树视图

 

public partial class ProductList : Form
    ...{
        public ProductList()
        ...{
            InitializeComponent();
        }

        PageBar pb = new PageBar();
        string[] ColumnValue =...{ "prdclass", "prdname" };
        DataSet ds = XZD_Product.GetAllProductClass();

        private void ProductList_Load(object sender, EventArgs e)
        ...{
            TreeNodeCollection tnc;
            int NodeIndex=0;//第几个菜单
            int step=0;//菜单级别
            int j;
            
            if (ds.Tables[0].Rows.Count > 0)
            ...{
                tnc=treeView1.Nodes; 
                tnc.Add(ds.Tables[0].Rows[0]["prdclass"].ToString(), ds.Tables[0].Rows[0]["prdname"].ToString());
                ds.Tables[0].Rows[0]["prdname"] = step;//
                for (int i = 1; i < ds.Tables[0].Rows.Count; i++)
                ...{
                    //兄弟节点
                    if (ds.Tables[0].Rows[i]["prdclass"].ToString().Length == ds.Tables[0].Rows[i-1]["prdclass"].ToString().Length)
                    ...{
                        tnc.Add(ds.Tables[0].Rows[i]["prdclass"].ToString(), ds.Tables[0].Rows[i]["prdname"].ToString());
                        ds.Tables[0].Rows[i]["prdname"] = step;//
                        NodeIndex++;
                    }
                    //子节点
                    else if (ds.Tables[0].Rows[i]["prdclass"].ToString().Length > ds.Tables[0].Rows[i - 1]["prdclass"].ToString().Length)
                    ...{
                        step = step + 1;
                        tnc = tnc[NodeIndex].Nodes;
                        tnc.Add(ds.Tables[0].Rows[i]["prdclass"].ToString(), ds.Tables[0].Rows[i]["prdname"].ToString());
                        ds.Tables[0].Rows[i]["prdname"] = step;//
                        NodeIndex = 0;
                    }
                    //既非兄弟节点，也不是子节点
                    else
                    ...{
                        for (j = i-1; j > 0; j--)
                        ...{
                            if (ds.Tables[0].Rows[j]["prdclass"].ToString().Length < ds.Tables[0].Rows[i]["prdclass"].ToString().Length)
                            ...{
                                if (ds.Tables[0].Rows[i]["prdclass"].ToString().Substring(0,ds.Tables[0].Rows[j]["prdclass"].ToString().Length).Equals(ds.Tables[0].Rows[j]["prdclass"].ToString()))
                                ...{
                                    int k = int.Parse(ds.Tables[0].Rows[j]["prdname"].ToString());
                                    //int k = 1;
                                    step = k + 1;
                                    tnc = treeView1.Nodes;
                                    for (; k >= 0; k--)
                                    ...{
                                        tnc = tnc[tnc.Count-1].Nodes;
                                    }     
                                    tnc.Add(ds.Tables[0].Rows[i]["prdclass"].ToString(), ds.Tables[0].Rows[i]["prdname"].ToString());
                                    ds.Tables[0].Rows[i]["prdname"] = step;
                                    NodeIndex = tnc.Count-1;
                                    break;//找到父节点，退出循环
                                }
                            }
                        }
                        //未找到父节点，说明是0级菜单
                        if (j == 0)
                        ...{
                            tnc = treeView1.Nodes;
                            step = 0;
                            tnc.Add(ds.Tables[0].Rows[i]["prdclass"].ToString(), ds.Tables[0].Rows[i]["prdname"].ToString());
                            ds.Tables[0].Rows[i]["prdname"] = step;
                            NodeIndex = tnc.Count - 1;
                        }
                    }
                }
            }
            //分页处理
            pb.SetColumn(ColumnValue);
            c1FlexGrid1.DataSource = pb.GetFirstPageDataSource(ds);
            c1FlexGrid1.Cols["prdclass"].Width = 100;
            c1FlexGrid1.Cols["prdclass"].Caption = "产品编号";
            c1FlexGrid1.Cols["prdname"].Width = 220;
            c1FlexGrid1.Cols["prdname"].Caption = "产品名称";
        }

        private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        ...{
            //treeView1.
            string  name = treeView1.SelectedNode.Name;

            ds = XZD_Product.GetSpecilProductClass(name);

            //分页处理
            pb.SetColumn(ColumnValue);
            c1FlexGrid1.DataSource = pb.GetFirstPageDataSource(ds);
            c1FlexGrid1.Cols["prdclass"].Width = 100;
            c1FlexGrid1.Cols["prdclass"].Caption = "产品编号";
            c1FlexGrid1.Cols["prdname"].Width = 220;
            c1FlexGrid1.Cols["prdname"].Caption = "产品名称";
        }