TreeView : TreeView : GUI Windows Forms C# Examples

    
using  System;
using  System.Collections.Generic;
using  System.ComponentModel;
using  System.Data;
using  System.Drawing;
using  System.Text;
using  System.Windows.Forms;

public  partial  class  Form1  :  Form
{
        public  Form1()
        {
                InitializeComponent();
        }

        private  void  button1_Click(object  sender,  EventArgs  e)
        {

                treeView1.Nodes.Clear();

                TreeNode  evenNumbers  =  treeView1.Nodes.Add("Even  Numbers");
                TreeNode  oddNumbers  =    treeView1.Nodes.Add("Odd  Numbers");

                for  (int  i  =  1;  i  <  500;  i++)
                {
                        if  (i  %  2  ==  0)
                        {
                                evenNumbers.Nodes.Add(i.ToString());
                        }  else  {
                                oddNumbers.Nodes.Add(i.ToString()  );
                        }
                }
        }
}
partial  class  Form1
{
        private  void  InitializeComponent()
        {
                this.treeView1  =  new  System.Windows.Forms.TreeView();
                this.button1  =  new  System.Windows.Forms.Button();
                this.SuspendLayout();
                //  
                //  treeView1
                //  
                this.treeView1.Location  =  new  System.Drawing.Point(16,  50);
                this.treeView1.Margin  =  new  System.Windows.Forms.Padding(4);
                this.treeView1.Name  =  "treeView1";
                this.treeView1.Size  =  new  System.Drawing.Size(286,  313);
                this.treeView1.TabIndex  =  0;
                //  
                //  button1
                //  
                this.button1.Location  =  new  System.Drawing.Point(16,  15);
                this.button1.Margin  =  new  System.Windows.Forms.Padding(4);
                this.button1.Name  =  "button1";
                this.button1.Size  =  new  System.Drawing.Size(100,  28);
                this.button1.TabIndex  =  1;
                this.button1.Text  =  "Load";
                this.button1.Click  +=  new  System.EventHandler(this.button1_Click);
                //  
                //  Form1
                //  
                this.AutoScaleDimensions  =  new  System.Drawing.SizeF(8F,  16F);
                this.AutoScaleMode  =  System.Windows.Forms.AutoScaleMode.Font;
                this.ClientSize  =  new  System.Drawing.Size(316,  390);
                this.Controls.Add(this.button1);
                this.Controls.Add(this.treeView1);
                this.Margin  =  new  System.Windows.Forms.Padding(4);
                this.Name  =  "Form1";
                this.Text  =  "Form1";
                this.ResumeLayout(false);

        }

        private  System.Windows.Forms.TreeView  treeView1;
        private  System.Windows.Forms.Button  button1;
}
public  class  TreeViewAddItems
{
        [STAThread]
        static  void  Main()
        {
                Application.EnableVisualStyles();
                Application.Run(new  Form1());
        }
}