private void CreateChild()
{
VehiclesForm vehiclesForm = new VehiclesForm(document);
vehiclesForm.MdiParent = this;
vehiclesForm.Show();
openedForms.Add(vehiclesForm);
}
private void MainForm_MdiChildActivate(object sender, EventArgs e)
{
ToolStripManager.RevertMerge(toolStrip);
VehiclesForm frmChild = (VehiclesForm)ActiveMdiChild;
if (frmChild != null)
{
ToolStripManager.Merge(frmChild.toolStrip1, toolStrip);
}
}