在TabControl控件中並沒提供單個選項卡的Click事件,今天下午翻了翻MSDN 結果還是沒找到相關的文檔:( 看來只有自個兒折騰了...
還好有個SelectedIndexChanged事件爲我所用:)
以下是代碼片段:
private void tabControl1_SelectedIndexChanged(object sender, System.EventArgs e)
{
switch(this.tabControl1.SelectedIndex)
{
case 0:
MessageBox.Show("tabPage1 is Selected");
break;
case 1:
MessageBox.Show("tabPage2 is Selected");
break;
}
}
在 WinForm開 發的過程中,MDI是一種常見的形式。在MDI主窗體打開的子窗體處於活動狀態的只有一個,很多時候我們需要在打開的MDI子窗 體中切換。然而.Net的框架並沒有提供一種易見的切換方式,當然可以通過“Ctrl+Tab”來切換,但是這種方式是不易見的,並且只能按照打開窗體的 順序來切換。
下面來介紹一種結合了TabCotrol控件的軟件設計形式。
這種設計形式要解決三個問題:
(1)TabControl的TabPage要和窗體對應
(2)TabControl的TabPage切換的時候,對應的窗體要激活
(3)窗體的新建或關閉,對應的TabPage要創建或撤銷
下面就來一步步的解決這些問題
首先拖一個TabControl控件到MDI主窗口中,設置其DOCK爲Bottom或者TOP,根據需要也可以設置到左或右。設置其Height爲0。主窗體添加如下代碼:
//切換TabPage,將對應的窗體激活
private void tabControl_SelectedIndexChanged(object sender, EventArgs e)
{
if (this.MdiChildren.Length > 0)
{
for (int i = 0; i < this.MdiChildren.Length; i++)
{
if (this.tabControl.SelectedIndex == i)
{
this.MdiChildren[i].Activate();
return;
}
}
}
}
or
//切換TabPage,將對應的窗體激活
private void tabControl_SelectedIndexChanged(object sender, EventArgs e)
{
this.ChangeTabPage();
}
//子窗體切換激活
private void ChangeTabPage()
{
if (this.MdiChildren.Length > 0 && tabControl.SelectedIndex > -1)
{
for (int i = 0; i < this.MdiChildren.Length; i++)
{
if (this.tabControl.SelectedIndex == i)
{
this.MdiChildren[i].WindowState = FormWindowState.Maximized;
this.MdiChildren[i].Visible = true;
this.MdiChildren[i].Activate();
}
else if (this.MdiChildren[i].Visible == true)
{
this.MdiChildren[i].Visible = false;
}
}
}
}
//增加TabPage,將對應的窗體激活
private void tabControl_ControlAdded(object sender, ControlEventArgs e)
{
if (this.tabControl.SelectedIndex == 0)
this.ChangeTabPage();
}
//關閉TabPage,將對應的窗體關閉
private void tabControl_ControlRemoved(object sender, ControlEventArgs e)
{
//if (this.tabControl.SelectedIndex == 0)
//this.ChangeTabPage();
}
//窗體關閉的時候,撤銷對應的TabPage
public void RemoveTabPage(TabPage tb)
{
this.MultiPageControl.TabPages.Remove(tb);
if (this.tabControl.TabPages.Count == 0)
{
this.TabControlSize = new Size(this.TabControlSize.Width, 0);
}
}
//窗體創建的時候,創建對應的TabPage
public void AddTabPage(TabPage tb)
{
if (this.tabControl.TabPages.Count == 0)
{
this.TabControlSize = new Size(this.TabControlSize.Width, 20);
}
this.MultiPageControl.TabPages.Add(tb);
this.MultiPageControl.SelectedTab = tb;
}
//獲取TabControl控件,以便子窗體調用(只讀)
public TabControl MultiPageControl
{
get
{
return this.tabControl;
}
}
//獲取TabControl控件的Size屬性,以便子窗體調用
public Size TabControlSize
{
get
{
return this.tabControl.Size;
}
set
{
this.tabControl.Size = value;
}
}
對應子窗體,每個窗體打開的時候,主窗體都需要創建一個TabPage,關閉的時候,都要撤銷一個TabPage,也就是說所有的子窗體都有共同的屬性和功能,所以我設置了一個父窗體來實現這些功能,子窗體通過繼承而擁有這些功能。
private frmMain frMain = null;
private TabPage tabPage = new TabPage();
private void frmTabMain_ParentChanged(object sender, EventArgs e)
{
if (this.MdiParent != null)
{
this.tabPage.Text = this.Text + " ";
frMain = this.MdiParent as frmMain;//獲取主窗體
frMain.AddTabPage(tabPage);//調用主窗體方法,創建一個TabPage
}
}
//窗體被激活,對應的TabPage也呈選中狀態
private void frmTabMain_Enter(object sender, EventArgs e)
{
if (this.frMain != null)
{
for (int i = 0; i < this.frMain.MdiChildren.Length; i++)
{
if (this.frMain.MdiChildren[i] == this)
{
this.frMain.MultiPageControl.SelectedIndex = i;
}
}
}
}
//窗體關閉,調用主窗體方法,撤銷對應TabPage
private void frmTabTitleMain_FormClosed(object sender, FormClosedEventArgs e)
{
this.Dispose();
this.frMain.RemoveTabPage(tabPage);
}
//窗體加載的時候,將窗體的標題賦給對應的TabPage
private void frmTabMain_Load(object sender, EventArgs e)
{
// this.tabPage.Text = this.Text;
}
--------------------------------------------------------------------------------------------------------------
本頁面實現功能爲:點擊左側邊欄的菜單 頁面部分TabControl自動添加所對應的頁面
/// </summary>
/// <param name="MainTabControlKey">選項卡的鍵值</param>
/// <param name="objTabControl">要添加到的TabControl對象</param>
/// <returns></returns>
private Boolean ErgodicModiForm(string MainTabControlKey, TabControl objTabControl)
{
//遍歷選項卡判斷是否存在該子窗體
foreach (Control con in objTabControl.Controls)
{
tbPage = (TabPage)con;
if (tbPage.Name == MainTabControlKey)
{
return false;//存在
}
}
return true;//不存在
}
private TabPage tbPage = null;
/// <summary>
/// 添加選項卡頁面顯示窗體信息
/// </summary>
/// <param name="id">選項卡id</param>
/// <param name="name">選項卡名稱</param>
/// <param name="newForm">所要加載的窗體</param>
private void AddTab(string id, string name, Form newForm)
{
if (ErgodicModiForm(id, tbcMain))
{
tbPage = new TabPage();
tbPage.Name = id;
tbPage.Text = name;
tbcMain.TabPages.Add(tbPage);
tbcMain.BackColor = Color.FromName("#3775B2");
//newForm.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right |
AnchorStyles.Bottom;
newForm.Dock = DockStyle.Fill;
newForm.BackColor = ColorTranslator.FromHtml("#e3f1fe");
newForm.FormBorderStyle = FormBorderStyle.None;
newForm.TopLevel = false;
//添加右鍵菜單
contextMenu = new ContextMenuStrip(this.components);
//contextMenu.TopLevel = false;
contextMenu.Items.Add("關閉窗口");
//this.Controls.Add(contextMenu);
contextMenu.Items[0].Click += new System.EventHandler(this.contextMenuItem_Click);
newForm.Show();
tbPage.Controls.Add(newForm);
newForm.ContextMenuStrip = contextMenu; //指定窗體的右鍵菜單
}
tbcMain.SelectedTabPage = tbPage;
}
/// <summary>
/// 右鍵菜單單擊關閉窗體,關閉當前選項卡頁面
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void contextMenuItem_Click(object sender, EventArgs e)
{
foreach (Control i in this.tbcMain.SelectedTab.Controls)
{
if (i.GetType() == typeof(Form))
{
Form form = (Form)i;
form.Close();
}
}
this.tbcMain.TabPages.RemoveAt(this.tbcMain.SelectedIndex);
}
/// <summary>
/// 點擊操作員管理菜單,加載操作員管理頁面
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tsmiOperManage_Click(object sender, EventArgs e)
{
User_Mange userMange=new User_Mange();
AddTab("OperManage","操作員管理",userMange);
}