Hi,
In my ASP.NET 2.0 web app, I have a user control,
ucBinEdges, with several
text boxes. The user control has several validation
controls validating
the Text of these text boxes - CompareValidator,
RangeValidator,
RequiredFieldValidator, and a ValidationSummary. The page
using
ucBinEdges is a content page working in conjunction with a
master page.
The master page defines two ContentPlaceHolders: cphLeftNav
and
cphReportContent. ucBinEdges is placed in cphLeftNav. The
other content
area, cphReportContent, contains a bunch of other ASP.NET
controls.
There are several problems:
1. After adding the validation controls to ucBinEdges, the
contents of
cphReportContent do not render to the browser. However, if
I add
EnableClientScript="false" to each of the
validation controls, everything
displays correctly. Of course, now the validation does not
occur client-
side, but only on a postback.
2. Living with only server-side validation for the moment,
the validation
occurs *after* the user control Page_Load and TextBox
TextChanged event
handlers are fired. This means that code which depends on
valid values
blows up. For example, the following line raises an
exception if the the
Text property is "abc":
AmountBinMin = Convert.ToInt32(txtMin.Text)
3. OK, so I wrapped the potentially offending lines in a
try block, an
inelegant hack at best. Now the validation works fine.
Except I am back
to the problem where the contents of cphReportContent do not
display when
the page posts back.
4. Finally, if the user corrects the invalid value in the
text box and
clicks on a button in cphLeftNav, the following exception is
raised:
Invalid postback or callback argument. ... blah blah
blah ... use the
ClientScriptManager.RegistserForEventValidation method
in order to register the postback or callback for data
validation.
Anybody know what is going on here? It seems the best
solution would be
to get the client-side validation working. Failing that, I
will probably
have to remove the validation controls entirely and do the
data validation
myself.
Thanks for any suggestions.
Dan
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