C# CheckedListBox控件的用法
最近用到checklistbox控件,在使用其過程中,花了較多的時(shí)間,這里我收集了其相關(guān)的代碼段,希望對(duì)大家有所幫助。
1.
添加項(xiàng)
checkedListBox1.Items.Add("藍(lán)色");
checkedListBox1.Items.Add("紅色");
checkedListBox1.Items.Add("黃色");
?
2.
判斷第i項(xiàng)是否選中,選中為true,否則為false
if(checkedListBox1.GetItemChecked(i))
{
???? return true;
}
else
{
???? return false;
}
?
3.
設(shè)置第i項(xiàng)是否選中
checkedListBox1.SetItemChecked(i, true);? //true改為false為沒有選中。
?
4.
設(shè)置全選
添加一個(gè)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 ,并將選中的項(xiàng)的文本組合成為一個(gè)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(shè)置CheckedListBox中第i項(xiàng)的Checked狀態(tài)
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?yōu)镃hecked狀態(tài)
???????? for (int i = 0; i < checkedListBoxLayerControl.Items.Count;
?????????????????? i++)
???????? {????
checkedListBoxLayerControl.SetItemCheckState(i,
??????? CheckState.Checked);
}
}
else
{
???? //否則變成Unchecked狀態(tài)
??? for (int i = 0;
?i < checkedListBoxLayerControl.Items.Count; i++)
{
checkedListBoxLayerControl.SetItemCheckState(i, CheckState.Unchecked);
}?????????????
}
}
8.
checkedListBox 單選設(shè)置(代碼實(shí)現(xiàn))
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(gè)數(shù)據(jù)庫中關(guān)鍵字對(duì)應(yīng)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(xiàng)
for (int i = 0; i < checkedListBox1.Items.Count; i++)
{
??? checkedListBox1.Items.Clear();
}
?
12.
//設(shè)置索引為index的項(xiàng)為選中狀態(tài)
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(xiàng)
?
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(xiàng)被選中,
//則顯示checkedListBox1對(duì)應(yīng)的值
if (checkedListBox1.GetItemChecked(i))
{
???? MessageBox.Show(checkedListBox1.Items.ToString());
}
}
?
16.
//反向選擇checkedListBox1的選項(xiàng)
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(xiàng)->checkedListBox2
for (int i = 0; i < checkedListBox1.CheckedItems.Count; i++)
{
???? checkedListBox2.Items.Add(this.checkedListBox1.CheckedItems);
?
//remove是除去一個(gè)具體的值,不是index,注意了
???? this.checkedListBox1.Items.Remove(
???????? this.checkedListBox1.CheckedItems);??????
}
轉(zhuǎn)載于:https://www.cnblogs.com/x2048/articles/1794041.html
總結(jié)
以上是生活随笔為你收集整理的C# CheckedListBox控件的用法的全部內(nèi)容,希望文章能夠幫你解決所遇到的問題。
- 上一篇: Windows服务编写
- 下一篇: 短信猫常用AT指令