Error when changing data value in strongly typed dataset table?

  • Thread starter Thread starter Keithb
  • Start date Start date
K

Keithb

I am trying to change the value of a field in a table that is a member of
strongly typed DataSet. The code:

foreach (DataRow rw in dt.Rows) {
rw.ItemArray[16] = (string)c3Text;
}

does not change the content of the item.

Using debugging tools to look at rw, I see this message where the data
should be.

"c3LabelText = '((DataSet1.DisplayRow)(rw)).c3LabelText' threw an exception
of type 'System.Data.StrongTypingException'"

What am I doing wrong?

Thanks,

Keith
 
hejdig.
I am trying to change the value of a field in a table that is a member of
strongly typed DataSet. The code:
foreach (DataRow rw in dt.Rows) {
rw.ItemArray[16] = (string)c3Text;
}
does not change the content of the item.
Using debugging tools to look at rw, I see this message where the data
should be.
"c3LabelText = '((DataSet1.DisplayRow)(rw)).c3LabelText' threw an
exception of type 'System.Data.StrongTypingException'"
Click to expand...

If c3Text is a textbox (hard to tell from the variable name) then you
probably want to use c3Text.Text since you otherwise try to cast a TextBox
object to a System.String.

Another possibility, though I doubt it, is that 16 is wrong. It is a large
number and to count to the 17th item (which 16 points to) without jumping
over a column might be tricky.
Couldn't you use something like
rw[ dt.myColumn.ColumnName ] = ....
because then you know you are at the right place.
?

HTH

/OF
 
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