checklistbox控件
1.添加項
checkedListBox1.Items.Add("藍色");
checkedListBox1.Items.Add("紅色");
checkedListBox1.Items.Add("黃色");
2. 判斷第i項是否選中,選中為true,否則為false
if（checkedListBox1.GetItemChecked(i)）
{
return true;
}
else
{
return false;
}
3. 設置第i項是否選中
checkedListBox1.SetItemChecked(i, true); //true改為false為沒有選中。
4. 設置全選
添加一個名為select_all的checkbox控件，由其控制checkedListBox是全選還是全不選。
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);
}
}
5.得到全部選中的值 ，並將選中的項的文本組合成為一個字符串。
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]);
}
}
}
6.設置CheckedListBox中第i項的Checked狀態
checkedListBox1.SetItemCheckState(i, CheckState.Checked);
7.
private void checkBoxAll_CheckedChanged(object sender, EventArgs e)
{
if (checkBoxAll.Checked)
{
//被選擇了則將CheckedListBox中的所有條目都變為Checked狀態
for (int i = 0; i < checkedListBoxLayerControl.Items.Count;
i++)
{
checkedListBoxLayerControl.SetItemCheckState(i,
CheckState.Checked);
}
}
else
{
//否則變成Unchecked狀態
for (int i = 0;
i < checkedListBoxLayerControl.Items.Count; i++)
{
checkedListBoxLayerControl.SetItemCheckState(i, CheckState.Unchecked);
}
}
}
8. checkedListBox 單選設置(代碼實現)
private void chkl_ItemAuditing_ItemCheck(object sender,
ItemCheckEventArgs e)
{
if (chkl_ItemAuditing.CheckedItems.Count > 0)
{
for (int i = 0; i < chkl_ItemAuditing.Items.Count; i++)
{
if (i != e.Index)
{
this.chkl_ItemAuditing.SetItemCheckState(i,
System.Windows.Forms.CheckState.Unchecked);
}
}
}
}
9. checkedListBox1顯示一個數據庫中關鍵字對應的所有記錄
for (int i = 0; i < table.Rows.Count; i++)
{
string name = table.Rows["myname"].ToString();
string paw = table.Rows["mypaw"].ToString();
checkedListBox1.Items.Add(name + paw);
}
10.
for(i=0;i<CheckedListBox.Items.Count;i++)
{
if(CheckedListBox.GetItemText(
CheckedListBox.Items)=="你得到的值")
{
CheckedListBox.SetItemChecked(i,true);
}
}
11. 清除checkedListBox1中所有的選項
for (int i = 0; i < checkedListBox1.Items.Count; i++)
{
checkedListBox1.Items.Clear();
}
12. //設置索引為index的項為選中狀態
for (int i = 0; i < checkedListBox1.Items.Count; i++)
{
checkedListBox1.SetItemChecked(i, true);
}
13.
for (int i = 0; i < checkedListBox1.Items.Count; i++)
{
if (checkedListBox1.GetSelected(i))
{
MessageBox.Show(checkedListBox1.CheckedItems.ToString());
}
}
14.//選中checkedListBox1所有的選項
for (int i = 0; i < checkedListBox1.Items.Count; i++)
{
checkedListBox1.SetItemCheckState(i, CheckState.Checked);
}
15.
for (int i = 0; i < checkedListBox1.Items.Count; i++)
{
//如果checkedListBox1的第i項被選中，
//則顯示checkedListBox1對應的值
if (checkedListBox1.GetItemChecked(i))
{
MessageBox.Show(checkedListBox1.Items.ToString());
}
}
16. //反向選擇checkedListBox1的選項
for (int i = 0; i < checkedListBox1.Items.Count; i++)
{
if (checkedListBox1.GetItemChecked(i))
{
checkedListBox1.SetItemChecked(i, false);
}
else
{
checkedListBox1.SetItemChecked(i, true);
}
}
17. //checkedListBox1中選定的項->checkedListBox2
for (int i = 0; i < checkedListBox1.CheckedItems.Count; i++)
{
checkedListBox2.Items.Add(this.checkedListBox1.CheckedItems);
//remove是除去一個具體的值，不是index，注意了
this.checkedListBox1.Items.Remove(
this.checkedListBox1.CheckedItems);
}
