private void buttonDelAttribute_Click(object sender, EventArgs e)
        {
            if (MessageBox.Show("确定要删除该属性字段?", "提示!", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
            {
                try
                {
                    GSOFeatureLayer pFeatureLayer = geoLayer as GSOFeatureLayer;
                    if (pFeatureLayer == null)
                    {
                        return;
                    }
                    GSOFeatureDataset dataset = pFeatureLayer.Dataset as GSOFeatureDataset;

                    dataset.DeleteField(listBoxAttribute.SelectedItem.ToString());

                    if (listBoxAttribute.SelectedItem != null)
                    {
                        listBoxAttribute.Items.Remove(listBoxAttribute.SelectedItem);
                        dataset.SaveAs(@"F:\新建文件夹");
                        MessageBox.Show("删除字段成功!", "提示!");
                    }
                    if (m_globeControl != null)
                    {
                        m_globeControl.Refresh();
                    }
                }
                catch (System.Exception exp)
                {
                    Log.PublishTxt(exp);
                }
            }
        }