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https://stackoverflow.com/questions/6251431/dataset-does-not-support-system-nullable
The type 'string' must be a non-nullable type in order to use it as parameter T in the generic type or method 'System.Nullable<T>' 1 Joining Two DataTables — DataSet does not support System.Nullable<>
https://social.msdn.microsoft.com/forums/en-US/9788f39c-2f3a-489d-8586-e7fc7c429e3b/crystal-does-not-support-systemnullable
Jun 19, 2008 · Crystal Reports does not accept Nullable types at this time. The solution used was to create a clone of the object and remove all nullable types making making sure null values translated into values that the resulting report would process and understand.
https://forums.asp.net/t/1809756.aspx?crystal+report+dataset+does+not+support+System+Nullable
Jun 08, 2012 · Hello guys, in my DB I have a field to be nullable, but crystal report return an error:"dataset does not support System.Nullable"
https://www.codeproject.com/questions/1021140/dataset-does-not-support-system-nullable
You are using LINQ to fetch records and bind list to report. It seems some column value is NULL in linq query which doesn't support dataset in report. In order to resolve your problem please use anonymous type and check null value of columns. Here it is checking null value and assigning some blank value to it.
https://forums.asp.net/t/1796259.aspx?how+to+solve+this+DataSet+does+not+support+System+Nullable+
Apr 24, 2012 · Re: how to solve this: DataSet does not support System.Nullable<>. Apr 24, 2012 04:25 AMtusharrsLINK. hi, Then presumably you'll need to lift them to the non-nullable form, using. Nullable.GetUnderlyingType, and perhaps change a few null values to DbNull.Value...
https://stackoverflow.com/questions/23233295/dataset-does-not-support-system-nullable-in-export
The type 'string' must be a non-nullable type in order to use it as parameter T in the generic type or method 'System.Nullable<T>' 1 Joining Two DataTables — DataSet does not support System.Nullable<>
https://bytes.com/topic/c-sharp/answers/514233-adding-nullable-datetime-column-datatable-does-not-work
Jul 22, 2006 · I am trying to add a nullable datetime column to a datatable fails. DataSet does not support System.Nullable<>. So, there's no need to create the original column with a nullable type. Just supply the non-nullable version of the type.
https://stackoverflow.com/questions/18910210/dataset-does-not-support-system-nullable-exception-in-c-sharp
Conditional (Not really useful for nulls, but useful for projecting other values) SPartSalePrice = s.SPartSalePrice == null ? 0.0 : s.SPartSalePrice, The field needs to be given a name (I've kept the original one, SPartSalePrice ), and the type of substitution ( 0.0 ) should match the type of the field.
https://www.telerik.com/forums/dataset-does-not-support-system-nullable-lt-gt
Jul 25, 2009 · Join a community of over 2.6m developers to have your questions answered on DataSet does not support System.Nullable<> of Reporting Reporting. New here? Start with our free trials.
https://answers.sap.com/questions/9579739/dataset-does-not-support-systemnullable.html
I use Crystal Reports with Visual Studios 2010 (Crystal Reports for .Net Framework 4 not sure which version). Anyway I have some fields which can have Null values. I handle them using nullable pr
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