场景
winform控件-devexpress18下载安装注册以及在vs中使用：
https://blog.csdn.net/badao_liumang_qizhi/article/details/100061243
在上面已经实现devexpress的安装之后，拖拽一个treelist，然后怎样给其设置数据源。
devexpress的treelist怎样设置数据源，从实例入手：
https://blog.csdn.net/badao_liumang_qizhi/article/details/102548490
参照上面进行设置数据源的过程。
注：
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实现
首先新建一个winform程序，然后拖拽一个treelist控件
然后双击进入窗体的加载事件中，如果在别的地方设置数据源同理。
首先进行treelist样式等的设置
#region 设置列头、节点指示器面板、表格线样式
treelist1.optionsview.showcolumns = false; //隐藏列标头
treelist1.optionsview.showindicator = false; //隐藏节点指示器面板
treelist1.optionsview.showhorzlines = false; //隐藏水平表格线
treelist1.optionsview.showvertlines = false; //隐藏垂直表格线
treelist1.optionsview.showindentasrowstyle = false;
#endregion
#region 初始禁用单元格选中，禁用整行选中
treelist1.optionsview.showfocusedframe = true; //设置显示焦点框
treelist1.optionsselection.enableappearancefocusedcell = false; //禁用单元格选中
treelist1.optionsselection.enableappearancefocusedrow = false; //禁用正行选中
#endregion
#region 设置treelist的展开折叠按钮样式和树线样式
treelist1.optionsview.showbuttons = true; //显示展开折叠按钮
treelist1.lookandfeel.usedefaultlookandfeel = false; //禁用默认外观与感觉
treelist1.lookandfeel.usewindowsxptheme = true; //使用windowsxp主题
treelist1.treelinestyle = devexpress.xtratreelist.linestyle.percent50; //设置树线的样式
#endregion
然后设置其单列显示
#region 添加单列
devexpress.xtratreelist.columns.treelistcolumn colnode = new devexpress.xtratreelist.columns.treelistcolumn();
colnode.name = string.format("col{0}", "nodetext");
colnode.caption = "nodetext";
colnode.fieldname = "nodetext";
colnode.visibleindex = 0;
colnode.visible = true;
colnode.optionscolumn.allowedit = false; //是否允许编辑
colnode.optionscolumn.allowmove = false; //是否允许移动
colnode.optionscolumn.allowmovetocustomizationform = false; //是否允许移动至自定义窗体
colnode.optionscolumn.allowsort = false; //是否允许排序
colnode.optionscolumn.fixedwidth = false; //是否固定列宽
colnode.optionscolumn.readonly = true; //是否只读
colnode.optionscolumn.showincustomizationform = true; //移除列后是否允许在自定义窗体中显示
treelist1.columns.clear();
treelist1.columns.addrange(new devexpress.xtratreelist.columns.treelistcolumn[] { colnode });
#endregion
注：
这里的fieldname 要与数据源中要显示的属性名相对应。
然后设置作为识别节点的主键字段，这里使用id来区分标记每个节点；设置其父节点的标记属性。
treelist1.keyfieldname = "id"; treelist1.parentfieldname = "parentid";
为了构建数据源，我们需要新建一个datatreenode类
using system;
using system.collections.generic;
using system.linq;
using system.text;
using system.threading.tasks;
namespace treelisttest
{
public class datatreenode
{
private string id;
private string parentid;
private string nodetext;
public string id
{
get { return id; }
set { id = value; }
}
public string parentid
{
get { return parentid; }
set { parentid = value; }
}
public string nodetext
{
get { return nodetext; }
set { nodetext = value; }
}
}
}
然后再回到上面构建数据源
datatreenode node1 = new datatreenode();
node1.id = "1";
node1.parentid = null;
node1.nodetext = "1公众号";
datatreenode node11 = new datatreenode();
node11.id = "2";
node11.parentid = "1";
node11.nodetext = "1-1霸道的程序猿";
datatreenode node111 = new datatreenode();
node111.id = "3";
node111.parentid = "2";
node111.nodetext = "1-1-1大量编程资源";
list<datatreenode> data = new list<datatreenode>();
data.add(node1);
data.add(node11);
data.add(node111);
然后给treelist设置数据源
treelist1.datasource = data; treelist1.refreshdatasource();
最终完整的窗体加载方法代码
private void form1_load(object sender, eventargs e)
{
#region 设置列头、节点指示器面板、表格线样式
treelist1.optionsview.showcolumns = false; //隐藏列标头
treelist1.optionsview.showindicator = false; //隐藏节点指示器面板
treelist1.optionsview.showhorzlines = false; //隐藏水平表格线
treelist1.optionsview.showvertlines = false; //隐藏垂直表格线
treelist1.optionsview.showindentasrowstyle = false;
#endregion
#region 初始禁用单元格选中，禁用整行选中
treelist1.optionsview.showfocusedframe = true; //设置显示焦点框
treelist1.optionsselection.enableappearancefocusedcell = false; //禁用单元格选中
treelist1.optionsselection.enableappearancefocusedrow = false; //禁用正行选中
#endregion
#region 设置treelist的展开折叠按钮样式和树线样式
treelist1.optionsview.showbuttons = true; //显示展开折叠按钮
treelist1.lookandfeel.usedefaultlookandfeel = false; //禁用默认外观与感觉
treelist1.lookandfeel.usewindowsxptheme = true; //使用windowsxp主题
treelist1.treelinestyle = devexpress.xtratreelist.linestyle.percent50; //设置树线的样式
#endregion
#region 添加单列
devexpress.xtratreelist.columns.treelistcolumn colnode = new devexpress.xtratreelist.columns.treelistcolumn();
colnode.name = string.format("col{0}", "nodetext");
colnode.caption = "nodetext";
colnode.fieldname = "nodetext";
colnode.visibleindex = 0;
colnode.visible = true;
colnode.optionscolumn.allowedit = false; //是否允许编辑
colnode.optionscolumn.allowmove = false; //是否允许移动
colnode.optionscolumn.allowmovetocustomizationform = false; //是否允许移动至自定义窗体
colnode.optionscolumn.allowsort = false; //是否允许排序
colnode.optionscolumn.fixedwidth = false; //是否固定列宽
colnode.optionscolumn.readonly = true; //是否只读
colnode.optionscolumn.showincustomizationform = true; //移除列后是否允许在自定义窗体中显示
treelist1.columns.clear();
treelist1.columns.addrange(new devexpress.xtratreelist.columns.treelistcolumn[] { colnode });
#endregion
treelist1.keyfieldname = "id";
treelist1.parentfieldname = "parentid";
datatreenode node1 = new datatreenode();
node1.id = "1";
node1.parentid = null;
node1.nodetext = "1公众号";
datatreenode node11 = new datatreenode();
node11.id = "2";
node11.parentid = "1";
node11.nodetext = "1-1霸道的程序猿";
datatreenode node111 = new datatreenode();
node111.id = "3";
node111.parentid = "2";
node111.nodetext = "1-1-1大量编程资源";
list<datatreenode> data = new list<datatreenode>();
data.add(node1);
data.add(node11);
data.add(node111);
treelist1.datasource = data;
treelist1.refreshdatasource();
}
