private void btnInventoryDensity_Click(object sender, EventArgs e)
 {
     InventoryDensity id = new InventoryDensity();
     id.DataXMLFilePath = DataXMLFilePathDensity;
     id.FillPath += id_FillPath;
     id.ShowDialog();
 }
 private void button11_Click(object sender, EventArgs e)
 {
     InventoryDensity id = new InventoryDensity();
     id.DataXMLFilePath = DataXMLFilePathDensity;
     id.ShowDialog();
 }