Copy TabControl Tab

问题

I searched the internet for this but i couldn't find how to do it with C#

What i am trying to do is make it so that when i click on my NewTab button, a new tab appears with the same controls that were on the first tab. I saw some information on how to add a UserControl to your form, but C# doesn't have anything like that.

And for everyone who would say "Post your code", i don't have any, so don't bother saying that, the only code i have is the code for the program and that wouldn't help anyone.

回答1:

EDIT

I have rewritten my solution to use reflection.

using System.Reflection;

// your TabControl will be defined in your designer
TabControl tc;
// as will your original TabPage
TabPage tpOld = tc.SelectedTab;

TabPage tpNew = new TabPage();
foreach(Control c in tpOld.Controls)
{
    Control cNew = (Control) Activator.CreateInstance(c.GetType());

    PropertyDescriptorCollection pdc = TypeDescriptor.GetProperties(c);

    foreach (PropertyDescriptor entry in pdc)
    {
        object val = entry.GetValue(c);
        entry.SetValue(cNew, val);
    }

    // add control to new TabPage
    tpNew.Controls.Add(cNew);
}

tc.TabPages.Add(tpNew);

Some information can be found here. http://www.codeproject.com/Articles/12976/How-to-Clone-Serialize-Copy-Paste-a-Windows-Forms

回答2:

Your best bet would be to look at this article:

Code Project

Then apply the following code to add the cloned control (this would be in your button click handler code (based on article):

    private void button1_Click(object sender, EventArgs e)
    {
        // create new tab
        TabPage tp = new TabPage();

        // iterate through each control and clone it
        foreach (Control c in this.tabControl1.TabPages[0].Controls)
        {
            // clone control (this references the code project download ControlFactory.cs)
            Control ctrl = CtrlCloneTst.ControlFactory.CloneCtrl(c);
            // now add it to the new tab
            tp.Controls.Add(ctrl);
            // set bounds to size and position
            ctrl.SetBounds(c.Bounds.X, c.Bounds.Y, c.Bounds.Width, c.Bounds.Height);
        }

        // now add tab page
        this.tabControl1.TabPages.Add(tp);
    }

Then you would need to hook the event handlers up. Will have to think about this.

回答3:

I know it's an old thread but I just figured out a way for myself and thought I should share it. It's really simple and tested in .Net 4.6.

Please note that this solution does not actually create new controls, just re-assigns them all to new TabPage, so you have to use AddRange each time you change tabs. New tab will show the exact same controls, content and values included.

// Create an array and copy controls from first tab to it.
Array tabLayout = new Control [numberOfControls];
YourTabControl.TabPages[0].Controls.CopyTo(tabLayout, 0);

// AddRange each time you change a tab.
YourTabControl.TabPages[newTabIndex].Controls.AddRange((Control[])tabLayout);

来源：https://stackoverflow.com/questions/14507173/copy-tabcontrol-tab