Oledbcommand not updating msa 1500 firmware updating guide
I hope using oledb parameters the fields can be updated. This annoyed me, screwy little Ole DB, so I'll post my solution here for posterity. Ole DB doesn't recognize named parameters, but it apparently does recognize that you're to convey a named parameter, so you can use that to your advantage and make your SQL semantic and easier to understand. New Parm = new Ole Db Parameter( "Parm For Another Field", New Value For Another Field ); New Parm. So long as they're passed in the same order, it'll accept a variable as a named parameter. Null Reference Exception – “Object reference not set to an instance of an object.” You see people asking about this everywhere; about why are they getting this error. Note, regardless of the scenario, the cause is always the same in .Net: You are trying to use a reference variable who’s value is Nothing/null.For more information, see Generating Commands with Command Builders.
You either never assigned something to the variable, never created an instance of the value assigned to the variable, or you set the variable equal to Nothing/null manually, or you called a function that set the variable to Nothing/null for you. You don’t have to use the “new” keyword, but by default the value is Nothing/null.String My Query = "Update My Table set Some Field = ? See: low-bandwidth.au/2013/12/If you DON'T declare the parameters in SQL, Ole Db uses purely positional parameter insertion, and it doesn't matter if the names of the parameters match the SQL, or if parameters are used twice in the SQL - it will just go through and blindly replace any found parameters in the SQL in order from start to end, with those passed. NET Provider does not support named parameters for passing parameters...Every once in awhile, you come across this exception: System.