private void btPaste_Click(object sender, EventArgs e)
{
if (Clipboard.ContainsData("MathNode"))
{
object data = Clipboard.GetData("MathNode");
if (data != null)
{
string s = data.ToString();
XmlDocument doc = new XmlDocument();
doc.LoadXml(s);
if (doc.DocumentElement != null)
{
try
{
Type t = XmlUtil.GetLibTypeAttribute(doc.DocumentElement);
MathNode node = mathExpCtrl1.AddMathNode(t);
node.Load(doc.DocumentElement);
mathExpCtrl1.RefreshVariableMap();
mathExpCtrl1.Refresh();
mathExpCtrl1.Focus();
}
catch (Exception err)
{
MessageBox.Show(err.Message);
}
}
}
}
}