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Creative Databinding With Delphi 8 for .NET

Creative Databinding With Delphi 8 for .NET. Databinding Overview. Simple Binding The binding of a control to a public property of a class Complex Binding The binding of a control to a class that supports a list Specifically the list object must support the IList interface.

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Creative Databinding With Delphi 8 for .NET

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  1. Creative DatabindingWith Delphi 8 for .NET

  2. Databinding Overview • Simple Binding • The binding of a control to a public property of a class • Complex Binding • The binding of a control to a class that supports a list • Specifically the list object must support the IList interface.

  3. Databinding Binding Managers • Currency Manager • Simple and Complex Binding • Uses Interfaces or reflection to bind • Property Manager • Simple Binding • Uses reflection to bind

  4. Databinding Dataflow

  5. Sample Code

  6. Databinding Collections • Must Implement IList • Most convenient to inherit from CollectionBase • Must implement a default Array property called Item • Member class properties must be published

  7. Databinding Navigating the collection • CurrencyManager • Position, read and write, so can increment and decrement • Current, contains the selected object • Refresh, update the bound component.

  8. Databinding Showing changes • The cheats way – Currency Manager, refresh • IBindingList • Change Notification • Automatic Addition of Items • Automatic Removal of Items • In place Editing • Searching • Sort

  9. Databinding Simple binding • 2 way, but there is a trick to it • Implement a propertynameChanged event • Binding class allows us to provide custom parsing and formatting.

  10. Databinding Thanks to • References • http://www.codeproject.com/vb/net/databindingconcepts.asp • http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q313482 • http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnadvnet/html/vbnet02252003.asp

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