Access to locals in the sequence

[john7]

Hi All

I need to get access to locals in my sequence file from C# in order to udate it.

How can i do it. Is there any example?

Regards.

[RayFarmer]

checkout the Computer Motherboard example in the TestStand examples folder under \Demo\.NET.

[john7]

Thanks Ray , nice example but i fail to see some locals access.

[RayFarmer]

The code modules for this example returns a boolean which is feed into the Step.Result.PassFail. Also the Error values are passed into the individual elements of Step.Result.Error.

But these code modules could have passed the data into a local variable rather than a Step property.

Similarly, data could be passed into the code module this way if the parameter of the code module was defined as an input rather than an output.

Hope this helps. I'll see if there is a better example.

[john7]

After reading Test Stand help i understand that i can get access to locals with SequenceContext object.

How can i initialize it? Should i pass my *.seq file as a parameter? In general i understand but in details it's quite obscure.

[RayFarmer]

John,

there is an example from juergen in

http://forums.ni.com/t5/NI-TestStand/how-can-I-disply-multiple-window-based-on-previous-window-value...

that may help.

[john7]

Thank you Ray i'll try.

[john7]

After some studying i came with code:

s

string str;
string seq_file_path = Path.GetDirectoryName(Application.ExecutablePath) + "\\Demo.seq";


private void buttonExecute_Click(object sender, EventArgs e)
        {
            Engine my_egine = new Engine();
            SequenceFile seq_file = my_egine.GetSequenceFileEx(seq_file_path, 0,           TypeConflictHandlerTypes.ConflictHandler_UseGlobalType);
            SequenceContext seq_cont = seq_file.NewEditContext(); 
            PropertyObject prop_obj = seq_cont.AsPropertyObject();
            str = prop_obj.GetValString("Locals.strTextBox", 0);
            MessageBox.Show(str);
        }

 I get an exeption:

Unknown variable or property name 'Locals'.
Error accessing item 'Locals.strTextBox'.

What do i wrong?

[RayFarmer]

Hi John,

You need to get a reference to a Sequence within the SequenceFile to see the Locals.

At SequenceFile level you can see any FileGlobals.

Hope this helps

[john7]

Hi Ray,

How i get a reference to a Sequence within the SequenceFile ?

Could you explain it by example?