1、 private ArrayList _columnList = new ArrayList(); private int _cellHeight = 17; public int CellHeight get return _cellHeight; set _cellHeight = value; private int _columnDeep = 1; private bool HscrollRefresh = false; / / 水平滚动时是否刷新表头,数据较多时可能会闪烁,不刷新时可能显示错误/summary Description(水平滚动时是否刷新表头,数据较多时可能会闪烁,不刷
2、新时可能显示错误) public bool RefreshAtHscroll get return HscrollRefresh; set HscrollRefresh = value; / 构造函数 public HeaderUnitView() InitializeComponent(); this.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.DisableResizing; /设置列高度显示模式 public HeaderUnitView(IContainer container) conta
3、iner.Add(this);设置或获得合并表头树的深度 public int ColumnDeep get if (this.Columns.Count = 0) _columnDeep = 1; this.ColumnHeadersHeight = _cellHeight * _columnDeep; return _columnDeep; set if (value 1) else _columnDeep = value;添加合并式单元格绘制的所需要的节点对象 public TreeView ColumnTreeView get return _columnTreeView; if (_
4、columnTreeView != null) for (int i = 0; i = _columnTreeView.Length - 1; i+) _columnTreeViewi.Dispose(); _columnTreeView = value;设置添加的字段树的相关属性 public TreeView ColumnTreeViewNode get return _columnTreeView0; / 设置或获取合并列的集合 MergableProperty(false) Editor(System.Windows.Forms.Design.ListControlStringColl
5、ectionEditor, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, typeof(UITypeEditor) DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Visible) Localizable(true)设置或获取合并列的集合), Browsable(true), Category(单元格合并 public List MergeColumnNa
6、mes return _mergecolumnname; _mergecolumnname = value; private List _mergecolumnname = new List(); public ArrayList NadirColumnList if (_columnTreeView = null) return null; if (_columnTreeView0 = null) if (_columnTreeView0.Nodes = null) if (_columnTreeView0.Nodes.Count = 0) _columnList.Clear(); GetN
7、adirColumnNodes(_columnList, _columnTreeView0.Nodes0, false); return _columnList; /合并表头节点e绘图参数集level结点深度 public void PaintUnitHeader( TreeNode node, System.Windows.Forms.DataGridViewCellPaintingEventArgs e, int level) /根节点时退出递归调用 if (level = 0) return; RectangleF uhRectangle; int uhWidth; SolidBrush
8、 gridBrush = new SolidBrush(this.GridColor); SolidBrush backColorBrush = new SolidBrush(e.CellStyle.BackColor); Pen gridLinePen = new Pen(gridBrush); StringFormat textFormat = new StringFormat(); textFormat.Alignment = StringAlignment.Center; uhWidth = GetUnitHeaderWidth(node); if (node.Nodes.Count
9、= 0) uhRectangle = new Rectangle(e.CellBounds.Left, e.CellBounds.Top + node.Level * _cellHeight, uhWidth - 1, _cellHeight * (_columnDeep - node.Level) - 1); uhRectangle = new Rectangle( e.CellBounds.Left, _cellHeight - 1); /画矩形 e.Graphics.FillRectangle(backColorBrush, uhRectangle); /划底线 e.Graphics.D
10、rawLine(gridLinePen , uhRectangle.Left , uhRectangle.Bottom , uhRectangle.Right , uhRectangle.Bottom); /划右端线 , uhRectangle.Top /写字段文本 e.Graphics.DrawString(node.Text, this.Font , new SolidBrush(e.CellStyle.ForeColor) , uhRectangle.Left + uhRectangle.Width / 2 - e.Graphics.MeasureString(node.Text, th
11、is.Font).Width / 2 - 1 , uhRectangle.Top + uhRectangle.Height / 2 - e.Graphics.MeasureString(node.Text, this.Font).Height / 2); /递归调用() if (node.PrevNode = null) if (node.Parent ! PaintUnitHeader(node.Parent, e, level - 1); / 获得合并标题字段的宽度字段节点字段宽度 private int GetUnitHeaderWidth(TreeNode node) /获得非最底层字
12、段的宽度 int uhWidth = 0; /获得最底层字段的宽度 if (node.Nodes = null) return this.ColumnsGetColumnListNodeIndex(node).Width;= node.Nodes.Count - 1; uhWidth = uhWidth + GetUnitHeaderWidth(node.Nodesi); return uhWidth; / 获得底层字段索引 / 底层字段节点索引 private int GetColumnListNodeIndex(TreeNode node)= _columnList.Count - 1;
13、if (TreeNode)_columnListi).Equals(node) return i; return -1; / 获得底层字段集合alList底层字段集合checked向上搜索与否 private void GetNadirColumnNodes( ArrayList alList, Boolean isChecked) if (isChecked = false) if (node.FirstNode = null) alList.Add(node); if (node.NextNode ! GetNadirColumnNodes(alList, node.NextNode, false); GetNadirColumnNodes(alList, node.Parent, true); if (node.FirstNode ! GetNadirColumnNodes(alList, node.FirstNode, false); GetNadirColumnNodes(alList, node.NextNode, f
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