c# - How to get the FirstOrDefault added/updated/deleted data Row in a data Table? -

i'm developing external .dll epicor erp calls in bpm's pre/post processing. .dll written in c# , epicor passes .dll dataset.

i've seen code examples either changed rows or firstordefault not both.

this code null never gets called.

var ttquotedtl = ds.quotedtl.where(r => r.rowmod == icerow.rowstate_added || r.rowmod == icerow.rowstate_updated || r.rowmod == icerow.rowstate_deleted);  var ttquotedtl_xrow = (from ttquotedtl_row in ttquotedtl select ttquotedtl_row).firstordefault();   if (ttquotedtl_xrow != null) {   //do  } 

i can ttquotedtl not null , perform work if call this:

var ttquotedtl_xrow = ds.quotedtl.firstordefault(); 

but i'm concerned won't row has been added, updated or deleted.

you can combine two, linq statements composable.

var quotedtlrow =      ds.quotedtl     .where(r =>          r.rowmod == icerow.rowstate_added ||          r.rowmod == icerow.rowstate_updated ||          r.rowmod == icerow.rowstate_deleted     ).firstordefault(); 

if null may need see more code.

incidentally, if ds dataset passed bpm method row ds.quotedetail implements icerow interface. provides methods .added(), .updated(), .deleted() , .unchanged() meaning above can shortened

var quotedtlrow =      ds.quotedtl     .where(         r => !r.unchanged()     ).firstordefault();