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try catch Did not catch the exception
Posted: Wed 10 Nov 2010 03:45
by xjhwc10
I use C++BUILDER6+unidac3.5
try
{
、、、
UQRY->ApplyUpdates();
DM->UTT1->CommitRetaining();
}
catch(EIBCError &e)
{
ShowMessage("aaaaa");
｝
program run and When an error,but Not implemented "ShowMessage("aaaaa");" why?
I want "335544665" this error.
Posted: Wed 10 Nov 2010 13:27
by AndreyZ
Hello,
You should catch EUniError instead of EIBCError.
Posted: Wed 10 Nov 2010 14:00
by xjhwc10
try
{
、、、
UQRY->ApplyUpdates();
DM->UTT1->CommitRetaining();
}
catch(EUniError &e)
{
//use "EUniError &e",Exceptions can be caught,but How to get "GDSCODE"，For example："335544665" this error。
//I use C++BUILDER 6 and firebird 2.1
｝
Posted: Wed 10 Nov 2010 15:31
by AndreyZ
UniDAC converts EIBCError to the EUniError exception. You can use the EUniError.InnerError property to get an inner exception like in the following code:
Code: Select all
try
{
UniQuery->ApplyUpdates();
}
catch(EUniError &e)
{
EIBCError *eribc = static_cast(e.InnerError);
ShowMessage(IntToStr(eribc->ErrorNumber));
}
Posted: Wed 17 Nov 2010 09:59
by xjhwc10
I am sorry ,I made a mistake,
catch(EUniError &e) Can not Exceptions ，catch(Exception &e) can Exceptions,how i can Exception->EDatabaseError->EUniError->EIBCError,get "GDSCODE"，For example："335544665" this error
Posted: Thu 18 Nov 2010 08:07
by AndreyZ
The "335544665" error is a violation of the primary or unique keys. You can get this error from the ErrorNumber property of the EIBCError class. Here is an example:
Code: Select all
try
{
UniQuery->Append();
UniQuery->FieldByName("ID")->AsInteger = 1; // field "ID" is a primary key
UniQuery->Post();
UniQuery->Append();
UniQuery->FieldByName("ID")->AsInteger = 1;
UniQuery->Post();
UniQuery->ApplyUpdates();
}
catch(EUniError &e)
{
EIBCError *eribc = static_cast(e.InnerError);
ShowMessage(IntToStr(eribc->ErrorNumber)); // here you will see the message "335544665"
}