Linq绑定TreeView

一 Linq绑定TreeView

1.绑定

private void AddTreeView()
        {

            var data = GetParentData();
            if (data.Any())
            {
                foreach (var d in data)
                {
                    TreeNode node = new TreeNode();
                    node.Text = d.M_Name;
                    node.Value = d.M_ID.ToString();
                    this.tvMenu.Nodes.Add(node);
                    AddChildTreeView(node, d.M_ID);
                }
            }
        }
        public void AddChildTreeView(TreeNode tn, int ? parentid)
        {

            var source = GetChildData(parentid);
            if (source.Any())
            {
                foreach (var s in source)
                {
                    TreeNode cnode = new TreeNode();
                    cnode.Text = s.M_Name;
                    cnode.Value = s.M_ID.ToString();
                    tn.ChildNodes.Add(cnode); //WinForm 这样写 tn.Nodes.Add(cnode);
                    AddChildTreeView(cnode, s.M_ID);
                }
            }
        }

        public IQueryable GetParentData()
        {
            lq = new LQDataContext();
            var data = from d in lq.Modules
                       where d.M_FID == 0
                       select d;
            return data;
        }
        public IQueryable GetChildData(int? parentid)
        {
            lq = new LQDataContext();
            var child = from c in lq.Modules
                        where c.M_FID == parentid
                        select c;
            return child;
        }

 

2 数据库结构

CREATE TABLE Module
(
  M_ID INT IDENTITY(1,1) PRIMARY KEY,
  M_Name NVARCHAR(20),
  M_Url NVARCHAR(100),
  M_FID INT ,
  M_OrderNo int
)

GO

 

二 DataTable绑定TreeView

三TreeView CheckBox全选 以及获取选中的值