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Thread: Listview Multiselect

Fajar
Posts: 32

Listview Multiselect Your last visit to this thread was on 1/1/1970 12:00:00 AM

Posted: 12 May 06 3:34 AM

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Hi all,

i have a question, how can i retrieve all selected items (multi select) on a listview control.
i can only retrieve first selected item trough listview.Selected, is there any way to achieve what i aim?

if i use checkboxes, i must iterate through all items in listview to check whether these are the selected items,
but it can decrease performance.

sorry for my lack of knowledge.

thx a lot,
-Fajar

[Reply][Quote]

Ryan Farley
Posts: 2265

Re: Listview Multiselect Your last visit to this thread was on 1/1/1970 12:00:00 AM

Posted: 12 May 06 3:34 PM

IIRC, the SLX ListView control is lacking some things like a SelectedItems collection. I believe your only way to do what you are looking for is something like this:

Dim i

    For i = 0 To ListView1.Items.Count - 1
        If ListView1.Items.Items(i).Selected Then  
            ' notice the wacky Items.Items for the SLX ListView control (not a typo ) 
            MsgBox ListView1.Items.Items(i).Caption & " is selected"
        End If
    Next

[Reply][Quote]

Jeremy Brayton
Posts: 491

Re: Listview Multiselect Your last visit to this thread was on 1/1/1970 12:00:00 AM

Posted: 14 May 06 9:20 AM

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I use checkboxes and what Ryan says is true. When you use checkboxes or just select them, you have to iterate through the collections and add things yourself.

Here's how I use a ListView:
1) Set it to details mode
2) Turn on checkbox (which does this for the first "column" or the item)
3) Rename the Item or topmost column to ID.
4) Change the width to be just after ID. This will give you just enough room for the checkbox.
5) Store the primary key in this field and keep it from being resizeable. The width I use you're able to just barely make out that there's data there.

When I use a ListView in this manner I'm always mimicing a datagrid. The remaining "columns" are basically read-only, gathered from the database and discarded after everything's done. Since it only handles string data, I do conversions and handle NULLs (it has a serious problem if you try to put in ""). When I need to do something with this data I read the selected primary key only and do manipulation of the database from there. I built my own ListView class that has a SelectedItems() method to throw the primary keys into an array for multiple items or a string for only one item. I then join the array using "," as the separator, surround the output by () and I can use that in a select in statement. If only the string is returned I use a normal select statement.

[Reply][Quote]

Alan Gates
Posts: 2

Re: Listview Multiselect Your last visit to this thread was on 1/1/1970 12:00:00 AM

Posted: 21 Mar 07 2:53 PM

Ryan,
This is and excellent (and simple) piece of code. Instead of listing the caption for the main item, how do I access the caption for a subitem?

Thanks in advance!
Alan

[Reply][Quote]

Ryan Farley
Posts: 2265

Re: Listview Multiselect Your last visit to this thread was on 1/1/1970 12:00:00 AM

Posted: 21 Mar 07 3:02 PM

Quote:

Originally posted by Alan Gates

Ryan,
This is and excellent (and simple) piece of code. Instead of listing the caption for the main item, how do I access the caption for a subitem?

Thanks in advance!
Alan

The subitems are simply a collection of strings. This sample will display in a msgbox the second column (ie: the first subitem) for a given item at index i.

MsgBox ListView1.Items.Items(i).SubItems(0)

Make sense?

[Reply][Quote]

satz
Posts: 75

Re: Listview Multiselect Your last visit to this thread was on 1/1/1970 12:00:00 AM

Posted: 29 Mar 12 3:57 AM

I have added items and subitems in the listview control. When i see the control in Saleslogix it shows only the items and not the subitems.

How do i make the subitems visible in the Slx screen.

[Reply][Quote]

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