/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ListboxCheckboxForm_Load(object sender, EventArgs e)
{
//设置CheckedListBox中第i项的Checked状态
DataTable dt = new DataTable();
dt.Columns.Add("id", typeof(Guid));
dt.Columns.Add("name", typeof(string));
dt.Rows.Add(Guid.NewGuid(), "geovindu");
dt.Rows.Add(Guid.NewGuid(), "duf");
dt.Rows.Add(Guid.NewGuid(), "涂聚文");
dt.Rows.Add(Guid.NewGuid(), "tujwen");
//checkedListBox1.Items.Add("");
//checkedListBox1.Items.Insert(0, "");
checkedListBox1.DataSource = dt;
checkedListBox1.DisplayMember = "name";
checkedListBox1.ValueMember = "id";
checkedListBox1.SetItemCheckState(1, CheckState.Checked);
}
/// <summary>
/// 獲取選擇的項
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button1_Click(object sender, EventArgs e)
{
//1
string checkedText = string.Empty;
for (int i = 0; i < this.checkedListBox1.CheckedItems.Count; i++)
{
this.checkedListBox1.SetSelected(i, true);
checkedText += (String.IsNullOrEmpty(checkedText) ? "" : ",") + this.checkedListBox1.GetItemText(this.checkedListBox1.Items[i]) + "[" +this.checkedListBox1.SelectedValue.ToString()+"]";
}
MessageBox.Show(checkedText);
//2
for (int i = 0; i < checkedListBox1.Items.Count; i++)
{
//如果checkedListBox1的第i项被选中，
//则显示checkedListBox1对应的值
if (checkedListBox1.GetItemChecked(i))
{
// MessageBox.Show(checkedListBox1.GetItemText(checkedListBox1.Items[i]) + "[" + this.checkedListBox1.SelectedValue.ToString()+"]");
}
}
//3
string strCollected = string.Empty;
for (int i = 0; i < checkedListBox1.Items.Count; i++)
{
if (checkedListBox1.GetItemChecked(i))
{
if (strCollected == string.Empty)
{
strCollected = checkedListBox1.GetItemText(checkedListBox1.Items[i]);
}
else
{
strCollected = strCollected + "/" + checkedListBox1.GetItemText(checkedListBox1.Items[i]);
}
}
}
//MessageBox.Show(strCollected);
}
/// <summary>
/// 設定是否全選
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void select_all_CheckedChanged(object sender, EventArgs e)
{
if (select_all.Checked)
{
for (int j = 0; j < checkedListBox1.Items.Count; j++)
checkedListBox1.SetItemChecked(j, true);
}
else
{
for (int j = 0; j < checkedListBox1.Items.Count; j++)
checkedListBox1.SetItemChecked(j, false);
}
}
/// <summary>
/// 獲取選擇的項
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button2_Click(object sender, EventArgs e)
{
string checkedText = string.Empty;
for (int i = 0; i < this.checkedListBox1.Items.Count; i++)
{
if (this.checkedListBox1.GetItemChecked(i))
{
this.checkedListBox1.SetSelected(i, true);
checkedText += (String.IsNullOrEmpty(checkedText) ? "" : ",") +"["+this.checkedListBox1.SelectedValue.ToString()+"]" + this.checkedListBox1.GetItemText(checkedListBox1.Items[i]);
}
}
MessageBox.Show(checkedText);
}
/// <summary>
/// 設置選擇項
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button3_Click(object sender, EventArgs e)
{
checkedListBox1.DataSource = null;
DataTable dt = new DataTable();
dt.Columns.Add("id", typeof(Guid));
dt.Columns.Add("name", typeof(string));
dt.Columns.Add("check", typeof(bool));
dt.Rows.Add(Guid.NewGuid(), "geovindu",false);
dt.Rows.Add(Guid.NewGuid(), "duf",true);
dt.Rows.Add(Guid.NewGuid(), "涂聚文",false);
dt.Rows.Add(Guid.NewGuid(), "tujwen",true);
checkedListBox1.DataSource = dt;
checkedListBox1.DisplayMember = "name";
checkedListBox1.ValueMember = "id";
//
for (int i = 0; i < dt.Rows.Count; i++)
{
checkedListBox1.SetItemChecked(i, (bool)dt.Rows[i]["check"]);
}
}
