超树节点中的绑定下拉

Question

我需要在dropdown节点中绑定一个Ultrawintree。当用户双击节点的单元格时，它应该是可编辑的，因此我需要在dropdown中显示一些值。以便用户可以选择值并保存/更新。

//代码

 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Dim columnSet As UltraTreeColumnSet = Me.ultraTree1.ColumnSettings.ColumnSets(0)

        '   Use the ActiveCellAppearance to bring attention to the cell
        '   with the input focus
        columnSet.ActiveCellAppearance.BackColor = Color.Red
        columnSet.ActiveCellAppearance.ForeColor = Color.White

        '   Set AllowCellEdit to 'ActivateOnly' so that clicking a cell does
        '   not put in into edit mode immediately
        columnSet.AllowCellEdit = AllowCellEdit.Full

        '   Enable tooltips for cells whose value is not fully visible
        columnSet.TipStyleCell = TipStyleCell.Show
    End Sub

所以在这里，当按钮点击发生时，单元格是完全可编辑的。但是，我需要在单元格中绑定一个dropdown。这有可能吗？

我怎么能这么做？

注意事项：我使用的是12.1的不脆弱性版本

Answer 1

解决这一任务有不同的方法。您可以尝试使用UltraTree`s节点的EditorComponent proeprty。通过这种方式，您可以为节点分配一个UltraComboEditor控件，它将显示您的下拉值。例如：

this.ultraTree1.Override.ShowEditorButtons = ShowEditorButtons.Always;
        this.ultraTree1.Override.LabelEdit = Infragistics.Win.DefaultableBoolean.True;
        this.ultraTree1.Override.UseEditor = DefaultableBoolean.True;

        DataTable dt = new DataTable("Tabl");
        dt.Columns.Add("X", typeof(Boolean));
        dt.Columns.Add("Y", typeof(String));
        dt.Rows.Add(true, "Test A");
        dt.Rows.Add(false, "Test B");
        dt.Rows.Add(false, "Test C");
        dt.Rows.Add(true, "Test D");

        ultraCombo1.DataSource = dt;
        ultraCombo1.DisplayMember = "Y";
        ultraCombo1.ValueMember = "Y";
        this.ultraTree1.NodeLevelOverrides[0].EditorComponent = ultraCombo1;

如果您正在使用UltraControlContainerEditor，那么可能会有更复杂甚至更有趣的方法。下面是我们在UltraTree`s节点中实现网格的一个小示例。例如：

this.ultraTree1.Override.ShowEditorButtons = ShowEditorButtons.Always;
        this.ultraTree1.Override.LabelEdit = Infragistics.Win.DefaultableBoolean.True;
        this.ultraTree1.Override.UseEditor = DefaultableBoolean.True;


        UltraControlContainerEditor ucc = new Infragistics.Win.UltraWinEditors.UltraControlContainerEditor();
        UltraGrid uc = new UltraGrid();
        UltraGrid uc2 = new UltraGrid();

        DataTable dt = new DataTable("Tabl");
        dt.Columns.Add("X", typeof(Boolean));
        dt.Columns.Add("Y", typeof(String));
        dt.Rows.Add(true, "Test A");
        dt.Rows.Add(false, "Test B");
        dt.Rows.Add(false, "Test C");
        dt.Rows.Add(true, "Test D");

        uc2.DataSource = dt;
        uc.DataSource = dt;

        ucc.RenderingControl = uc2;
        ucc.EditingControl = uc;
        this.ultraTree1.NodeLevelOverrides[1].EditorComponent = ucc;

请看一下截图，看看结果。

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