CheckedListBox : CheckedListBox : GUI Windows Forms C# Examples

    
using  System;
using  System.Drawing;
using  System.Windows.Forms;
using  System.Data;
using  System.Data.SqlClient;

public  class  CheckedListBoxes  :  Form
{
    CheckedListBox  clb;
    Button  btnToggle;
    Button  btnClear;
    String  str;

    public  CheckedListBoxes()
    {
        Size  =  new  Size(300,400);
        this.Load  +=  new  EventHandler(this_Load);

        clb  =  new  CheckedListBox();
        clb.Parent  =  this;
        clb.Location  =  new  Point(10,10);
        clb.Size  =  new  Size(ClientSize.Width  -  20,  Height  -  240);
        clb.Anchor  =  AnchorStyles.Top  |  AnchorStyles.Left  |  AnchorStyles.Right  |  AnchorStyles.Bottom;
        clb.BorderStyle  =  BorderStyle.Fixed3D;
        clb.MultiColumn  =  true;
        clb.ScrollAlwaysVisible  =  true;
        clb.ThreeDCheckBoxes  =  true;    
        clb.CheckOnClick  =  true;
        clb.ItemCheck  +=  new  ItemCheckEventHandler(clb_ItemCheck);

        //    Toggle  Indeterminate  Button
        btnToggle  =  new  Button();
        btnToggle.Parent  =  this;
        btnToggle.Text  =  "Toggle  Indeterminate";
        btnToggle.Size  =  new  Size((int)(Font.Height  *  .75)  *  btnToggle.Text.Length,  Font.Height  +  10);
        btnToggle.Location  =  new  Point(  clb.Left,  clb.Bottom  +  10);
        btnToggle.Anchor  =  AnchorStyles.Left  |  AnchorStyles.Bottom;
        btnToggle.Click  +=  new  System.EventHandler(btnToggle_Click);

        //    Clear  Button
        btnClear  =  new  Button();
        btnClear.Parent  =  this;
        btnClear.Text  =  "Clear  All";
        btnClear.Size  =  new  Size((int)(Font.Height  *  .75)  *  btnClear.Text.Length,  Font.Height  +  10);
        btnClear.Location  =  new  Point(btnToggle.Left,  btnToggle.Bottom  +  10);
        btnClear.Anchor  =  AnchorStyles.Left  |  AnchorStyles.Bottom;
        btnClear.Click  +=  new  System.EventHandler(btnClear_Click);

        clb.Items.Add("12345");
            clb.Items.Add("67890");            
            clb.Items.Add("7890");            
            clb.Items.Add("890");                        
    }    

    static  void  Main()  
    {
        Application.Run(new  CheckedListBoxes());
    }

    private  void  btnToggle_Click(object  sender,  EventArgs  e)
    {
        for  (int  i  =  0;  i  <=  (clb.Items.Count  -  1);  i++)
        {
            if  (clb.GetItemCheckState(i)  ==  CheckState.Checked)
            {
                clb.SetItemCheckState(i,  CheckState.Indeterminate);    
            }
            else  if  (clb.GetItemCheckState(i)  ==  CheckState.Indeterminate)
            {
                clb.SetItemCheckState(i,  CheckState.Checked);    
            }
        }    
    }

    private  void  btnClear_Click(object  sender,  EventArgs  e)
    {
        clb.ClearSelected();

        for  (int  i  =  0;  i  <=  (clb.Items.Count  -  1);  i++)
        {
            clb.SetItemChecked(i,  false);    
        }
    }

    private  void  clb_ItemCheck(object  sender,  ItemCheckEventArgs  e)
    {
        Console.WriteLine("Current  Item:"  +  clb.GetItemText(clb.Items[e.Index]));
        Console.WriteLine("Current  Index:"  +  e.Index.ToString()  );
        Console.WriteLine("Current  Value:"  +  e.CurrentValue.ToString()  );
        Console.WriteLine("New  Value:"  +  e.NewValue.ToString()  );
    }

    private  void  clb_SelectedIndexChanged(object  sender,  EventArgs  e)
    {
        Console.WriteLine("Selected  Items:"  +  clb.SelectedItems.Count.ToString()  );
        Console.WriteLine("Checked  Items:"  +  clb.CheckedItems.Count.ToString()  );
    }

    private  void  this_Load(object  sender,  EventArgs  e)
    {
        clb.SelectedIndexChanged  +=  new  EventHandler(clb_SelectedIndexChanged);
    }
}