//点击添加其他文件（pdf,ppt,word）
private void addDocument_Click(object sender, EventArgs e)
{
OpenFileDialog od1 = new OpenFileDialog();
od1.InitialDirectory = "c:\\";
od1.Filter = GetFile.DocumentFilter;
od1.FilterIndex = 2;
od1.RestoreDirectory = true;
if (od1.ShowDialog() == DialogResult.OK)
{
Path = od1.FileName;
MessageBox.Show("已选择文件:" + Path, "选择文件提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
service.AddDocument(Path, ListID);
videos = service.GetFileFromList(ListID);
ListViewUpdate(videos);
ListViewUpdate(ListID);
listBox1.SelectedIndex = 0;
}