GetString.
>>>
>>>
>>> -----Original Message-----
>>> From: mapguide-users-bounces at lists.osgeo.org
>>> [mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Rock Beans
>>> Sent: Tuesday, September 09, 2008 2:57 PM
>>> To: MapGuide Users Mail List
>>> Subject: [mapguide-users] Exception occurred in method
>>> MgProxyFeatureReader.GetProperty
>>>
>>> This error comes up in ASP.NET when random records, I guess contain
>>> NULL entry. Why does it not just send a empty string? Is there a work
>>> around for this?
>>>
>>> featureReader.GetString("ADDR_NUM")
>>>
>>> Value for ADDR_NUM property is null.Value for ADDR_NUM property is
>>> null. Exception occurred in method MgProxyFeatureReader.GetProperty at
>>> line 448 in file
>>> d:\buildforgeprojects\carrera_nightly\build_32.2\ent\os\common\mapguidecommon\Services/ProxyFeatureReader.cpp
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>> _______________________________________________
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>>
>
>
> -----
> http://themapguyde.blogspot.com
>
> http://www.linkedin.com/in/jackieng
> --
> View this message in context: http://www.nabble.com/Exception-occurred-in-method-MgProxyFeatureReader.GetProperty-tp19398912p19409916.html
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>
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