Drag a item from Treeview to ListBox on Windows Forms (C#)

Question

I'm Writing an application in Windows forms with a File Explorer TreeView and I need a way to get the Node.FullPath in string to a ListBox using Drag and Drop.

yesterday I found this question about it:

C# Drag & drop from listbox to treeview

but I need the exactly oposite and maybe a way to hold Shitf and do the selection with more than one Node to proceed drag and drop with them

Drag and drop is the same concept which ever way you go, try working on that info and ask for specific help with issues. — BugFinder, Mar 22 '16 at 14:04
Treeview doesn't support multiselect, so either simply go for checkboxes or learn how to buld a [multiselect-treeview](http://stackoverflow.com/questions/206096/how-do-i-allow-multi-select-in-a-net-treeview). Not exactly simple though.. After studying a few drag&drop examples you should be able to tackle it. Come back when you have not just an aim but code and a problem with it.. — TaW, Mar 22 '16 at 14:14

Guilherme Golfetto · Accepted Answer · 2016-03-22T19:39:36.283

Drag&Drop is the same concept, there is the code that I used to make it happen.

    private void tvDiretorios2_ItemDrag(object sender, ItemDragEventArgs e)
    {
        //pega os Selecionados e colocar em uma lista
        List<string> listaSelecionados = new List<string>();
        foreach (TreeNode tN in tvDiretorios.SelectedNodes)
        {
            listaSelecionados.Add(tN.FullPath.ToString());
        }
        DoDragDrop(listaSelecionados, DragDropEffects.Move);
    }

    private void tvDiretorios2_DragOver(object sender, DragEventArgs e)
    {
        //Depois de DoDragDrop Existi- 2°Passo. Confirma que o que foi puxado é uma lista
        if (e.Data.GetDataPresent(typeof(List<string>)))
            e.Effect = DragDropEffects.Move;
        else
            e.Effect = DragDropEffects.None;
    }




    /** EVENTOS DROP DA LISTA */
    private void lbConvertidas_DragEnter(object sender, DragEventArgs e)
    {
        //Determina se o o objeto pode ser arrastado para o lbConvertidas
        if(e.Data.GetDataPresent(typeof(List<string>)))
            e.Effect = DragDropEffects.Move;
        else
            e.Effect = DragDropEffects.None;
    }

    private void lbConvertidas_DragDrop(object sender, DragEventArgs e)
    {
        //Toma alguma ação quando ele for solto
        //Importar(); -- Ação Principal
        var lista = e.Data.GetData(typeof(List<string>)) as List<string>;
        if (lista != null)
            lbConvertidas.Items.AddRange(lista.ToArray()); //será convertido 
    }

But to select more then One Node I used an alternative TreeView component, source link is down below.

http://www.arstdesign.com/articles/treeviewms.html

I Created a simple checking routine just to know that I'm in the right direction.

 private void BuscarSelecionados()
    {
        foreach (TreeNode tN in tvDiretorios2.SelectedNodes)
        {
            MessageBox.Show(tN.FullPath.ToString(), "Atenção");
        }
    }

The key is using this alternative TreeNode Component.

Thanks anyway to the ones who tried to help...and the ones you didn't...

Drag a item from Treeview to ListBox on Windows Forms (C#)

1 Answers1