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cxDBTreelist一些使用方法
一、导出EXCEL TXT HTML:
uses cxTLExportLink;
cxExportTLToEXCEL(dm.SaveDialog.FileName,cxDBTreeList1,TRUE,TRUE); //轉入EXCEL
cxExportTLToTEXT(dm.SaveDialog.FileName,cxDBTreeList1,TRUE,TRUE); //轉入TXT
cxExportTLToHTML(dm.SaveDialog.FileName,cxDBTreeList1,TRUE,TRUE); //轉入HTML
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二、cxdbtreelist1共多少条记录: showmessage(inttostr(cxtreelist1.VisibleCount));
cxdbtreelist1当前记录的索引: showmessage(inttostr(cxTreeList1.FocusedNode.VisibleIndex));
cxdbtreelist1有多少列: showmessage(inttostr(cxtreelist1.VisibleColumnCount));
cxdbtreelist1当前记录的层级: showmessage(inttostr(cxTreeList1.FocusedNode.Level));
cxdbtreelist1自动展开: cxtreelist1.fullexpand; //自动展开
cxdbtreelist1自动折叠 : cxtreelist1.FullCollapse;
cxdbtreelist1取上级节点内容: ShowMessage(cxdbTreeList1.FocusedNode.Parent.Values[0]);
三、新增、删除结点:
增加同级结点:
procedure Tfr_bommglin.cxButton1Click(Sender: TObject);
var node:TcxTreeListNode;
begin
node:=cxdbTreeList1.FocusedNode.Parent.AddChild;
node.Values[0]:=‘aaaaa‘;
node.Values[1]:=node.Level;
end;
增加下级节点:
procedure Tfr_bommglin.cxButton2Click(Sender: TObject);
var node:TcxTreeListNode;
begin
node:=cxdbTreeList1.FocusedNode.AddChild; //增加子节点在首记录:cxdbTreeList1.FocusedNode.AddChildFirst;
node.Values[0]:=‘aaaaa‘;
node.Values[1]:=node.Level+1;
cxdbTreeList1.FocusedNode.Expanded:=true; //展开子节点
end;
删除节点:
ClientDataSet1.GetBookmark;
cxdbTreeList1.FocusedNode.Delete; //删除当前节点记录;删除当前节点的子节点:cxdbTreeList1.FocusedNode.DeleteChildren;
cxDBTreeList1.DataController.GotoBookmark;
多节点选择删除:
cxDBTreeList1.DeleteSelection
数据集控制:
cxDBTreeList1.DataController.dataset.GotoFirst; //GotoLast gotonext gotoprev GotoBookmark
cxDBTreeList1.DataController.dataset.Append; //cancel updatedata
cxDBTreeList1.DataController.dataset.edit;
根据cxdbtreelist随clientdataset1记录定位:
首先:bl:=cxDBTreeList1.DataController.DataSet.GetBookmark;
接着:cxDBTreeList1.DataController.DataSet.GotoBookmark(bl);
cxDBTreeList1.SetFocus;
多结点选择取记录:
for i:=0 to cxDBTreeList1.SelectionCount-1 do
begin
ShowMessage(cxDBTreeList1.Selections[i].Values[1]);
end;
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三、增加节点图片:
先在窗体上放ImageList关联到cxDBTreeList,在cxDBTreeList的GetNodeImageIndex事件中写如下:
procedure cxDBTreeList1GetNodeImageIndex(Sender:TcxCustomTreeList; ANode: TcxTreeListNode; AIndexType:
TcxTreeListImageIndexType; var AIndex: TImageIndex);
var
i :Integer;
begin
//给树结点加上图标
for i := 0 to ANode.ValueCount do
begin
if ANode.Level = 0 then
begin
ANode.ImageIndex := 0;
end
else
if ANode.Level = 1 then
begin
ANode.ImageIndex := 2;
end
else
if ANode.Level = 2 then
begin
ANode.ImageIndex := 1;
end;
end;
end;
cxDBTreelist一些使用方法