最近要研究winform(2.0)的控件和vc++ 2008的控件,先做的是winform控件.

随便找了个CheckedListBox来看看,本来预计20分钟搞定一个自定义List的绑定,然后捉出勾选的内容,结果用了25分钟完成.

后来想了解多点CheckedListBox的属性和功能,就上了MSDN查CheckedListBox类,查到了一个"示例",使用方法比较全面,可是没有自定义List的绑定和捉出勾选内容的部分,郁闷.

现在把两部分都贴出来,供日后使用哪个和参考.

一.网上找到的

１．checkedlistbox的绑定

　　CheckedListBox应该是由ListBox扩展而来的？但在使用的时候，可能会发现——它不支持DataSource属性，不能像ListBox那样指定其数据源为一个DataTable。
        事实上，CheckedListBox像ListBox一样有DataSource属性，DisplayMember和ValueMemeber属性也都是有的，只是IntelliSense不能将其智能感知出来。

　　因此，我们可以通过代码将CheckedListBox绑定．

　eg：

　　this.checklbUser.DataSource = ds.Tables["table１"];
　　this.checklbUser.DisplayMember = "UserName";
　　this.checklbUser.ValueMember = "UserID";

２．如何获取checkedlistbox的DisplayMember和ValueMember

for(int i=0; i < checklbUser.Items.Count; i )
{
if(checklbUser.GetItemChecked(i)==true)
{
MessageBox.Show(checklbUser.GetItemText(checklbUser.Items[i]));//获取DisplayMember

MessageBox.Show( ds.Tables["table１"].Rows[i]["UserID"].ToString() );//获取ValueMember

//其实上面用ds捉出数据,未免太牵强了.

}
}

二.微软找到的示例.开一个winformApplication,把program.cs的内容清空,贴上下面的代码,自己看咯.

namespace WindowsApplication1
{
   using System;
   using System.Drawing;
   using System.Collections;
   using System.ComponentModel;
   using System.Windows.Forms;
   using System.Data;
   using System.IO ;

public class Form1 : System.Windows.Forms.Form
   {
      private System.Windows.Forms.CheckedListBox checkedListBox1;
      private System.Windows.Forms.TextBox textBox1;
      private System.Windows.Forms.Button button1;
      private System.Windows.Forms.Button button2;
      private System.Windows.Forms.ListBox listBox1;
      private System.Windows.Forms.Button button3;
        private System.ComponentModel.Container components;

public Form1()
      {
            InitializeComponent();

// Sets up the initial objects in the CheckedListBox.
            string[] myFruit = {"Apples", "Oranges","Tomato"};
         checkedListBox1.Items.AddRange(myFruit);

// Changes the selection mode from double-click to single click.
         checkedListBox1.CheckOnClick = true;
      }

protected override void Dispose( bool disposing )
   {
  if( disposing )
  {
   if (components != null)
   {
     components.Dispose();
   }
  }
  base.Dispose( disposing );
   }

private void InitializeComponent()
      {
         this.components = new System.ComponentModel.Container();
         this.textBox1 = new System.Windows.Forms.TextBox();
         this.checkedListBox1 = new System.Windows.Forms.CheckedListBox();
         this.listBox1 = new System.Windows.Forms.ListBox();
         this.button1 = new System.Windows.Forms.Button();
         this.button2 = new System.Windows.Forms.Button();
         this.button3 = new System.Windows.Forms.Button();
         this.textBox1.Location = new System.Drawing.Point(144, 64);
         this.textBox1.Size = new System.Drawing.Size(128, 20);
         this.textBox1.TabIndex = 1;
         this.textBox1.TextChanged += new System.EventHandler(this.textBox1_TextChanged);
         this.checkedListBox1.Location = new System.Drawing.Point(16, 64);
         this.checkedListBox1.Size = new System.Drawing.Size(120, 184);
         this.checkedListBox1.TabIndex = 0;
         this.checkedListBox1.ItemCheck += new System.Windows.Forms.ItemCheckEventHandler(this.checkedListBox1_ItemCheck);
         this.listBox1.Location = new System.Drawing.Point(408, 64);
         this.listBox1.Size = new System.Drawing.Size(128, 186);
         this.listBox1.TabIndex = 3;
         this.button1.Enabled = false;
         this.button1.Location = new System.Drawing.Point(144, 104);
         this.button1.Size = new System.Drawing.Size(104, 32);
         this.button1.TabIndex = 2;
         this.button1.Text = "Add Fruit";
         this.button1.Click += new System.EventHandler(this.button1_Click);
         this.button2.Enabled = false;
         this.button2.Location = new System.Drawing.Point(288, 64);
         this.button2.Size = new System.Drawing.Size(104, 32);
         this.button2.TabIndex = 2;
         this.button2.Text = "Show Order";
         this.button2.Click += new System.EventHandler(this.button2_Click);
         this.button3.Enabled = false;
         this.button3.Location = new System.Drawing.Point(288, 104);
         this.button3.Size = new System.Drawing.Size(104, 32);
         this.button3.TabIndex = 2;
         this.button3.Text = "Save Order";
         this.button3.Click += new System.EventHandler(this.button3_Click);
         this.ClientSize = new System.Drawing.Size(563, 273);
         this.Controls.AddRange(new System.Windows.Forms.Control[] {this.listBox1,
                                                        this.button3,
                                                        this.button2,
                                                        this.button1,
                                                        this.textBox1,
                                                        this.checkedListBox1});
         this.Text = "Fruit Order";
      }

[STAThread]
      public static void Main(string[] args)
      {
         Application.Run(new Form1());
      }

// Adds the string if the text box has data in it.
      private void button1_Click(object sender, System.EventArgs e)
      {
         if(textBox1.Text != "")
         {
            if(checkedListBox1.CheckedItems.Contains(textBox1.Text)== false)
               checkedListBox1.Items.Add(textBox1.Text,CheckState.Checked);
            textBox1.Text = "";
         }

}
      // Activates or deactivates the Add button.
      private void textBox1_TextChanged(object sender, System.EventArgs e)
      {
         if (textBox1.Text == "")
         {
            button1.Enabled = false;
         }
         else
         {
            button1.Enabled = true;
         }

}

// Moves the checked items from the CheckedListBox to the listBox.
      private void button2_Click(object sender, System.EventArgs e)
      {
         listBox1.Items.Clear();
         button3.Enabled=false;
         for (int i=0; i< checkedListBox1.CheckedItems.Count;i++)
         {
            listBox1.Items.Add(checkedListBox1.CheckedItems[i]);
         }
         if (listBox1.Items.Count>0)
            button3.Enabled=true;

}
        // Activates the move button if there are checked items.
      private void checkedListBox1_ItemCheck(object sender, ItemCheckEventArgs e)
      {
         if(e.NewValue==CheckState.Unchecked)
         {
            if(checkedListBox1.CheckedItems.Count==1)
            {
               button2.Enabled = false;
            }
         }
         else
         {
            button2.Enabled = true;
         }
      }

// Saves the items to a file.
      private void button3_Click(object sender, System.EventArgs e)
      {  
         // Insert code to save a file.
         listBox1.Items.Clear();
         IEnumerator myEnumerator;
         myEnumerator = checkedListBox1.CheckedIndices.GetEnumerator();
         int y;
         while (myEnumerator.MoveNext() != false)
         {
            y =(int) myEnumerator.Current;
            checkedListBox1.SetItemChecked(y, false);
         }
         button3.Enabled = false ;
      }       
    }
}