問(wèn)題：C#中Winform程序中如何實(shí)現(xiàn)多維表頭。

在網(wǎng)上搜了很多方法，大多數(shù)方法對(duì)于我這種新手，看的都不是很懂。最后在新浪博客看到了一篇比較易懂的文章：【DataGridView二維表頭與合并單元格】

大體的思路如下：

1.新建一個(gè)項(xiàng)目：

2.右鍵項(xiàng)目名稱添加一個(gè)組件名為：HeaderUnitView.cs

3.點(diǎn)擊【單擊此處切換到代碼視圖】代碼：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Design;
using System.Diagnostics;namespace WindowsFormsApplication1
{public partial class HeaderUnitView : DataGridView{private TreeView[] _columnTreeView;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;/// <summary>  /// 水平滾動(dòng)時(shí)是否刷新表頭，數(shù)據(jù)較多時(shí)可能會(huì)閃爍，不刷新時(shí)可能顯示錯(cuò)誤  /// </summary>  [Description("水平滾動(dòng)時(shí)是否刷新表頭，數(shù)據(jù)較多時(shí)可能會(huì)閃爍，不刷新時(shí)可能顯示錯(cuò)誤")]public bool RefreshAtHscroll{get { return HscrollRefresh; }set { HscrollRefresh = value; }}/// <summary>/// 構(gòu)造函數(shù)/// </summary>public HeaderUnitView(){InitializeComponent();this.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.DisableResizing;//設(shè)置列高度顯示模式              }public HeaderUnitView(IContainer container){container.Add(this);InitializeComponent();}[Description("設(shè)置或獲得合并表頭樹(shù)的深度")]public int ColumnDeep{get{if (this.Columns.Count == 0)_columnDeep = 1;this.ColumnHeadersHeight = _cellHeight * _columnDeep;return _columnDeep;}set{if (value < 1)_columnDeep = 1;else_columnDeep = value;this.ColumnHeadersHeight = _cellHeight * _columnDeep;}}[Description("添加合并式單元格繪制的所需要的節(jié)點(diǎn)對(duì)象")]public TreeView[] ColumnTreeView{get { return _columnTreeView; }set{if (_columnTreeView != null){for (int i = 0; i <= _columnTreeView.Length - 1; i++)_columnTreeView[i].Dispose();}_columnTreeView = value;}}[Description("設(shè)置添加的字段樹(shù)的相關(guān)屬性")]public TreeView ColumnTreeViewNode{get { return _columnTreeView[0]; }}/// <summary>/// 設(shè)置或獲取合并列的集合/// </summary>[MergableProperty(false)][Editor("System.Windows.Forms.Design.ListControlStringCollectionEditor, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(UITypeEditor))][DesignerSerializationVisibility(System.ComponentModel.DesignerSerializationVisibility.Visible)][Localizable(true)][Description("設(shè)置或獲取合并列的集合"), Browsable(true), Category("單元格合并")]public List<string> MergeColumnNames{get{return _mergecolumnname;}set{_mergecolumnname = value;}}private List<string> _mergecolumnname = new List<string>();public ArrayList NadirColumnList{get{if (_columnTreeView == null)return null;if (_columnTreeView[0] == null)return null;if (_columnTreeView[0].Nodes == null)return null;if (_columnTreeView[0].Nodes.Count == 0)return null;_columnList.Clear();GetNadirColumnNodes(_columnList, _columnTreeView[0].Nodes[0], false);return _columnList;}}///<summary>  ///繪制合并表頭  ///</summary>  ///<param name="node">合并表頭節(jié)點(diǎn)</param>  ///<param name="e">繪圖參數(shù)集</param>  ///<param name="level">結(jié)點(diǎn)深度</param>  ///<remarks></remarks>  public void PaintUnitHeader(TreeNode node,System.Windows.Forms.DataGridViewCellPaintingEventArgs e,int level){//根節(jié)點(diǎn)時(shí)退出遞歸調(diào)用  if (level == 0)return;RectangleF uhRectangle;int uhWidth;SolidBrush 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 == 0){uhRectangle = new Rectangle(e.CellBounds.Left,e.CellBounds.Top + node.Level * _cellHeight,uhWidth - 1,_cellHeight * (_columnDeep - node.Level) - 1);}else{uhRectangle = new Rectangle(e.CellBounds.Left,e.CellBounds.Top + node.Level * _cellHeight,uhWidth - 1,_cellHeight - 1);}//畫(huà)矩形  e.Graphics.FillRectangle(backColorBrush, uhRectangle);//劃底線  e.Graphics.DrawLine(gridLinePen, uhRectangle.Left, uhRectangle.Bottom, uhRectangle.Right, uhRectangle.Bottom);//劃右端線  e.Graphics.DrawLine(gridLinePen, uhRectangle.Right, uhRectangle.Top, uhRectangle.Right, uhRectangle.Bottom);寫(xiě)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, this.Font).Width / 2 - 1, uhRectangle.Top +uhRectangle.Height / 2 - e.Graphics.MeasureString(node.Text, this.Font).Height / 2);//遞歸調(diào)用()  if (node.PrevNode == null)if (node.Parent != null)PaintUnitHeader(node.Parent, e, level - 1);}/// <summary>  /// 獲得合并標(biāo)題字段的寬度  /// </summary>  /// <param name="node">字段節(jié)點(diǎn)</param>  /// <returns>字段寬度</returns>  /// <remarks></remarks>  private int GetUnitHeaderWidth(TreeNode node){//獲得非最底層字段的寬度  int uhWidth = 0;//獲得最底層字段的寬度  if (node.Nodes == null)return this.Columns[GetColumnListNodeIndex(node)].Width;if (node.Nodes.Count == 0)return this.Columns[GetColumnListNodeIndex(node)].Width;for (int i = 0; i <= node.Nodes.Count - 1; i++){uhWidth = uhWidth + GetUnitHeaderWidth(node.Nodes[i]);}return uhWidth;}/// <summary>  /// 獲得底層字段索引  /// </summary>  ///' <param name="node">底層字段節(jié)點(diǎn)</param>  /// <returns>索引</returns>  /// <remarks></remarks>  private int GetColumnListNodeIndex(TreeNode node){for (int i = 0; i <= _columnList.Count - 1; i++){if (((TreeNode)_columnList[i]).Equals(node))return i;}return -1;}/// <summary>  /// 獲得底層字段集合  /// </summary>  /// <param name="alList">底層字段集合</param>  /// <param name="node">字段節(jié)點(diǎn)</param>  /// <param name="checked">向上搜索與否</param>  /// <remarks></remarks>  private void GetNadirColumnNodes(ArrayList alList,TreeNode node,Boolean isChecked){if (isChecked == false){if (node.FirstNode == null){alList.Add(node);if (node.NextNode != null){GetNadirColumnNodes(alList, node.NextNode, false);return;}if (node.Parent != null){GetNadirColumnNodes(alList, node.Parent, true);return;}}else{if (node.FirstNode != null){GetNadirColumnNodes(alList, node.FirstNode, false);return;}}}else{if (node.FirstNode == null){return;}else{if (node.NextNode != null){GetNadirColumnNodes(alList, node.NextNode, false);return;}if (node.Parent != null){GetNadirColumnNodes(alList, node.Parent, true);return;}}}}/// <summary>  /// 滾動(dòng)  /// </summary>  /// <param name="e"></param>  protected override void OnScroll(ScrollEventArgs e){bool scrollDirection = (e.ScrollOrientation == ScrollOrientation.HorizontalScroll);base.OnScroll(e);if (RefreshAtHscroll && scrollDirection)this.Refresh();}/// <summary>  /// 列寬度改變的重寫(xiě)  /// </summary>  /// <param name="e"></param>  protected override void OnColumnWidthChanged(DataGridViewColumnEventArgs e){Graphics g = Graphics.FromHwnd(this.Handle);float uwh = g.MeasureString(e.Column.HeaderText, this.Font).Width;if (uwh >= e.Column.Width) { e.Column.Width = Convert.ToInt16(uwh); }base.OnColumnWidthChanged(e);}/// <summary>  /// 單元格繪制(重寫(xiě))  /// </summary>  /// <param name="e"></param>  /// <remarks></remarks>  protected override void OnCellPainting(System.Windows.Forms.DataGridViewCellPaintingEventArgs e){try{if (e.RowIndex > -1 && e.ColumnIndex > -1){DrawCell(e);}else{//行標(biāo)題不重寫(xiě)  if (e.ColumnIndex < 0){base.OnCellPainting(e);return;}if (_columnDeep == 1){base.OnCellPainting(e);return;}//繪制表頭  if (e.RowIndex == -1){if (e.ColumnIndex >= NadirColumnList.Count) { e.Handled = true; return; }PaintUnitHeader((TreeNode)NadirColumnList[e.ColumnIndex], e, _columnDeep);e.Handled = true;}}}catch{ }}#region 合并單元格/// <summary>/// 畫(huà)單元格/// </summary>/// <param name="e"></param>private void DrawCell(DataGridViewCellPaintingEventArgs e){if (e.CellStyle.Alignment == DataGridViewContentAlignment.NotSet){e.CellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;}Brush gridBrush = new SolidBrush(this.GridColor);SolidBrush backBrush = new SolidBrush(e.CellStyle.BackColor);SolidBrush fontBrush = new SolidBrush(e.CellStyle.ForeColor);int cellwidth;//上面相同的行數(shù)int UpRows = 0;//下面相同的行數(shù)int DownRows = 0;//總行數(shù)int count = 0;if (this.MergeColumnNames.Contains(this.Columns[e.ColumnIndex].Name) && e.RowIndex != -1){cellwidth = e.CellBounds.Width;Pen gridLinePen = new Pen(gridBrush);string curValue = e.Value == null ? "" : e.Value.ToString().Trim();string curSelected = this.CurrentRow.Cells[e.ColumnIndex].Value == null ? "" : this.CurrentRow.Cells[e.ColumnIndex].Value.ToString().Trim();if (!string.IsNullOrEmpty(curValue)){#region 獲取下面的行數(shù)for (int i = e.RowIndex; i < this.Rows.Count; i++){if (this.Rows[i].Cells[e.ColumnIndex].Value.ToString().Equals(curValue)){//this.Rows[i].Cells[e.ColumnIndex].Selected = this.Rows[e.RowIndex].Cells[e.ColumnIndex].Selected;DownRows++;if (e.RowIndex != i){cellwidth = cellwidth < this.Rows[i].Cells[e.ColumnIndex].Size.Width ? cellwidth : this.Rows[i].Cells[e.ColumnIndex].Size.Width;}}else{break;}}#endregion#region 獲取上面的行數(shù)for (int i = e.RowIndex; i >= 0; i--){if (this.Rows[i].Cells[e.ColumnIndex].Value.ToString().Equals(curValue)){//this.Rows[i].Cells[e.ColumnIndex].Selected = this.Rows[e.RowIndex].Cells[e.ColumnIndex].Selected;UpRows++;if (e.RowIndex != i){cellwidth = cellwidth < this.Rows[i].Cells[e.ColumnIndex].Size.Width ? cellwidth : this.Rows[i].Cells[e.ColumnIndex].Size.Width;}}else{break;}}#endregioncount = DownRows + UpRows - 1;if (count < 2){return;}}if (this.Rows[e.RowIndex].Selected){backBrush.Color = e.CellStyle.SelectionBackColor;fontBrush.Color = e.CellStyle.SelectionForeColor;}//以背景色填充e.Graphics.FillRectangle(backBrush, e.CellBounds);//畫(huà)字符串PaintingFont(e, cellwidth, UpRows, DownRows, count);if (DownRows == 1){e.Graphics.DrawLine(gridLinePen, e.CellBounds.Left, e.CellBounds.Bottom - 1, e.CellBounds.Right - 1, e.CellBounds.Bottom - 1);count = 0;}// 畫(huà)右邊線e.Graphics.DrawLine(gridLinePen, e.CellBounds.Right - 1, e.CellBounds.Top, e.CellBounds.Right - 1, e.CellBounds.Bottom);e.Handled = true;}}/// <summary>/// 畫(huà)字符串/// </summary>/// <param name="e"></param>/// <param name="cellwidth"></param>/// <param name="UpRows"></param>/// <param name="DownRows"></param>/// <param name="count"></param>private void PaintingFont(System.Windows.Forms.DataGridViewCellPaintingEventArgs e, int cellwidth, int UpRows, int DownRows, int count){SolidBrush fontBrush = new SolidBrush(e.CellStyle.ForeColor);int fontheight = (int)e.Graphics.MeasureString(e.Value.ToString(), e.CellStyle.Font).Height;int fontwidth = (int)e.Graphics.MeasureString(e.Value.ToString(), e.CellStyle.Font).Width;int cellheight = e.CellBounds.Height;if (e.CellStyle.Alignment == DataGridViewContentAlignment.BottomCenter){e.Graphics.DrawString((String)e.Value, e.CellStyle.Font, fontBrush, e.CellBounds.X + (cellwidth - fontwidth) / 2, e.CellBounds.Y + cellheight * DownRows - fontheight);}else if (e.CellStyle.Alignment == DataGridViewContentAlignment.BottomLeft){e.Graphics.DrawString((String)e.Value, e.CellStyle.Font, fontBrush, e.CellBounds.X, e.CellBounds.Y + cellheight * DownRows - fontheight);}else if (e.CellStyle.Alignment == DataGridViewContentAlignment.BottomRight){e.Graphics.DrawString((String)e.Value, e.CellStyle.Font, fontBrush, e.CellBounds.X + cellwidth - fontwidth, e.CellBounds.Y + cellheight * DownRows - fontheight);}else if (e.CellStyle.Alignment == DataGridViewContentAlignment.MiddleCenter){e.Graphics.DrawString((String)e.Value, e.CellStyle.Font, fontBrush, e.CellBounds.X + (cellwidth - fontwidth) / 2, e.CellBounds.Y - cellheight * (UpRows - 1) + (cellheight * count - fontheight) / 2);}else if (e.CellStyle.Alignment == DataGridViewContentAlignment.MiddleLeft){e.Graphics.DrawString((String)e.Value, e.CellStyle.Font, fontBrush, e.CellBounds.X, e.CellBounds.Y - cellheight * (UpRows - 1) + (cellheight * count - fontheight) / 2);}else if (e.CellStyle.Alignment == DataGridViewContentAlignment.MiddleRight){e.Graphics.DrawString((String)e.Value, e.CellStyle.Font, fontBrush, e.CellBounds.X + cellwidth - fontwidth, e.CellBounds.Y - cellheight * (UpRows - 1) + (cellheight * count - fontheight) / 2);}else if (e.CellStyle.Alignment == DataGridViewContentAlignment.TopCenter){e.Graphics.DrawString((String)e.Value, e.CellStyle.Font, fontBrush, e.CellBounds.X + (cellwidth - fontwidth) / 2, e.CellBounds.Y - cellheight * (UpRows - 1));}else if (e.CellStyle.Alignment == DataGridViewContentAlignment.TopLeft){e.Graphics.DrawString((String)e.Value, e.CellStyle.Font, fontBrush, e.CellBounds.X, e.CellBounds.Y - cellheight * (UpRows - 1));}else if (e.CellStyle.Alignment == DataGridViewContentAlignment.TopRight){e.Graphics.DrawString((String)e.Value, e.CellStyle.Font, fontBrush, e.CellBounds.X + cellwidth - fontwidth, e.CellBounds.Y - cellheight * (UpRows - 1));}else{e.Graphics.DrawString((String)e.Value, e.CellStyle.Font, fontBrush, e.CellBounds.X + (cellwidth - fontwidth) / 2, e.CellBounds.Y - cellheight * (UpRows - 1) + (cellheight * count - fontheight) / 2);}}#endregion}
}

4.為窗體Form1添加控件（組件）HeaderUnitView：

5.控件的設(shè)置：

A、通過(guò)屬性設(shè)置
（1）設(shè)置ColumnHeadersHeightSizeMode屬性為：DisableResizing

（2）編輯列

（3）設(shè)置ColumnDeep屬性為：2；設(shè)置CellHeight和ColumnHeadersHeight屬性 （設(shè)置一個(gè)值）
（4）設(shè)置ColumnTreeView屬性，添加TreeView

（5）設(shè)置ColumnTreeViewNode屬性，為TreeView添加節(jié)點(diǎn)。

（6）設(shè)置RefreshAtHscroll屬性為True。
（7）利用DataGridView方法綁定所要顯示的數(shù)據(jù)即可

B、通過(guò)代碼設(shè)置

 //添加列DataGridViewTextBoxColumn tcDM = newDataGridViewTextBoxColumn();tcDM.HeaderText = "班級(jí)代碼";tcDM.Name = "DM";//tcDM.DataPropertyName = "DM";tcDM.ReadOnly = true;//tcDM.SortMode =DataGridViewColumnSortMode.NotSortable;//tcDM.DefaultCellStyle.Alignment =DataGridViewContentAlignment.MiddleCenter;dgv.Columns.Add(tcDM);DataGridViewTextBoxColumn tcMC = newDataGridViewTextBoxColumn();tcMC.HeaderText = "班級(jí)名稱";tcMC.Name = "MC";tcMC.ReadOnly = true;dgv.Columns.Add(tcMC);DataGridViewTextBoxColumn tcNan = newDataGridViewTextBoxColumn();tcNan.HeaderText = "男";tcNan.Name = "Nan";tcNan.ReadOnly = true;dgv.Columns.Add(tcNan);DataGridViewTextBoxColumn tcNv = newDataGridViewTextBoxColumn();tcNv.HeaderText = "女";tcNv.Name = "Nv";tcNv.ReadOnly = true;dgv.Columns.Add(tcNv);//增加TreeViewTreeView tv = new TreeView();TreeNode tnDM = new TreeNode("班級(jí)代碼");tv.Nodes.Add(tnDM);TreeNode tnMC = new TreeNode("班級(jí)名稱");tv.Nodes.Add(tnMC);TreeNode tnSex = new TreeNode("性別");tv.Nodes.Add(tnSex);TreeNode tnNan = new TreeNode("男");tnSex.Nodes.Add(tnNan);TreeNode tnNv = new TreeNode("女");tnSex.Nodes.Add(tnNv);dgv.ColumnTreeView = new TreeView[] { tv };//設(shè)置其他屬性dgv.AutoGenerateColumns =false;                                   //不自動(dòng)增加列dgv.RowHeadersVisible =false;                                     //行頭不可見(jiàn)dgv.AllowUserToAddRows = false;dgv.RowTemplate.DefaultCellStyle.Alignment =DataGridViewContentAlignment.MiddleCenter;dgv.ColumnHeadersHeightSizeMode =DataGridViewColumnHeadersHeightSizeMode.DisableResizing;dgv.ColumnDeep = 2;dgv.CellHeight = 25;dgv.ColumnHeadersHeight = 50;dgv.RefreshAtHscroll = true;

三、添加一條數(shù)據(jù)

    dgv.Rows.Add();   //添加行dgv.Rows[0].Cells["DM"].Value= "2003001";dgv.Rows[0].Cells["MC"].Value= "網(wǎng)絡(luò)一班"; ;dgv.Rows[0].Cells["Nan"].Value= "26人";dgv.Rows[0].Cells["Nv"].Value= "18人";

四、合并單元格

headerUnitView1.MergeColumnNames.Add("Column11");//Column11需要合并單元格的列

如果有三層表頭就把ColumnDeep改成3,,依次...

轉(zhuǎn)載于:https://www.cnblogs.com/ss0xt/p/6667185.html

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