The ToolStripMain class implements the usual Cut, Copy, and Paste clipboard commands.

All clipboard commands are deferred to the C1Editor itself:

To write code in C#

void Cut_Click(object sender, EventArgs e)
{
    Editor.Cut();
}
void Copy_Click(object sender, EventArgs e)
{
    Editor.Copy();
}
void Paste_Click(object sender, EventArgs e)
{
    Editor.PasteAsText(); //.Paste();
}

The C1Editor clipboard commands are simple and easy to use, like the ones in the regular TextBox and RichTextBox controls.

Notice that the Paste command is implemented with a call to the PasteAsText command. This ensures that the text being pasted is not interpreted as XHTML.