/// <summary> /// 如果需要,创建初始的 UI 元素。 /// </summary> private void UpdateVisualTree() { if (this.NeedUpdateVisualTree) { var internalChildren = base.UIChildren; internalChildren.Clear(); foreach (var column in base.Columns) { var summary = new TreeGridColumnSummary(); summary.Column = column; summary.DataContext = column; summary.SetBinding(TreeGridColumnSummary.SummaryTextProperty, TreeGridColumn.SummaryProperty); summary.IsSummaryVisible = column.NeedSummary; internalChildren.Add(summary); } //在所有列后添加一个 _paddingSummary。 this._paddingSummary = new TreeGridColumnSummary(); internalChildren.Add(this._paddingSummary); //把 rowTitle 添加为最后一个元素。 var grid = this.TreeGrid; this._summaryRowTitle = new TextBlock { Text = grid.SummaryRowTitle, Style = grid.SummaryRowTitleStyle }; internalChildren.Add(this._summaryRowTitle); this.NeedUpdateVisualTree = false; } }
/// <summary> /// 如果需要,创建初始的 UI 元素。 /// </summary> private void UpdateVisualTree() { if (this.NeedUpdateVisualTree) { var internalChildren = base.UIChildren; internalChildren.Clear(); foreach (var column in base.Columns) { var summary = new TreeGridColumnSummary(); summary.Column = column; summary.DataContext = column; summary.SetBinding(TreeGridColumnSummary.SummaryTextProperty, TreeGridColumn.SummaryProperty); summary.IsSummaryVisible = column.NeedSummary; internalChildren.Add(summary); } //在所有列后添加一个 _paddingSummary。 this._paddingSummary = new TreeGridColumnSummary(); internalChildren.Add(this._paddingSummary); //把 rowTitle 添加为最后一个元素。 var grid = this.TreeGrid; this._summaryRowTitle = new TextBlock { Text = grid.SummaryRowTitle, Style = grid.SummaryRowTitleStyle }; internalChildren.Add(this._summaryRowTitle); this.NeedUpdateVisualTree = false; } }