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今天根据任务做了从数据库中查询得到两个List,然后又通过List构造TreeView; 1 数据库中有两张表: 权限类型表:类型ID Function_TypeID <PK> 类型编码 Function_TypeCode 类型名称 Function_TypeName 类型的父ID Function_TypeParentID 权限信息表:权限ID Function_ID 权限编码:Function_Code 权限名称:Function_Name 权限类型ID: Function_TypeID 权限描述:Function_Describe 2要根据权限类型表中获得权限类型List构造权限类型树,在权限类型树的基础上再根据从权限信息表中获得的权限List构造权限节点:
MES.Business.UserPermission
{ public class SystemFunctionManager { public void FunctionTreeInit(TreeView toTreeView) { List<FunctionType> lstFunctionType = new FunctionTypeManager().GetAllFunctionType(); List<SystemFunction> lstFunction = GetAllSystemFunction(); FunctionTypeTreeInit(ref lstFunctionType, toTreeView);//构建权限类型树 FunctionNodeInit(ref lstFunction, toTreeView);//在权限类型树的基础上构建权限对象 } /// <summary> /// 实现对权限分类TreeView的初始化 /// </summary> /// <param name="lstFunctionType">获得的权限分类List</param> /// <param name="toTreeView">指定的一个目标TreeView</param> /// 作者;阮班波 /// 日期;2009-03-16 public void FunctionTypeTreeInit(ref List<FunctionType> lstFunctionType ,TreeView toTreeView) { toTreeView.Nodes.Clear(); TreeNode tmpNode = new TreeNode(); foreach(FunctionType objFunctionType in lstFunctionType) { if(objFunctionType.Function_TypeParentID == null) { TreeNode rootNode = new TreeNode (); rootNode.Name =objFunctionType.Function_TypeID.ToString(); rootNode.Text = objFunctionType.Function_TypeName; rootNode.Tag = objFunctionType.Function_TypeCode; toTreeView.Nodes.Add(rootNode); rootNode.Expand(); } else { tmpNode = null; for(int i = 0;i<toTreeView.Nodes.Count;i++) { TreeNode ttNode = new TreeNode(); ttNode = FindNode(toTreeView.Nodes[i], objFunctionType.Function_TypeParentID.ToString().Trim()); if(ttNode!=null) tmpNode = ttNode; } if(tmpNode!=null) { TreeNode subNode = new TreeNode(); subNode.Text = objFunctionType.Function_TypeName; subNode.Name = objFunctionType.Function_TypeID.ToString(); subNode.Tag = objFunctionType.Function_TypeCode; tmpNode.Nodes.Add(subNode); subNode.Expand(); } } } } /// <summary> /// 在指定的TreeView上增加权限节点 /// </summary> /// <param name="lstFunction">权限对象列表</param> /// <param name="toTreeView">指定的一个目标TreeView</param> private void FunctionNodeInit(ref List<SystemFunction> lstFunction,TreeView toTreeView) { TreeNode tmpNode = new TreeNode(); foreach(SystemFunction objSystemFunction in lstFunction) { tmpNode = null; for(int i = 0;i<toTreeView.Nodes.Count;i++) { TreeNode ttNode = new TreeNode(); ttNode = FindNode(toTreeView.Nodes[i],objSystemFunction.Function_TypeID.ToString().Trim()); if (ttNode != null) tmpNode = ttNode; } if (tmpNode != null) { TreeNode subNode = new TreeNode(); subNode.Name = objSystemFunction.FunctionCode; subNode.Text = objSystemFunction.FunctionName; tmpNode.Nodes.Add(subNode); subNode.Expand(); } } } /// <summary> /// 递归查找父节点 /// </summary> /// <param name="tnParent">指定一个根节点,然后遍历它</param> /// <param name="strValue">所要查找的节点的Name</param> /// 作者:阮班波 /// 日期:2009-03-16 private TreeNode FindNode(TreeNode tnParent, string strValue) { if (tnParent == null) return null; if (tnParent.Name == strValue) return tnParent; TreeNode tnRet = null; foreach (TreeNode tn in tnParent.Nodes) { tnRet = FindNode(tn, strValue); if (tnRet != null) break; } return tnRet; } } }
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