how to retrieve informatin from deleted row?

[Ansari]

hi all,

I have some deleted row in datatable and I want to process these rows
following is the code:

With cmdDel
dim drs() as datatable = dtDetail.Select(Nothing, Nothing,
DataViewRowState.Deleted)
Dim dr as DataRow
For Each dr In drs '
.CommandText = "DELTE FROM Table1 WHERE Id = " & dr!Id
'************************* here i get the error
.ExecuteNonQuery()
Next
End With

I get the following error message

"System.Data.DeletedRowInaccessibleException - Deleted row information
cannot be accessed through the row."

So, how can I retrieve field values from a deleted row,...

Thanks in advance

Ansari

 

[Ritesh Jain via DotNetMonster.com]

Hi,
There is one alternative that u can try.........

'copy all the Deleted Rows into another Tables
dim dtDeleted as Datatable

dtDeleted = dtDetail.GetChanges(DataRowState.Deleted)
dtDeleted .RejectChanges

With cmdDel
Dim dr as DataRow
For Each dr In dtDeleted.Rows '
.CommandText = "DELTE FROM Table1 WHERE Id = " & dr!Id
'************************* here i get the error
.ExecuteNonQuery()
Next
End With


Regards,
Ritesh

 

[Eric Barr]

to get values from a deleted row you need use the Original version of
the row ...something like ...



If oDR.RowState = DataRowState.Deleted Then
myValue = oDR(fieldName, DataRwoVersion.Original)
Else
myValue = oDR(fieldName)
End If


Hope that helps,
-eric

 

[W.G. Ryan eMVP]

You can use the Rowstatefilter and set it to Deleted
http://www.knowdotnet.com/articles/dataviews1.html

It'd be a lot easier though to just specify a real Delete command for your
adapter and let Update handle it - you can use Getchanges to just get the
changed rows taht were deleted- + Don't use Dynamic Sql - it's dangerous and
error prone - if you must - use a parameterized query.

..CommandText = "DELTE FROM Table1 WHERE Id = @IdValue"
cmdDel.Parameters("@IdValue").Value = dr!Id

 

[Jim Hughes]

DELTE should be spelled DELETE