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Questions tagged [client-dataset]

8 questions
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fetchondemand not working in clientdataset

Have a 500.000 records database in xml form, try to work with in a xe5 Delphi 64bit application (ClientDataSet). If I read it completely it takes more than 4 GB memory. Tried to use the fetchondemand=False and PacketRecords=5000 properties (as the…
Laszlo
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Delphi, ADOQuery,ClientDataSet

I want save ClientDataSet to file and then open this file in AdoQuery (AdoQuery.LoadFromFile()). Is it possible? Or how can I save dataset to pfADTG file format? Best regards Pawel
Paweł Rzońca
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Delphi Error Dataset not in Insert or Edit Mode, when in fact it is in Edit Mode

I googled a lot and found also some posts here in stack overflow about the error "Dataset not in Insert or Edit Mode", but all of them occurred properly when the trying to perform an action in a dataset which is not in edit or insert mode. The…
Marcela Rocha
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TClientDataset: 'Fieldtype not supported for XML.'

I've got a bunch of data loaded into a TClientDataset, representing an array of complex objects. But when I try to run Dataset.SaveToFile('c:\test.xml', dfXMLUTF8); it doesn't like it: Project testing.exe raised exception class EDBClient with…
Mason Wheeler
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Why is my cloned dataset blank?

I'm using TClientDataset.CloneCursor to implement different views of the same data. I have a master dataset, and several clones, each of which contains a different subset of the master dataset's fields. But when I try to display data from the…
Mason Wheeler
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delphi clientdataset filtering strange behaviour

Working in XE5 Delphi. For a given ClientDataSet this filter is working: Strap LIKE '18%' but this one do not: Strap LIKE '1%' . Meantime Strap LIKE '%8' works fine, but Strap LIKE '%18' do not. The Strap field has a string type, always with 17…
Laszlo
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Delphi: After using AppendData(Data,False) twice to a ClientDataset, I can't edit its rows or move its cursor

I have a disconnected ClientDataset ( I dragged the component from the toolbar, right-clicked on it and in the context menu selected "Create Dataset...") which has no Provider. I load it with some records from the database like…
Coasting Dave
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Can Delphi ClientDataSets be used in iOS Applications?

I read the Components Not Used in iOS Apps post in the Embarcadero DocWiki and was unable to tell if ClientDataSets and DataSources can be used in iOS applications. Can anyone confim or deny whether these components will work in iOS applications.
Michael Riley - AKA Gunny
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