//展开选中项的子项
private void item_Expand(object sender, RoutedEventArgs e)
{
TreeViewItem treeItem = memberTreeView.SelectedItem as TreeViewItem;
if (treeItem != null)
{
MenuItem menu = sender as MenuItem;
int expLevel = int.Parse(menu.Tag.ToString());
MyTreeNode node = treeItem.Tag as MyTreeNode;
if (expLevel > 1000 && node.ChildrenCountAll > 10000)
{
string warnTxt = "你确定要一次性展开全部子节点吗？\n展开层级过大可能会由于数据量太大而造成程序卡死。";
MessageBoxResult result = MessageBox.Show(warnTxt, "警告", MessageBoxButton.YesNo);
if (result == MessageBoxResult.No)
{
return;
}
}
levels = 0;
TimingUtil.StartTiming();
MyTrees.OpenDB();
WindowView.notify.SetProcessBarVisible(true);
ExpandNode(treeItem, expLevel);
WindowView.notify.SetProcessBarVisible(false);
MyTrees.CloseDB();
WindowView.notify.SetStatusMessage(TimingUtil.EndTiming());
}
}
public void ExpandRootNode(int maxLevel)
{
levels = 0;
MyTrees.OpenDB();
ExpandNode(memberTreeView.Items[0] as TreeViewItem, maxLevel);
MyTrees.CloseDB();
}
public void SetRootNode(MyTreeNode rootNode)
{
pager.Visibility = Visibility.Hidden;
memberTreeView.Items.Clear();
ringNodeIds.Clear();
if (rootNode != null)
{
TreeViewItem rootItem = NewTreeViewItem(rootNode);
memberTreeView.Items.Add(rootItem);
//如果还有子节点，则添加一个节点，使该节点具有折叠的"+"
if (rootNode.ChildrenCount > 0)
{
rootItem.Items.Add(NewTreeViewItem(null));
}
MyTrees.OpenDB();
//判断当前根节点是否存在父节点
if (MyTrees.GetNodeBySysId(rootNode.TopId) != null)
{
btnUpLevelNode.IsEnabled = true;
btnUpRootNode.IsEnabled = true;
}
else
{
btnUpLevelNode.IsEnabled = false;
btnUpRootNode.IsEnabled = false;
}
MyTrees.CloseDB();
}
}
//节点太多，点击加载更多未显示的节点
void moreNode_Load(object sender, RoutedEventArgs e)
{
TreeViewItem moreItem = sender as TreeViewItem;
MyTreeNode node = moreItem.Tag as MyTreeNode;
TreeViewItem parentItem = moreItem.Parent as TreeViewItem;
if (parentItem != null)
{
parentItem.Items.Remove(moreItem);
MyTrees.OpenDB();
List <MyTreeNode> childrenNodes = MyTrees.GetNodesByTopIdPage(node.TopId, node.ChildrenCount);
MyTrees.CloseDB();
foreach (MyTreeNode subNode in childrenNodes)
{
TreeViewItem subItem = NewTreeViewItem(subNode);
parentItem.Items.Add(subItem);
//如果子节点还有孙子节点，则添加一个虚假的孙节点，使该子节点具有折叠的"+"
if (subNode.ChildrenCount > 0)
{
subItem.Items.Add(NewTreeViewItem(null));
}
WindowView.notify.SetStatusMessage("正在展开节点" + subItem.Header);
}
//表示分页加载更多的节点
node.ChildrenCount = node.ChildrenCount + MyTrees.getNodePageSize;
if (node.ChildrenCount < node.ChildrenCountAll)
{
parentItem.Items.Add(NewTreeViewItem(node));
}
}
}
internal static int GetIdConflictNodesCount()
{
MyTrees.OpenDB();
string sql = "select count(*) from "
+ treeDB.TableName + "_calc where sysid in (select v from "
+ treeDB.TableName + "_profile where k='Conflict')";
int count = treeDB.SearchCount(sql);
MyTrees.CloseDB();
return(count);
}
internal static List <string> GetIdConflictNodes(int pageNo, int pageSize)
{
MyTrees.OpenDB();
string sql = "select * from "
+ treeDB.TableName + "_calc where sysid in (select v from "
+ treeDB.TableName + "_profile where k='Conflict') limit "
+ (pageNo * pageSize) + ", " + pageSize;
List <string> conflictNodes = treeDB.SearchString(sql);
MyTrees.CloseDB();
return(conflictNodes);
}
internal static List <MyTreeNode> GetTreeRootNodes(int pageNo, int pageSize)
{
MyTrees.OpenDB();
string sql = "select sysid,topid,name,level,sublevel,subcount,subcountall from "
+ treeDB.TableName + "_calc where sysid in (select v from "
+ treeDB.TableName + "_profile where k='Tree') order by subcountall desc limit "
+ (pageNo * pageSize) + ", " + pageSize;
List <MyTreeNode> treeRootNodes = treeDB.SearchNode(sql);
MyTrees.CloseDB();
return(treeRootNodes);
}
internal static List <string> GetRingNodeIds()
{
if (ringNodes == null)
{
ringNodes = new List <string>();
MyTrees.OpenDB();
string sql = "select v from " + treeDB.TableName + "_profile where k='Ring'";
ringNodes = treeDB.SearchString(sql);
MyTrees.CloseDB();
}
return(ringNodes);
}
internal static List <string> GetLeafAloneNodeIds()
{
if (leafAloneNodeIds == null)
{
leafAloneNodeIds = new List <string>();
MyTrees.OpenDB();
string sql = "select v from " + treeDB.TableName + "_profile where k='Leaf'";
leafAloneNodeIds = treeDB.SearchString(sql);
MyTrees.CloseDB();
}
return(leafAloneNodeIds);
}
private static void ExportAllImgs(MyTreeView mytreeview, MyTreeNode node)
{
mytreeview.BeginExportImg();
exportNodes.Clear();
exportNodes.Add(node);
MyTrees.OpenDB();
while (exportNodes.Count > 0)
{
ExportImg(mytreeview, exportNodes[0]);
}
mytreeview.EndExportImg();
MyTrees.CloseDB();
}
internal static List <string> GetTableOptCols()
{
if (tableOptCols == null)
{
MyTrees.OpenDB();
string sql = "select v from "
+ treeDB.TableName
+ "_profile where k='TableOptCol'";
tableOptCols = treeDB.SearchString(sql);
MyTrees.CloseDB();
}
return(tableOptCols);
}
void item_Expanded(object sender, RoutedEventArgs e)
{
TreeViewItem item = e.Source as TreeViewItem;
if (item.HasItems && (item.Items[0] as TreeViewItem).Header.ToString() == "none")
{
//先移除为使该节点具有折叠的"+"而添加的虚假的子节点
item.Items.Clear();
if ((e.Source as TreeViewItem).IsSelected)
{
MyTrees.OpenDB();
}
MyTreeNode node = item.Tag as MyTreeNode;
List <MyTreeNode> childrenNodes = MyTrees.GetNodesByTopIdPage(node.SysId, 0);
foreach (MyTreeNode subNode in childrenNodes)
{
TreeViewItem subItem = NewTreeViewItem(subNode);
item.Items.Add(subItem);
//如果子节点还有孙子节点，则添加一个虚假的孙节点，使该子节点具有折叠的"+"
if (subNode.ChildrenCount > 0)
{
subItem.Items.Add(NewTreeViewItem(null));
}
WindowView.notify.SetStatusMessage("正在展开节点" + subItem.Header);
}
//表示分页加载更多的节点
if (node.ChildrenCount > MyTrees.getNodePageSize)
{
MyTreeNode moreNode = new MyTreeNode();
moreNode.SysId = "moreNode";
moreNode.Name = node.Name;
moreNode.TopId = node.SysId;
moreNode.ChildrenCount = MyTrees.getNodePageSize;
moreNode.ChildrenCountAll = node.ChildrenCount;
item.Items.Add(NewTreeViewItem(moreNode));
}
if ((e.Source as TreeViewItem).IsSelected)
{
MyTrees.CloseDB();
}
}
}
void item_SelectedChanged(object sender, RoutedPropertyChangedEventArgs <object> e)
{
TreeViewItem selectedItem = e.NewValue as TreeViewItem;
if (selectedItem != null)
{
MyTreeNode node = selectedItem.Tag as MyTreeNode;
if (node != null)
{
MyTrees.OpenDB();
string nodeDB = MyTrees.GetStringBySysId(node.SysId);
MyTrees.CloseDB();
if (nodeDB != null)
{
myNodeInfo.SetNode(nodeDB);
}
}
}
WindowView.Refresh_Online_time();
}
public static void Export2CSV(MyTreeNode node, string outputfile)
{
ringNodeIds.Clear();
WindowView.notify.SetProcessBarVisible(true);
WindowView.notify.SetStatusMessage("开始导出文件......");
TimingUtil.StartTiming();
StreamWriter mysw = new StreamWriter(outputfile, true, Encoding.Default);
List <string> optCols = MyTrees.GetTableOptCols();
string header = string.Join(",", optCols.ToArray());
header = "会员ID,父级ID,会员姓名,所在层级,下级层数,直接下级会员数,下级会员总数," + header;
mysw.WriteLine(header);
StringBuilder allLines = new StringBuilder();
MyTrees.OpenDB();
row = 2;
allRow = node.ChildrenCountAll + 1;
//导出所有父节点
ExportAllParents2CSV(mysw, allLines, node);
//导出该节点
string nodestr = MyTrees.GetStringBySysId(node.SysId);
mysw.WriteLine(nodestr);
//导出该节点所有子节点
ExportAllChildren2CSV(mysw, allLines, node);
MyTrees.CloseDB();
mysw.Close();
WindowView.notify.SetStatusMessage(TimingUtil.EndTiming());
WindowView.notify.SetProcessBarVisible(false);
}
internal static Dictionary <string, string> GetRingNodes(int pageNo, int pageSize)
{
MyTrees.OpenDB();
string sql = "select * from "
+ treeDB.TableName + "_calc where sysid in (select v from "
+ treeDB.TableName + "_profile where k='Ring') limit "
+ (pageNo * pageSize) + ", " + pageSize;
List <string> nodes = treeDB.SearchString(sql);
MyTrees.CloseDB();
Dictionary <string, string> ringNodes = new Dictionary <string, string>();
foreach (string node in nodes)
{
string sysid = node.Substring(0, node.IndexOf(","));
if (!ringNodes.ContainsKey(sysid))
{
ringNodes.Add(sysid, node);
}
}
return(ringNodes);
}
//显示上一级节点
private void btnUpLevelNode_Click(object sender, RoutedEventArgs e)
{
MyTrees.OpenDB();
TreeViewItem oldRootItem = memberTreeView.Items[0] as TreeViewItem;
MyTreeNode oldRootNode = oldRootItem.Tag as MyTreeNode;
MyTreeNode newRootNode = MyTrees.GetNodeBySysId(oldRootNode.TopId);
if (isRingClose(newRootNode.SysId))
{
return;
}
//先移除旧的根节点
memberTreeView.Items.Remove(oldRootItem);
//添加新的根节点
TreeViewItem newRootItem = NewTreeViewItem(newRootNode);
memberTreeView.Items.Add(newRootItem);
newRootItem.IsExpanded = true;
//新的根节点添加子节点
List <MyTreeNode> childrenNodes = MyTrees.GetNodesByTopIdPage(newRootNode.SysId, 0);
bool hasNotAdded = true;
foreach (MyTreeNode subNode in childrenNodes)
{
if (hasNotAdded)
{
if (oldRootNode.SysId == subNode.SysId)
{
newRootItem.Items.Add(oldRootItem);
hasNotAdded = false;
continue;
}
}
TreeViewItem subItem = NewTreeViewItem(subNode);
newRootItem.Items.Add(subItem);
//如果子节点还有孙子节点，则添加一个虚假的孙节点，使该子节点具有折叠的"+"
if (subNode.ChildrenCount > 0)
{
subItem.Items.Add(NewTreeViewItem(null));
}
}
//表示分页加载更多的节点
if (newRootNode.ChildrenCount > MyTrees.getNodePageSize)
{
MyTreeNode moreNode = new MyTreeNode();
moreNode.SysId = "moreNode";
moreNode.Name = newRootNode.Name;
moreNode.TopId = newRootNode.SysId;
moreNode.ChildrenCount = MyTrees.getNodePageSize;
moreNode.ChildrenCountAll = newRootNode.ChildrenCount;
newRootItem.Items.Add(NewTreeViewItem(moreNode));
}
//判断当前根节点是否存在父节点
if (MyTrees.GetNodeBySysId(newRootNode.TopId) != null)
{
btnUpLevelNode.IsEnabled = true;
btnUpRootNode.IsEnabled = true;
}
else
{
btnUpLevelNode.IsEnabled = false;
btnUpRootNode.IsEnabled = false;
}
MyTrees.CloseDB();
}