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c# - 如何将选定的行从 TreeView 转移到另一个 TreeView？GTK#

问题描述

单击 a 时如何selected rows从 a转移Treeview到另一个？TreeviewButton

我一直在尝试ListStore使用 的选择创建 atreeview1并将其treeview2作为 a TreeModel，但我没有成功。

更新：我想出了一种方法，通过使用OnTreeservicesRowActivatedOnTreeservicesRowActivated 事件（仍然可以通过按钮完成） 和下面的代码。如果我点击得太快，它会“混合”这些行，但这是一个小麻烦。感谢您的回答

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;
    }
}

标签： c#monomonodevelopgtk#gtktreeview

解决方案

在树视图对象上添加 Afterselect 事件

    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
    }

这是我第一次在stackoverflow上回答，如果我错过了任何格式，请原谅。如果要存储多个 TreeNode，则创建一个 TreeNode 列表并添加每个选定的树节点，然后在您的按钮事件中迭代它们并将它们一一添加到您的另一棵树。

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