public partial class mainForm1 : Form
{
public delegate void getTab(string s);
public event getTab getTabcontrol;
public mainForm1()
{
InitializeComponent();
}
//第一个按钮点击事件
private void btn_1_Click(object sender, EventArgs e)
{
//将midum_left里的控件清空
this.midum_left.Controls.Clear();
//调用rightNavigation.class实例化LISTVIEW
leftNavigation navigation = new leftNavigation();
//实例化员工LISTVIEW
ListView imgView = (ListView)navigation.initLeftView("empManager");
imgView.Parent = midum_left;
midum_left.Visible = true;
this.midum_left.Controls.Add(imgView);
//默认tabpage为管理员工窗体
rightTabControl rightTab = new rightTabControl();
TabControl tabcon= rightTab.tabCon();
tabcon.Name = "TAB";
this.Controls.Add(tabcon);
getTabcontrol("dfa");
}
}
{
public delegate void getTab(string s);
public event getTab getTabcontrol;
public mainForm1()
{
InitializeComponent();
}
//第一个按钮点击事件
private void btn_1_Click(object sender, EventArgs e)
{
//将midum_left里的控件清空
this.midum_left.Controls.Clear();
//调用rightNavigation.class实例化LISTVIEW
leftNavigation navigation = new leftNavigation();
//实例化员工LISTVIEW
ListView imgView = (ListView)navigation.initLeftView("empManager");
imgView.Parent = midum_left;
midum_left.Visible = true;
this.midum_left.Controls.Add(imgView);
//默认tabpage为管理员工窗体
rightTabControl rightTab = new rightTabControl();
TabControl tabcon= rightTab.tabCon();
tabcon.Name = "TAB";
this.Controls.Add(tabcon);
getTabcontrol("dfa");
}
}
this.getTabcontrol += new getTab(WebForm4_getTabcontrol);
void WebForm4_getTabcontrol(string s)
{
//你应该这样处理
}如果你没有为它赋值,或者,别的地方没有为它赋值,就会出现你说的错误一般调用的时候建议写if( getTabcontrol!=null)
{ getTabcontrol("dfa");}