[RESOLVED] Object Reference Error

[computerman]

SystemTree.Nodes(0).Nodes("VIDEO").Nodes.Add(queryObj("Caption"))     <------ This Works
SystemTree.Nodes(0).Nodes("VIDEO").Nodes(CStr(queryObj("Caption"))).Tag = CStr(queryObj("Caption"))     <----- This Does Not

Error : Object reference not set to an instance of an object.

I have a similar piece of code which does not produce the error:

SystemTree.Nodes(0).Nodes("HardDrives").Nodes(CStr(queryObj("Model"))).Tag = queryObj("Index")

Both Caption and Index are of type string, so why does one work and not the other?

Computerman

[kaliman79912]

I don't know if this would be enaugh, but I noticed that in the first case you are converting the result of the query to a string, and in the working one you are not.

[computerman]

I tried with and without the CStr in, with the same results.

COmputerman

[computerman]

By adding the highlighted parameter, the error cleared.

SystemTree.Nodes(0).Nodes("VIDEO").Nodes.Add(queryObj("Caption"), queryObj("Caption"))

MSDN does not make it clear that you need to add this extra parameter for the .TAG to work.

Computerman