run in debug, doesn't work in release mode

[darknight]

hi all.
i have .net C# project which uses a C++ project as a class library.
from c++ code a connection to the ODBC database is made. when i run
the program in debug mode, it works properly, however, in release mode
(i mean with CTRL+ F5) it gives the database connection error below:

[Microsoft][ODBC Driver for Oracle][Oracle]ORA-01017:invalid username/password; logon denied

can anyone help me?

is this a registery problem, or do i need a library,or etc?

[andreshs1]

Hi,

most of the times the error is that the variables are not initialized correctly.

Make sure all the variables are initialized;

or post some code


Good Luck

[Andreas Masur]

Surviving the Release version (http://www.codeproject.com/debug/survivereleasever.asp)

[darknight]

hi again,
thanks for the replies. Now, i can connect to the DB, but still i have a problem.
in the code i want to write the data into a file. the code is as below:

char s[255];
FILE *fp;

sprintf(s,"%s\\output.txt",PROJECT_DIR);
fp=fopen(s,"w");

fprintf(fp,"Transmitter Intermodulation: SCENARIO-1\n");

again, the project works fine in debug mode, however, in release mode it gives the error below:

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
at fprintf(_iobuf* , SByte* )

i cannot see the problem, i will be appreciate to any help.
thanks.

[cilu]

Are you still using FILE in .NET?! :confused: Didn't you hear of FileInfo, FileStream, StreamWritter/Reader?

Anyway, I suspect that your file path is not set appropriatelly, so the open fails. You should test the return value.


char s[255];
FILE *fp = NULL;

sprintf(s,"%s\\output.txt",PROJECT_DIR);
fp = fopen(s,"w");

if(fp == NULL)
{
cout << "error opening file";
return;
}

fprintf(fp,"Transmitter Intermodulation: SCENARIO-1\n");

fclose(fp);

[darknight]

at last, i solved the problem. I don't know why, but in release mode the program cannot get the file directory from the specified class by using sprintf() method. Then i used System::String and then i could have read the directory correctly.

i was working in c++ code, and if i begin to use StreamReader, StreamWriter, etc, i have to rewrite the code from the start.

anyway,
thanks for the help.

[cilu]

So you cannot use System::IO::StreamReader, but you can use System::String. Cool! :D