[mapguide-users] Hot to set MgProperty to NULL

[Gunter Becker]

Thanks Kenneth. 
I've found that SetNull() works for SQL Server 2008 Provider. 
But it's very odd to first initialize a "default" value (in my case I use
Int16.MinValue)  and then set the whole MgProperty-Object to NULL. Why not
have a constructor that allows NULL values?

Thanks again, Gunter



Kenneth Skovhede, GEOGRAF A/S wrote:
> 
> SetNull() is the method to use.
> 
> I've found that various providers either break on, or ignore, null values.
> 
> Regards, Kenneth Skovhede, GEOGRAF A/S
> 
> 
> 
> Gunter Becker skrev:
>> Hi,
>>
>> I'd like to update existing features with NULL values.
>> Let's say I have a property called 'age' and I want to delete the value
>> of
>> this property
>> so that I have a null value instead of the integer value.
>>
>> The only contructor I've found needs two parameters. The property name
>> and
>> the property value.
>> The property value can't be null:
>>
>> MgInt16Property newProperty =  new MgInt16Property(propertyName,
>> Convert.ToInt16(propertyValue));
>>
>> There is a SetNull-Methode which I can set to 'true' afterwards. But this
>> doesn't affect anything. 
>>
>> Any idea on how to update a property with a null value???
>>
>> Thanks Gunter
>>
>>   
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