dxDBGrid 何去何从 升级



https://www.devexpress.com/Support/Center/Question/Details/Q449255

Delphi 5 to XE3

TdxGrid is an old component. Now TcxGrid is used instead of TdxDBGrid. Please refer to the "TcxGrid Object" help topic and theConvert from TdxDBGrid (v3) to the new v5 ticket where it was already discussed how to migrate from TdxDBGrid to the new grid version.

Convert from TdxDBGrid (v3) to the new v5

When ordering ExpressQuantumGrid 5, older versions are not included in your products list automatically. To clarify the situation, please contact our Client Services ([e-mail]).

In the meantime, please note that actually, ExpressQuantumGrid v5 is a completely new control built from the ground-up using an extremely new technology. It has nothing in common with v3. Note that the new Grid uses quite a different class model and thus, the existing code is not suitable for it. However, you may have both versions installed simultaneously because their libraries were expressly designed to be independent.

To simplify the conversion of your projects, we have implemented a design-time conversion utility that allows you to transform the existing Grid 3 objects in one action. You can invoke it via the Grid 5 design-time component menu (the "Import..." menu item).

Unfortunately, there is no conversion tool for stand-alone editors. If you wish, you may ask our other users in our public newsgroups (http://www.devexpress.com/?section=/Support/Newsgroups). We know that plenty of them have done this job and probably, somebody will give you a powerful solution.

Implementing a code converter is a very complex (even impossible) task and it is unlikely that we will ever create such a tool even though we have been asked for this frequently. We recommend that you refer to the ExpressQuantumGrid v5 help (topic: "Grid3 and Grid4 Equivalents") that was specially written to help you convert your code from v3 to v5. There are also informative white papers devoted to the new ExpressQuantumGrid version. Please look for them on the ExpressQuantumGrid's Web features page:
  http://www.devexpress.com/?section=/products/VCL/ExQuantumGrid

Of course, you are welcome to ask any questions about the new Grid. We will be happy to assist you. If you want to consult other Developer Express users, you may join our newsgroups.