checkedListBox1 问题.....

绑定： checkedListBox1.DisplayMember = "Name";
checkedListBox1.ValueMember = "ID";
checkedListBox1.DataSource = dt;
获取选中ID：
private void checkedListBox1_SelectedIndexChanged(object sender, System.EventArgs e)
{
MessageBox.Show(checkedListBox1.SelectedValue.ToString());
}

checkedListBox1.DataSource=ds.Tables[0];
checkedListBox1.ValueMember="intSectionID";
checkedListBox1.DisplayMember="txtShortDesc".ToString(); for (int i = 0;i<chlSections.CheckedItems.Count;i++)
{
aa+=chlSections.CheckedItems[i].ToStrin()+";";
}

绑定:
checkedListBox1.DataSource=ds.Tables[0];
checkedListBox1.DataValueField = "id";
checkedListBox1.DataTextField = "Name";
checkedListBox1.DataBind();
得到选中名字的ID如楼上所说..

刚才写的有点错误，更新：：checkedListBox1.DataSource=ds.Tables[0];
checkedListBox1.ValueMember="intSectionID";
checkedListBox1.DisplayMember="txtShortDesc".ToString();for (int i = 0;i<checkedListBox1.CheckedItems.Count;i++)
{
DataRowView dv = ((System.Data.DataRowView)checkedListBox1.CheckedItems[i]);
aa+=dv["字段"].ToString()+";"
}

CheckBoxList1.DataSource = dt;
CheckBoxList1.DataTextField = "name";
CheckBoxList1.DataValueField = "id";
CheckBoxList1.DataBind();

没有说错，的确是在WinForm下，也许你会说IDE的提示里面没有，不过我测试过，的确可以这样使用，而且我贴出的代码就是我测试的代码。CheckedListBox 是从ListControl派生而来的。DisplayMember ValueMember 这两个成员自然也就继承下来了，IDE中的智能提示没有，我只能认为是一个bug，如果你看到《Windows Form程序设计》一书，里面也提到了IDE存在的另一个bug，你就不会奇怪了。

checkedListBox1 没有这个DataSource属性啊。。

checkedListBox1.DataSource=ds.Tables[0];
checkedListBox1.DataValueField = "id";
checkedListBox1.DataTextField = "Name";
checkedListBox1.DataBind();
for (int i = 0;i<checkedListBox1.CheckedItems.Count;i++)
{
aa+=checkedListBox1.CheckedItems[i].ToStrin()+";";
}

第一步：
public Form1()
{
  ……………
  this.checkedListBox1.SetItemCheckState (0, System.Windows.Forms.CheckState.Indeterminate);//设置第一个item(索引是0)的状态为“不确定”
}第二步：
private void checkedListBox1_ItemCheck(object sender, ItemCheckEventArgs e)
{
   if (e.CurrentValue == CheckState.Indeterminate)//如果对像的当前状态为“不确定”，则设置对象的新状态为“不确定”
   {
       e.NewValue = CheckState.Indeterminate;
   }
……………
}第三步：
在你要对items进行操作时，用个if语句，选择item的状态为非“不确定”的进行操作，这样，对状态为“不确定”的item的操作就被屏蔽掉了。回答完毕。
一个完整的示例程序：using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;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.Windows.Forms.Button button4;
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.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.button4 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(173, 69);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(153, 21);
this.textBox1.TabIndex = 1;
this.textBox1.Text = "";
this.textBox1.TextChanged += new System.EventHandler(this.textBox1_TextChanged);
//
// checkedListBox1
//
this.checkedListBox1.Location = new System.Drawing.Point(19, 69);
this.checkedListBox1.Name = "checkedListBox1";
this.checkedListBox1.Size = new System.Drawing.Size(144, 180);
this.checkedListBox1.TabIndex = 0;
this.checkedListBox1.ThreeDCheckBoxes = true;
this.checkedListBox1.ItemCheck += new System.Windows.Forms.ItemCheckEventHandler(this.checkedListBox1_ItemCheck);
//
// listBox1
//
this.listBox1.ItemHeight = 12;
this.listBox1.Location = new System.Drawing.Point(490, 69);
this.listBox1.Name = "listBox1";
this.listBox1.Size = new System.Drawing.Size(153, 196);
this.listBox1.TabIndex = 3;
//
// button1
//
this.button1.Enabled = false;
this.button1.Location = new System.Drawing.Point(173, 112);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(125, 34);
this.button1.TabIndex = 2;
this.button1.Text = "Add Fruit";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Enabled = false;
this.button2.Location = new System.Drawing.Point(346, 69);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(124, 34);
this.button2.TabIndex = 2;
this.button2.Text = "Show Order";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.Enabled = false;
this.button3.Location = new System.Drawing.Point(346, 112);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(124, 34);
this.button3.TabIndex = 2;
this.button3.Text = "Save Order";
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// button4
//
this.button4.Location = new System.Drawing.Point(200, 184);
this.button4.Name = "button4";
this.button4.TabIndex = 4;
this.button4.Text = "button4";
this.button4.Click += new System.EventHandler(this.button4_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(675, 294);
this.Controls.Add(this.button4);
this.Controls.Add(this.listBox1);
this.Controls.Add(this.button3);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.textBox1);
this.Controls.Add(this.checkedListBox1);
this.Name = "Form1";
this.Text = "Fruit Order";
this.ResumeLayout(false); } [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++)
{
if (this.checkedListBox1.GetItemCheckState(i) != System.Windows.Forms.CheckState.Indeterminate)
{
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.CurrentValue == CheckState.Indeterminate)
{
e.NewValue = CheckState.Indeterminate;
}
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 ;
} private void button4_Click(object sender, System.EventArgs e)
{
this.checkedListBox1.SetItemCheckState (0, System.Windows.Forms.CheckState.Indeterminate);
}
}
}这里是加了个button4的按钮。

绑定数据的用for 循环取值　然后　用Items.Add();
实现了　不过不太厚道　只是刚刚实现功能而已

调试易

checkedListBox1 问题.....

解决方案 »