How to Copy Data to Clipboard in C#

How to copy data to clipboard in C#

There are two classes that lives in different assemblies and different namespaces.

• WinForms: use following namespace declaration, make sure Main is marked with [STAThread] attribute:

  using System.Windows.Forms;
  

• WPF: use following namespace declaration

  using System.Windows;
  

• console: add reference to System.Windows.Forms, use following namespace declaration, make sure Main is marked with [STAThread] attribute. Step-by-step guide in another answer

  using System.Windows.Forms;
  

To copy an exact string (literal in this case):

Clipboard.SetText("Hello, clipboard");

To copy the contents of a textbox either use TextBox.Copy() or get text first and then set clipboard value:

Clipboard.SetText(txtClipboard.Text);

See here for an example.
Or... Official MSDN documentation or Here for WPF.

---

Remarks:

• Clipboard is desktop UI concept, trying to set it in server side code like ASP.Net will only set value on the server and has no impact on what user can see in they browser. While linked answer lets one to run Clipboard access code server side with SetApartmentState it is unlikely what you want to achieve.

• If after following information in this question code still gets an exception see "Current thread must be set to single thread apartment (STA)" error in copy string to clipboard

• This question/answer covers regular .NET, for .NET Core see - .Net Core - copy to clipboard?

How to copy data in a text file to the clipboard?

if you want to copy the content of a text file to Clipboard the use the following code:

Clipboard.SetText(File.ReadAllText("your file path"));

(Original answer, before question edit: If you want to copy the content of a notepad to Clipboard, then just select the text and press ctrl+c. it will copy the text to the Clipboard.)

How do I copy the contents of a String to the clipboard in C#?

You can use System.Windows.Forms.Clipboard.SetText(...).

How to copy data to clipboard when user selects Copy from ContextMenu

I guess what I'd do is this:

var hitTestInfo = dataGridView1.HitTest(e.X, e.Y);
if (hitTestInfo.Type != DataGridViewHitTestType.Cell) { return; }

var mi = new MenuItem("Copy")
mi.Tag = hitTestInfo;
mi.Click += (s, e) =>
{
    var hti = ((MenuItem)s).Tag as HitTestInfo;
    var val = dataGridView1.Rows[hti.RowIndex].Cells[hti.ColumnIndex].Value;

    Clipboard.SetData(DataFormats.Text, val);
}

m.MenuItems.Add(mi);

How to copy multiple items to clipboard history in c#?

It takes some delays for Clipboard history to save the current item. Therefore, you could try to add a delay when an item is added.

Please check the following code as a sample:

private async void Button_Click(object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
    if(Clipboard.IsHistoryEnabled())
    {
        List<string> lists=new List<string>{ "1","2","3","4","5","6","7","8","9","10"}; 
        foreach(var item in lists)
        {
            DataPackage dataPackage = new DataPackage();
            dataPackage.SetText(item);
            Clipboard.SetContent(dataPackage);
            await Task.Delay(250);
        }
    }
}

Note, if these items are not all added, you could increase the delay time.

---

Related Topics