global variable in c#
hey,
i need help with c#.
i want to define a global variable that all classes know this variable without doing 'new' in every class where i want to use this variable.
this is my program - tell me whats wrong or what should i do? (pseudo code)
public class AA
{
private static SqlConnection sqlCon;
public AA()//constructor
{
sqlCon = new SqlConnection();
sqlCon.ConnectionString = ".....";
}
public SqlConnection con2
{
get{return sqlCon;}
set{SqlCon = value;}
}
}
}
when i try to use sqlCon in other classes there is an error:
"Object reference not set to an instance of an object"
class BB
{
AA a;
public BB()//constructor
{
. . . .
}
void func1()
{
a.con2.open(); <----------- this is the error line
..........
..........
}
}
thanking you in advance
koby
spgilmorePosted Apr 15, 2004, 2:56 PM