实现DevExpress.XtraGrid.GridControl控件表头的自定义绘制以及数据加载：
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Data;
using System.Drawing;
using DevExpress.XtraGrid.Views.BandedGrid;
using System.Drawing.Drawing2D;
using DevExpress.Utils.Drawing;
using UIControls;
namespace nxkj.fc.fm
{
/// <summary>
/// 该类实现树形接口目录以及型号的数据提供
/// </summary>
public class TreeViewTableHead
{
public enum NodeType
{
目录=0,
型号=1
}
public enum TreeType
{
标准 = 0,
设计 = 1,
复测=2,
复测400V=3
}
public enum StringDerection
{
水平 = 0,
垂直 = 1
}
public enum ModelType
{
杆位编号=4,
值类型=5,
云网南网=6,
杆型名称=7,
接地棒=1,
交叉跨=2,
导线=3,
默认=0
}
STDTYPE tp;
System.Data.DataTable tableAllCatalog;
System.Data.DataTable tableAllModels;
TreeType viewChecktype;
public TreeViewTableHead(STDTYPE stdtype, TreeType ctype)
{
viewChecktype = ctype;
tp = stdtype;
tableAllCatalog = new System.Data.DataTable();
string sql = "select * from M_Catalog" + " where CatalogType like '%" + ((int)tp).ToString() + "%'";
tableAllCatalog = nxkj.db.dataprovider.ProviderBase.QueryTableData(sql);
sql = "select * from MaterialModels where MaterialModelType like '%" + ((int)tp).ToString() + "%'"; ;
tableAllModels = nxkj.db.dataprovider.ProviderBase.QueryTableData(sql);
}
/// <summary>
/// 返回树形结构数据
/// </summary>
public System.Windows.Forms.TreeView Head
{
get
{
TreeView viewhead = new TreeView();
LoadConst(viewhead.Nodes, viewChecktype);
if (tableAllCatalog == null || tableAllModels == null)
return viewhead;
string filter = "ParentID='"+Guid.Empty.ToString()+"'";
var rows = tableAllCatalog.Select(filter);
foreach (DataRow item in rows)
{
TreeNode node = new TreeNode();
NodeInfo n = new NodeInfo(
item["CatalogName"].ToString().Trim(),
item["M_Catalog_ID"].ToString().Trim(),
item["ParentID"].ToString().Trim(),
NodeType.目录
);
node.Tag = n;
node.Text = n.Title;
viewhead.Nodes.Add(node);
LoadChild(node);
}
return viewhead;
}
}
void LoadChild(TreeNode node)
{
string filter = "ParentID='" + (node.Tag as NodeInfo).NodeID + "'";
var rows = tableAllCatalog.Select(filter);
if (rows.Length == 0)
{
LoadModels(node);
return;
}
foreach (DataRow item in rows)
{
TreeNode nodesub = new TreeNode();
nodesub.Text = item["CatalogName"].ToString().Trim();
NodeInfo n = new NodeInfo(
item["CatalogName"].ToString().Trim(),
item["M_Catalog_ID"].ToString().Trim(),
item["ParentID"].ToString().Trim(),
NodeType.目录
);
nodesub.Tag = n;
nodesub.Text = n.Title;
node.Nodes.Add(nodesub);
LoadChild(nodesub);
}
}
void LoadModels(TreeNode node)
{
string filter = "M_Catalog_ID='" + (node.Tag as NodeInfo).NodeID + "'";
var rows = tableAllModels.Select(filter);
foreach (DataRow item in rows)
{
TreeNode nodesub = new TreeNode();
NodeInfo n = new NodeInfo(
item["MaterialModel"].ToString().Trim(),
item["MaterialModelID"].ToString().Trim(),
item["M_Catalog_ID"].ToString().Trim(),
NodeType.型号
);
int type = 0;
if (int.TryParse(item["XhLx"].ToString(), out type))
{
n.Mtype = (TreeViewTableHead.ModelType)type;
}
else
{
n.Mtype = ModelType.默认;
}
n.WordDeretion = StringDerection.垂直;
nodesub.Tag = n;
nodesub.Text = n.Title;
node.Nodes.Add(nodesub);
if (modelList.ContainsKey(n.Mtype))
{
modelList[n.Mtype].Add(n);
}
else
{
List<NodeInfo> list = new List<NodeInfo>();
list.Add(n);
modelList.Add(n.Mtype, list);
}
if (nodesub.Level > deep)
deep = nodesub.Level;
}
}
Dictionary<TreeViewTableHead.ModelType, List<NodeInfo>> modelList = new Dictionary<ModelType, List<NodeInfo>>();
/// <summary>
/// 返回各个类型的型号类表
/// </summary>
public Dictionary<TreeViewTableHead.ModelType, List<NodeInfo>> Models
{
get
{
if (tableAllCatalog == null || tableAllModels == null)
return new Dictionary<ModelType, List<NodeInfo>>();
return modelList;
}
}
/// <summary>
/// 加载常规表头
/// </summary>
/// <param name="nodes"></param>
/// <param name="tpconst"></param>
void LoadConst(TreeNodeCollection nodes, TreeType tpconst)
{
switch (tpconst)
{
case TreeType.标准:
LoadConstNode("云网|南网", ModelType.云网南网, nodes);
LoadConstNode("杆型名称", ModelType.杆型名称, nodes);
break;
case TreeType.复测:
LoadConstNode("杆位编号", ModelType.杆位编号, nodes);
LoadConstNode("值类型", ModelType.值类型, nodes);
LoadConstNode("云网|南网", ModelType.云网南网, nodes);
LoadConstNode("杆型名称", ModelType.杆型名称, nodes);
break;
case TreeType.设计:
LoadConstNode("杆位编号", ModelType.杆位编号, nodes);
LoadConstNode("值类型", ModelType.值类型, nodes);
LoadConstNode("云网|南网", ModelType.云网南网, nodes);
LoadConstNode("杆型名称", ModelType.杆型名称, nodes);
break;
case TreeType.复测400V:
LoadConstNode("杆位编号", ModelType.杆位编号, nodes);
LoadConstNode("接地棒", ModelType.接地棒, nodes);
LoadConstNode("值类型", ModelType.值类型, nodes);
LoadConstNode("云网|南网", ModelType.云网南网, nodes);
LoadConstNode("杆型名称", ModelType.杆型名称, nodes);
break;
}
}
void LoadConstNode(string title,TreeViewTableHead.ModelType _tp,TreeNodeCollection nodes)
{
TreeNode node = new TreeNode();
NodeInfo n = new NodeInfo(
title, "", "", NodeType.目录
);
n.Mtype = _tp;
node.Tag = n;
node.Text = n.Title;
nodes.Add(node);
if (modelList.ContainsKey(n.Mtype))
{
modelList[n.Mtype].Add(n);
}
else
{
List<NodeInfo> list = new List<NodeInfo>();
list.Add(n);
modelList.Add(n.Mtype, list);
}
}
int deep = 0;
public int Deep
{
get
{
return deep;
}
}
BandedGridView view;
DevExpress.XtraGrid.GridControl Grid;
public void BindToGrid(DevExpress.XtraGrid.GridControl grid)
{
var info = Head;
Grid = grid;
view = grid.DefaultView as BandedGridView;
DataTable tb = new DataTable();
foreach (var item in Models[ModelType.默认])
{
tb.Columns.Add(item.NodeID);
}
for (int i = 0; i < 100; i++)
{
DataRow r = tb.NewRow();
for (int j = 0; j < tb.Columns.Count; j++)
{
r[j] = j.ToString();
}
tb.Rows.Add(r);
}
view.CustomDrawBandHeader += new BandHeaderCustomDrawEventHandler(view_CustomDrawBandHeader);
view.BeginUpdate();
view.BeginDataUpdate();
view.Bands.Clear();
foreach (TreeNode item in Head.Nodes)
{
GridBand band = new GridBand();
NodeInfo b = item.Tag as NodeInfo;
band.Caption = b.Title;
band.Tag = b;
view.Bands.Add(band);
LoadNode(item, band);
}
view.EndDataUpdate();
view.EndUpdate();
grid.DataSource = tb;
}
void LoadNode(TreeNode node, GridBand b)
{
foreach (TreeNode item in node.Nodes)
{
BandedGridColumn col = null;
GridBand band = new GridBand();
NodeInfo n = item.Tag as NodeInfo;
band.Caption = n.Title;
band.Tag = n;
//加载列
if (item.Nodes.Count == 0 && n.Ntype == TreeViewTableHead.NodeType.型号)
{
col = new BandedGridColumn();
col.Caption = n.Title;
col.FieldName = n.NodeID;
col.Visible = true;
col.Width = 30;
view.Columns.Add(col);
band.Columns.Add(col);
}
if (n.WordDeretion == TreeViewTableHead.StringDerection.垂直)
{
band.Width = 30;
if (item.Text == "名称")
{
}
if (item.Parent.Nodes.Count > 1)
{
try
{
Graphics g = Graphics.FromHwnd(Grid.Handle);
g.PageUnit = GraphicsUnit.Pixel;
g.SmoothingMode = SmoothingMode.HighQuality;
StringFormat sf = new StringFormat();
sf.FormatFlags = StringFormatFlags.MeasureTrailingSpaces;
SizeF sizeF = g.MeasureString(item.Parent.Text,Grid.Font, 500, sf);
if (item.Parent.Nodes.Count * 30 < (sizeF.Width + 10))
{
band.Width = (int)(sizeF.Width / item.Parent.Nodes.Count) + 10;
if (item.Nodes.Count == 0 && n.Ntype == TreeViewTableHead.NodeType.型号)
{
col.Width = (int)(sizeF.Width / item.Parent.Nodes.Count) + 10;
}
}
}
catch
{
}
}
}
else if (item.Nodes.Count == 1)
{
n.WordDeretion = TreeViewTableHead.StringDerection.垂直;
}
b.Children.Add(band);
if (item.Nodes.Count == 0 && item.Parent.Nodes.Count > 1)
{
band.RowCount = (Deep - item.Parent.Level) * 2 + 1;
}
else if (n.Ntype == TreeViewTableHead.NodeType.目录 && item.Nodes.Count == 1)
{
n.WordDeretion = TreeViewTableHead.StringDerection.垂直;
if (n.Title.Length > 3)
{
band.RowCount = n.Title.Length - 1;
}
else
{
band.RowCount = 3;
}
}
LoadNode(item, band);
}
}
void view_CustomDrawBandHeader(object sender, BandHeaderCustomDrawEventArgs e)
{
NodeInfo node = e.Band.Tag as NodeInfo;
//A brush to fill the band's background in the normal state
Brush brush = new LinearGradientBrush(e.Bounds, Color.White, Color.Silver, 100);
//A brush to fill the background when the band is pressed
Brush brushPressed = new LinearGradientBrush(e.Bounds,
Color.WhiteSmoke, Color.Gray, 70);
Rectangle r = e.Bounds;
//Draw a 3D border
ControlPaint.DrawBorder3D(e.Graphics, r, (e.Info.State == ObjectState.Pressed ?
Border3DStyle.SunkenOuter : Border3DStyle.RaisedInner));
r.Inflate(-1, -1);
//Fill the background
e.Graphics.FillRectangle(brush, r);
r.Inflate(-2, 0);
//Draw the band's caption with a shadowed effect
StringFormat f = new StringFormat();
f.LineAlignment = StringAlignment.Center;
f.FormatFlags |= StringFormatFlags.NoWrap;
if (node.WordDeretion == TreeViewTableHead.StringDerection.垂直)
{
f.FormatFlags |= StringFormatFlags.DirectionVertical;
f.Alignment = StringAlignment.Near;
}
else
{
f.Alignment = StringAlignment.Center;
}
// f.FormatFlags |= StringFormatFlags.DisplayFormatControl;
// f.FormatFlags = StringFormatFlags.NoWrap;
// e.Appearance.DrawString(e.Cache, e.Band.Caption, new Rectangle(r.X + 1, r.Y + 1,
// r.Width, r.Height), Brushes.White,f);
// e.Appearance.DrawString(e.Cache, e.Band.Caption, r, Brushes.Black,f);
//Prevent default painting
e.Graphics.DrawString(node.Title,e.Band.View.GridControl.Font, System.Drawing.Brushes.Black, r, f);
e.Handled = true;
}
}
/// <summary>
/// 节点信息
/// </summary>
public class NodeInfo
{
public NodeInfo(string _title,string _nodeID,string _parentID,TreeViewTableHead.NodeType _ntype)
{
Title = _title.Replace("\r\n","");
NodeID = _nodeID;
ParentID = _parentID;
Ntype = _ntype;
}
/// <summary>
/// 标题
/// </summary>
public string Title { get; set; }
/// <summary>
/// 节点编号
/// </summary>
public string NodeID { get; set; }
/// <summary>
/// 父级编号
/// </summary>
public string ParentID { get; set; }
/// <summary>
/// 目录类型
/// </summary>
public TreeViewTableHead.NodeType Ntype
{
get;
set;
}
public override string ToString()
{
return Title;
}
/// <summary>
/// 列类型
/// </summary>
public TreeViewTableHead.ModelType Mtype
{
get;
set;
}
/// <summary>
/// 文字方向
/// </summary>
public TreeViewTableHead.StringDerection WordDeretion
{
get;
set;
}
}
}