Multiple 'Findby' functions in typed dataset table?

  • Thread starter Thread starter Simon Storr
  • Start date Start date
S

Simon Storr

I have a typed dataset table with a primary key (id) and another unique key
(name). Generating the dataset creates FindById for the primary key, but
won't create 'FindByName', even though name is unique (I had to hack the XML
to make the key unique by changing the xs:key tag to xs:unique). I've tried
tricking it into thinking that name is also a PK but it then only creates
FindByName! The only way I've found to do a find on name is a hack using the
DefaultView client side which is far from ideal :o( Is it possible to have
multiple 'FindBy's generated for one table?

TIA!

Simon
 
Could you create a sub class of the typed dataset that implements your
findby(s)?

I haven't tried this, but I don't see why it shouldn't work.

Steve
 
Hi Simon,

FindBy methods are only generated for primary keys. VS .Net doesn't
generate them for columns that are only unique. This feature is by design.
As Steve says, you can create a sub class of the typed DataSet and
implements your own FindBy method.

Kevin Yu
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--------------------
| From: "Steve Drake" <Steve@_NOSPAM_Drakey.co.uk>
| References: <[email protected]>
| Subject: Re: Multiple 'Findby' functions in typed dataset table?
| Date: Tue, 4 Nov 2003 15:51:57 -0000
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|
| Could you create a sub class of the typed dataset that implements your
| findby(s)?
|
| I haven't tried this, but I don't see why it shouldn't work.
|
| Steve
|
| | > I have a typed dataset table with a primary key (id) and another unique
| key
| > (name). Generating the dataset creates FindById for the primary key, but
| > won't create 'FindByName', even though name is unique (I had to hack the
| XML
| > to make the key unique by changing the xs:key tag to xs:unique). I've
| tried
| > tricking it into thinking that name is also a PK but it then only
creates
| > FindByName! The only way I've found to do a find on name is a hack using
| the
| > DefaultView client side which is far from ideal :o( Is it possible to
have
| > multiple 'FindBy's generated for one table?
| >
| > TIA!
| >
| > Simon
| >
| >
|
|
|
 
Thanks, I will try that but I'm wary of doing it as the typed dataset is
auto-generated. Why is this by design? If its a unique key unique why can't
such a method be implemented? In a future version even a non-unique key
could return a rowset?

cheers,

Simon
 
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