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private void treeView1_MouseDown(object sender, MouseEventArgs e)
{
Point sPoint = new Point(e.X, e.Y);
if (e.Button == MouseButtons.Right)
{
TreeNode node = this.treeView1.GetNodeAt(e.X, e.Y);
if (treeView1.Nodes.IndexOf(node) != -1)
{
this.treeView1.SelectedNode = node;
treeView1.ContextMenuStrip = this.contextMenuStrip1;
}
else
{
treeView1.ContextMenu = null;
}
}
else
{
treeView1.ContextMenu = null;
}
}