I have a structure (which happens to be a Java DataBean that contains some
string arrays) that is giving me an error.
The error at the "for" statement is:
Object reference not set to an instance of an object.
Here is the code where chDataBean is the structure.
chDataBean.vouc herNumber is a string array of voucher numbers. But if there
are no numbers the debugger shows it as <undefined value>. But other fields
are showing as null in the debugger. What is the difference? How would I
test for each one? I assume I would have to do a test before the "for"
statement, since that is where I am getting the error.
*************** *************** *************** *************** ***
chDataBean = checkHistorySer vice.readCheckH istory(
elDataBean.empl oyeeIds[ktr],
ruDataBean.empl oyerList[1][0],
"2006",
Session.Session ID);
for(ktr1=0;ktr1 <= chDataBean.vouc herNumber.GetUp perBound(0);ktr 1++)
{
GetPayStatement Data(ref sCheckLine,objS treamWriter,
elDataBean.empl oyeeIds[ktr],chDataBean.vou cherNumber[ktr1],chDataBean.pay Date[ktr1],
ruDataBean.empl oyerList[1][0],eDataBean);
}
*************** *************** *************** *************** ************
Thanks,
Tom
6  6080 
tshad <ts**********@f tsolutions.com> wrote: I have a structure (which happens to be a Java DataBean that contains some
string arrays) that is giving me an error.
The error at the "for" statement is:
Object reference not set to an instance of an object.
Here is the code where chDataBean is the structure.
chDataBean.vouc herNumber is a string array of voucher numbers. But if there
are no numbers the debugger shows it as <undefined value>. But other fields
are showing as null in the debugger. What is the difference? How would I
test for each one? I assume I would have to do a test before the "for"
statement, since that is where I am getting the error.
They're the same thing - I don't know why the debugger shows them
differently, although it might be that it shows local variables which
have been assigned a value as null, but local variables which just
haven't been assigned yet as "undefined value".
Comparing with null would be better in either case.
By the way - if your array is a one-dimensional one, using
GetUpperBound is a bit messy compared with:
for (ktr1=0; ktr1 < chDataBean.vouc herNumber.Lengt h; ktr1++)
--
Jon Skeet - <sk***@pobox.co m> http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too
Hi, They're the same thing - I don't know why the debugger shows them
differently, although it might be that it shows local variables which
have been assigned a value as null, but local variables which just
haven't been assigned yet as "undefined value".
I think that both the debugger and the intellisense display <undefined
value> instead of null either way
--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation
"Jon Skeet [C# MVP]" <sk***@pobox.co m> wrote in message
news:MP******** *************** *@msnews.micros oft.com... tshad <ts**********@f tsolutions.com> wrote: I have a structure (which happens to be a Java DataBean that contains
some
string arrays) that is giving me an error.
The error at the "for" statement is:
Object reference not set to an instance of an object.
Here is the code where chDataBean is the structure.
chDataBean.vouc herNumber is a string array of voucher numbers. But if
there
are no numbers the debugger shows it as <undefined value>. But other
fields
are showing as null in the debugger. What is the difference? How would
I
test for each one? I assume I would have to do a test before the "for"
statement, since that is where I am getting the error.
They're the same thing - I don't know why the debugger shows them
differently, although it might be that it shows local variables which
have been assigned a value as null, but local variables which just
haven't been assigned yet as "undefined value".
Comparing with null would be better in either case.
Great.
By the way - if your array is a one-dimensional one, using
GetUpperBound is a bit messy compared with:
for (ktr1=0; ktr1 < chDataBean.vouc herNumber.Lengt h; ktr1++)
Why?
Tom
--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too
"Ignacio Machin ( .NET/ C# MVP )" <ignacio.mach in AT dot.state.fl.us > wrote
in message news:%2******** ********@TK2MSF TNGP02.phx.gbl. .. Hi,
They're the same thing - I don't know why the debugger shows them
differently, although it might be that it shows local variables which
have been assigned a value as null, but local variables which just
haven't been assigned yet as "undefined value".
I think that both the debugger and the intellisense display <undefined
value> instead of null either way
Actually, I am looking at a structure and am getting something like:
field1 null
field2 null
field3 null
field4 <undefined value>
field4 <undefined value>
field3 null
field4 <undefined value>
field3 null
field4 <undefined value>
....
Tom
--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation
tshad <ts**********@f tsolutions.com> wrote: By the way - if your array is a one-dimensional one, using
GetUpperBound is a bit messy compared with:
for (ktr1=0; ktr1 < chDataBean.vouc herNumber.Lengt h; ktr1++)
Why?
Because it's easier to read (and write) .Length than .GetUpperBound( 0).
--
Jon Skeet - <sk***@pobox.co m> http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too
"Jon Skeet [C# MVP]" <sk***@pobox.co m> wrote in message
news:MP******** *************** *@msnews.micros oft.com... tshad <ts**********@f tsolutions.com> wrote: > By the way - if your array is a one-dimensional one, using
> GetUpperBound is a bit messy compared with:
>
> for (ktr1=0; ktr1 < chDataBean.vouc herNumber.Lengt h; ktr1++)
Why?
Because it's easier to read (and write) .Length than .GetUpperBound( 0).
Reasonable.
Thanks,
Tom
--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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