DevExpress控件

以下效果TreeList必须先绑定数据源，绑定方法如下：

this.treeList1.KeyFieldName = 'id'; this.treeList1.ParentFieldName = 'parentId'; this.treeList1.DataSource = ds.Tables[0];

效果一：

实现代码如下：

///

/// 窗体加载 ///

/// /// private void FrmMain_Load(object sender, EventArgs e) { //指定行为客户端为treeList1 this.txt_search.Client = this.treeList1; //定义TreeList过滤事件 treeList1.FilterNode += treeList1_FilterNode; } ///

/// 过滤事件 ///

/// /// private void treeList1_FilterNode(object sender, DevExpress.XtraTreeList.FilterNodeEventArgs e) { if (treeList1.DataSource == null) return; string NodeText = e.Node.GetDisplayText('name');//参数填写FieldName if (string.IsNullOrWhiteSpace(NodeText)) return; bool IsVisible = NodeText.ToUpper().IndexOf(txt_search.Text.ToUpper()) >= 0; if (IsVisible) { DevExpress.XtraTreeList.Nodes.TreeListNode Node = e.Node.ParentNode; while (Node != null) { if (!Node.Visible) { Node.Visible = true; Node = Node.ParentNode; } else break; } } e.Node.Visible = IsVisible; e.Handled = true; }

效果二：

实现代码如下：

///

/// 窗体加载 ///

/// /// private void FrmMain_Load(object sender, EventArgs e) { //指定行为客户端为treeList1 this.txt_search.Client = this.treeList1; //开启过滤功能 treeList1.OptionsBehavior.EnableFiltering = true; //过滤模式，枚举1.Default 2.Extended（推荐） 3.Smart（推荐） 4.Standard treeList1.OptionsFilter.FilterMode = FilterMode.Standard; //定义TreeList过滤事件 treeList1.FilterNode += treeList1_FilterNode; } ///

/// 过滤事件 ///

/// /// private void treeList1_FilterNode(object sender, DevExpress.XtraTreeList.FilterNodeEventArgs e) { if (treeList1.DataSource == null) return; string NodeText = e.Node.GetDisplayText('name');//参数填写FieldName if (string.IsNullOrWhiteSpace(NodeText)) return; bool IsVisible = NodeText.ToUpper().IndexOf(txt_search.Text.ToUpper()) >= 0; if (IsVisible) { DevExpress.XtraTreeList.Nodes.TreeListNode Node = e.Node.ParentNode; while (Node != null) { if (!Node.Visible) { Node.Visible = true; Node = Node.ParentNode; } else break; } } e.Node.Visible = IsVisible; e.Handled = true; }