Adding calculated fields at runtime to a table. How to do it?

José Sebastián Batti

Delphi Developer

Wed, 18 Jun 1902 08:00:00 GMT

Adding calculated fields at runtime to a table. How to do it?

I need to add some calculated fields to a table in runtime that depends
on some parameters supplied by the user. I need to do it in runtime
because the user is who will define ultimatelly how many fields will be
added. I tryied with FieldDefs and I could not do it, I searched for
some AddXXX method in TTable and nothing....
How to achieve this?

Please help!

Thanks in advance

Ken Baile

Delphi Developer

Wed, 18 Jun 1902 08:00:00 GMT

Re:Adding calculated fields at runtime to a table. How to do it?

I think you have to create the appropriate TField object. Then set its
dataset property.

Quote

Jos Sebastin Battig wrote:

> I need to add some calculated fields to a table in runtime that depends
> on some parameters supplied by the user. I need to do it in runtime
> because the user is who will define ultimatelly how many fields will be
> added. I tryied with FieldDefs and I could not do it, I searched for
> some AddXXX method in TTable and nothing....
> How to achieve this?

> Please help!

> Thanks in advance

--
Ken Bailey
Falmouth Software Works Ltd.

Richard C Have

Delphi Developer

Wed, 18 Jun 1902 08:00:00 GMT

Re:Adding calculated fields at runtime to a table. How to do it?

Look at FieldDef.CreateField. You have to create all the data fields if
you are going to add calc fields.

Cheers

Quote

Jos Sebastin Battig wrote:

> I need to add some calculated fields to a table in runtime that depends
> on some parameters supplied by the user. I need to do it in runtime
> because the user is who will define ultimatelly how many fields will be
> added. I tryied with FieldDefs and I could not do it, I searched for
> some AddXXX method in TTable and nothing....
> How to achieve this?

> Please help!

> Thanks in advance

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