multicolumn listbox

[mkoppelgaard]

I need an object to store lab-measurements and are wondering, if it’s possible to use a multicolumn listbox.

My problem is that, I need to know the row number of the active row. By ‘the active row’, I understand the row belonging to the cell activate by user scroll using arrows/ or mouse click.

Background for my question:

I want to store the sample number I the first column. The sample numbers are imported from Excel.

The measurements for the actual sample should come in, in the cells to right in the same row.

The samples are not always ordered, which means, that I might need to scroll to the correct sample number.

In order to place the output from the measurement coming from my labView program, I need to know what is the row number of the activate row. But how ?

Is it possible using multicolumn listbox, or is there another object, which can do the trick?

In c# it’s possible to do as described using datagridview.

[AdamTrojak]

Hello!

Use event structure and multicolum listbox. For example set event to trigger for double click, and at right side border you'll be able to read number of row that was choosen. 

Then read data from first column and selected row. 

[mkoppelgaard]

Great !!!!

Thanks a lot!
I was thinking a little in that direction, but I'm new in labview.

Regards Michael

[AdamTrojak]

Glad I could help. If you'd need any more help don't hesitate to ask;)

BTW: if post is a solution, you can mark it as one;)

[mkoppelgaard]

I just tested  your solution.

I new as I mentioned and don't recognize the object after the itemNames.

What is that ?

[altenbach]

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@mkoppelgaard wrote:

I just tested  your solution.

I new as I mentioned and don't recognize the object after the itemNames.

What is that ?

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"Index array"

[mkoppelgaard]

I'm afraid I need a little more help.

I tried myself - see attached.

Could I have you example?

And is dobble click the only way to get the activecell row?

Is i possible to get the active row simply by running at piece of code in the end off my "producing my data" code?

[altenbach]

• You don't need the control reference, since you use an implicit property node.
• The ItemNames property needs to be set to "read" mode. (right-click...change to read)
• You can use a value change event so the item is displayed whenever you click once.
• You need a while loop around the event structure

[chembo · Accepted solution]

I have added some code to your VI.

• The event structure needs to be i a loop, otherwise your program will stop after the first double click
• You need to initialize the array before you start replacing elements, because it is not possible to replace non existing elements
• The Top Left property of the list box can be used to determine the index of the top left visible cell of the list box
• I used now the double click as trigger to change the content of a cell, but you could use a user generated event instead, an fire this event each time a new measurement is available.

[mkoppelgaard]

Thanks - got it now 

I take it, I can't get out which cell I'm in without using event.

I can't run my datacollection code,  and put in the data in the the selected row, without having to dobbelt click on a cell in the row or changing a value in the row.

The only way to let Labview to know which cell I'm in is to dobbeltclikk or to change value? Correct?