CODEWITHSUNDEEP
c#monomonodevelopgtk#gtktreeview
José Medina
José Medina

Reputation: 11

How to transfer selected row from a TreeView to another TreeView? GTK#

How can I transfer selected rows from a Treeview to another Treeview when I click a Button?

I've been trying to create a ListStore with the selections of treeview1 and give it to treeview2 as a TreeModel, but I haven't been successful.

UPDATE: I figured out a way, by using OnTreeservicesRowActivated OnTreeservicesRowActivated event (can still be done with a button) and the code below. It "mixes" the rows if I click too fast, but that's a minor annoyance. Thanks for the answers

using System;
using Gtk;
using MySql.Data.MySqlClient;

namespace Proyect
{
   public partial class Window : Gtk.Window
{
       public Window() :
            base(Gtk.WindowType.Toplevel)
        {
            this.Build();
            //Adds columns to TreeViews
            CreateTreeView(treeservices,tree2);
            treeservices.Selection.Mode = SelectionMode.Single;
        }

//List to populate tree2.
ListStore tree2list = new ListStore(typeof(string), typeof(string), typeof(string));

//Class for validating entry's and misc.
    Validation val = new Validation();

//MySql connection
    MySqlConnection c = new MySqlConnection(//connectionstring)
    MySqlDataReader dr;
    MySqlCommand cmd;

    //CellRendererText for treeservices.
    CellRendererText cellserv1 = new CellRendererText();
    CellRendererText cellserv2 = new CellRendererText();
    CellRendererText cellserv3 = new CellRendererText();


    void CreateTreeView(TreeView treeservices, TreeView tree2 )
    {
        treeservices.AppendColumn("Code", cellserv1, "text", 0);
        treeservices.AppendColumn("Name", cellserv2, "text", 1);
        treeservices.AppendColumn("Price", cellserv3, "text", 2);
        treeservices.Model = Services();

        tree2.AppendColumn("Code", new CellRendererText(), "text", 0);
        tree2.AppendColumn("Name", new CellRendererText(), "text", 1);
        tree2.AppendColumn("Price", new CellRendererText(), "text", 2);
    }


    ListStore Services()
    {
        //Returns a ListStore from local MySql Database
    }

//Adds a service to tree2 when a row is double clicked
    protected void OnTreeservicesRowActivated(object o, RowActivatedArgs args)
    {   
        tree2list.AppendValues(cellserv1.Text, cellserv2.Text, cellserv3.Text);
        tree2.Model = tree2list;
    }
}

Upvotes: 1

Views: 406

Answers (1)

Marc Van De Sandt
Marc Van De Sandt

Reputation: 81

Add Afterselect event on your treeview object

    private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
    {
      //Set TreeNode variable to the selected node
      TreeNode Nodetosave = this.treeView1.SelectedNode;
      //Add Nodetosave to your second tree in your button event
    }

This is my first ever stackoverflow answer , please excuse if i missed any formating. If you want to store multiple TreeNodes then make a list of TreeNodes and add every selected treenode, then iterate over them in you button event and add them one by one to your other tree.

Upvotes: 1

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