Do you have any place where you have control of the code (it is not automatically generated)? May be also there is a way to specify in the DataSet that the column allows null values.
We're using EF, so I'm not very familiar with that.
>No, I didn't write that code, I believe it is generated automatically by visual studio.
>
>>Did you try using (decimal?) instead of (decimal)
If it's not broken, fix it until it is.
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