if (treeView1.SelectedNode.Name .Length == 4)
            {
                SqlConnection conn = new SqlConnection("server=.;database=人事管理;uid=sa;pwd=230415;");
                conn.Open();
                string yg_id;
                if (ds.Tables["ygbumen"] != null)
                    ds.Tables["ygbumen"].Clear();
                yg_id = "'" + treeView1.SelectedNode.Name + "'";
                SqlDataAdapter sda = new SqlDataAdapter("exec Get_ygbumenInfo  '" + yg_id + "'", conn);
                sda.Fill(ds, "ygbumen");
                this.dataGridView1.DataSource = sql.ds.Tables["ygbumen"].Rows[4]["ygbumen"].ToString();
            }
这个是我在treeview中写的数据传递代码，但运行后，选中那个子节点，信息不会在gridview中显示，什么地方错了呢

设个断点，看看你的代码有没有进入sda.Fill(ds, "ygbumen");

嗯，弄好了，在   yg_id = "'" + treeView1.SelectedNode.Name + "'";多了引号，我去掉就行了