private void professionTreeView_AfterSelect(object sender, TreeViewEventArgs e)
{
TreeNode pnode = professionTreeView.SelectedNode;
if (pnode.Text != "专业")
{
dataGridView1.DataSource = StudentInfoBLL.GetStudentInfoListByProfession(pnode.Text);
}
else
{
dataGridView1.DataSource = StudentInfoBLL.GetAllStudentInfo();
}
}