vc++MFC编程怎么 遍历 窗口中 树控件上的数据？不用数据库做……

跟正常的树一样，比如前序遍历

bool CMy1Dlg::preorder(HTREEITEM t)

{

if(t)

{

UpdateData(true)

m_show+=c_tree.GetItemText(t)

m_show+=_T(",")

UpdateData(false)

if(preorder(c_tree.GetNextSiblingItem(t)))

{

if(preorder(c_tree.GetChildItem(t)))

{

return true

}

}

return false

}

else

{

return true

}

}

void CMy1Dlg::OnBnClickedButton2()

{

// TODO: 在此添加控件通知处理程序代码

m_show=_T("")

UpdateData(false)

preorder(c_tree.GetRootItem())

}

其中c_tree是树控件的变量，m_show是一个编辑框的CString变量，用来输出遍历的结果，preorder这个函数放在对话框类的中

这里的OnBnClickedButton2这个按钮事件是用来触发遍历的

如果需要源程序的话留个邮箱发给你

从你的数据表中读出父子节点表到DataTable中，然后按上下级关系一个个添加就可以。添加父子节点只需另写一个功能很数据表中加就行，比较简单。

给你一个示例，大概是这样子。

private void ShowTree()

{

this.SystemTree.Nodes.Clear()

TreeNode rootNode = new TreeNode()

rootNode.Text = "XXXXXXXX"

rootNode.Value = ""

int status = 0

rootNode.NavigateUrl = "javascript:SelectNode('root',' '," + Convert.ToString(nodeid++) + "," + status + ")"

this.SystemTree.Nodes.Add(rootNode)

SubsystemManagement subSystem = new SubsystemManagement()

DataTable dt = new DataTable()

dt = subSystem.GetAllsubsystemInfo() //显示子系统名称

foreach (DataRow dr in dt.Rows)

{

TreeNode subNode = new TreeNode()

string subSysName = dr["CFunName"].ToString()

subNode.Text = subSysName

string subSysId = dr["CFunctionID"].ToString()

subNode.Value = subSysId

status = 1

subNode.NavigateUrl = "javascript:SelectNode('subsys','" + subSysId + "'," + Convert.ToString((nodeid++)) + "," + status + ")"

rootNode.ChildNodes.Add(subNode)

rootNode.Expanded = true

DataTable sdt = new DataTable()

sdt = subSystem.GetModulesBySubSysId(subSysId)//显示模块名称

foreach (DataRow sdr in sdt.Rows)

{

TreeNode sNode = new TreeNode()

string moduleName = sdr["CFunName"].ToString()

sNode.Text = moduleName

string moduleId = sdr["CFunctionId"].ToString()

sNode.Value = moduleId

status = 1

sNode.NavigateUrl = "javascript:SelectNode('module','" + moduleId + "'," + Convert.ToString((nodeid++)) + "," + status + ")"

subNode.ChildNodes.Add(sNode)

subNode.Expanded = true

DataTable fdt = new DataTable()

fdt = subSystem.GetFunctionsByModuleId(moduleId)//显示功能名称

foreach (DataRow fdr in fdt.Rows)

{

TreeNode fNode = new TreeNode()

fNode.Text = fdr["CFunName"].ToString()

fNode.Value = fdr["CFunctionId"].ToString()

status = 2

fNode.NavigateUrl = "javascript:SelectNode('function','" + fdr["CFunctionId"].ToString() + "'," + Convert.ToString((nodeid++)) + "," + status + ")"

sNode.ChildNodes.Add(fNode)

sNode.Expanded = false

}

}

}

}

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