DevExpress控件-- Gridcontrol合并表头

写在前面的话：

　　在园子里逛了有一段时间了，一直想写点东西，但苦于自己的水平有限，生怕写出来的东西浪费了读者的时间。楼主有幸参加了公司DevExpress控件的培训，独乐乐不如众乐乐，特附上Demo以飨读者！

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using DevExpress.XtraEditors;

using DevExpress.XtraGrid.Columns;

using DevExpress.XtraGrid.Views.Base;

using DevExpress.XtraGrid.Views.BandedGrid;

using DevExpress.XtraEditors.Repository;

namespace XtraGridDemo1

{

public partial class XtraForm1 : DevExpress.XtraEditors.XtraForm

{

public XtraForm1()

{

InitializeComponent();

//首先拖到窗体上一个GridControl，在表格上点击“Click here to change view”链接，在弹出菜单中选择“convert to”-->“AdvBandedGridView”。

InitGrid();

}

private void XtraForm1_Load(object sender, EventArgs e)

{

}

///初始化表格

private void InitGrid()

{

// advBandedGridView1是表格上的默认视图，注意这里声明的是：BandedGridView

BandedGridView view = advBandedGridView1 as BandedGridView;

view.BeginUpdate(); //开始视图的编辑，防止触发其他事件

view.BeginDataUpdate(); //开始数据的编辑

view.Bands.Clear();

//修改附加选项

view.OptionsView.ShowColumnHeaders = false;                         //因为有Band列了，所以把ColumnHeader隐藏

view.OptionsView.ShowGroupPanel = false;                            //如果没必要分组，就把它去掉

view.OptionsView.EnableAppearanceEvenRow = false;                   //是否启用偶数行外观

view.OptionsView.EnableAppearanceOddRow = true;                     //是否启用奇数行外观

view.OptionsView.ShowFilterPanelMode = ShowFilterPanelMode.Never;   //是否显示过滤面板

view.OptionsCustomization.AllowColumnMoving = false;                //是否允许移动列

view.OptionsCustomization.AllowColumnResizing = false;              //是否允许调整列宽

view.OptionsCustomization.AllowGroup = false;                       //是否允许分组

view.OptionsCustomization.AllowFilter = false;                      //是否允许过滤

view.OptionsCustomization.AllowSort = true;                         //是否允许排序

view.OptionsSelection.EnableAppearanceFocusedCell = true;           //是否焦点显示选中的单元格

view.OptionsBehavior.Editable = false;                             //是否允许用户编辑单元格

//添加列标题

GridBand bandID = view.Bands.AddBand("ID");

bandID.Visible = false; //隐藏ID列

GridBand bandName = view.Bands.AddBand("姓名");

GridBand bandSex = view.Bands.AddBand("性别");

GridBand bandBirth = view.Bands.AddBand("出生日期");

GridBand bandScore = view.Bands.AddBand("分数");

GridBand bandMath = bandScore.Children.AddBand("数学");

GridBand bandChinese = bandScore.Children.AddBand("语文");

GridBand bandEnglish = bandScore.Children.AddBand("英语");

GridBand bandSubTotal = bandScore.Children.AddBand("小计");

GridBand bandRemark = view.Bands.AddBand("备注");

//列标题对齐方式

bandName.AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;

bandSex.AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;

bandBirth.AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;

bandScore.AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;

bandMath.AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;

bandChinese.AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;

bandEnglish.AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;

bandSubTotal.AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;

bandRemark.AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;

//模拟几个数据

List<Record> listDataSource = new List<Record>();

listDataSource.Add(new Record(1, "张三", "男", Convert.ToDateTime("1989-5-6"), 115.5f, 101, 96, ""));

listDataSource.Add(new Record(2, "李四", "女", Convert.ToDateTime("1987-12-23"), 92, 85, 87, ""));

listDataSource.Add(new Record(3, "王五", "女", Convert.ToDateTime("1990-2-11"), 88, 69, 41.5f, ""));

listDataSource.Add(new Record(4, "赵六", "男", Convert.ToDateTime("1988-9-1"), 119, 108, 110, "备注行"));

//绑定数据源并显示

gridControl1.DataSource = listDataSource;

gridControl1.MainView.PopulateColumns();

//[小计]这一列因为没绑定数据源，所以需要手动添加

//(有点复杂，慢慢看吧)

string[] fieldNames = new string[] { "SubTotal" };

GridColumn column;   //声明单列

column = view.Columns.AddField(fieldNames[0]);  //添加一个数据字段

column.VisibleIndex = view.Columns.Count - 1;  //设置该列在编辑视图时的显示位置(倒数第二列)

column.UnboundType = DevExpress.Data.UnboundColumnType.Decimal;

column.OptionsColumn.AllowEdit = false;     //此列不可编辑

column.Visible = true;

view.Columns.Add(column);   //视图中添加一列

//绑定事件，当[分数]改变时[小计]也跟着变

//(好像只有在绑定事件里才能改变该单元格数值，直接修改无效)

view.CustomUnboundColumnData += new

DevExpress.XtraGrid.Views.Base.CustomColumnDataEventHandler(advBandedGridView1_CustomUnboundColumnData);

//[性别]列绑定ComboBox

RepositoryItemComboBox riCombo = new RepositoryItemComboBox();

riCombo.Items.AddRange(new string[] { "男", "女" });

gridControl1.RepositoryItems.Add(riCombo);

view.Columns["Sex"].ColumnEdit = riCombo;

//[出生年月]列绑定Date

RepositoryItemDateEdit riDate = new RepositoryItemDateEdit();

gridControl1.RepositoryItems.Add(riDate);

view.Columns["Birth"].ColumnEdit = riDate;

//[分数]列绑定SpinEdit

RepositoryItemSpinEdit riSpin = new RepositoryItemSpinEdit();

gridControl1.RepositoryItems.Add(riSpin);

view.Columns["Math"].ColumnEdit = riSpin;

view.Columns["Chinese"].ColumnEdit = riSpin;

view.Columns["English"].ColumnEdit = riSpin;

//[备注]列绑定MemoExEdit

RepositoryItemMemoExEdit riMemoEx = new RepositoryItemMemoExEdit();

gridControl1.RepositoryItems.Add(riMemoEx);

view.Columns["Remark"].ColumnEdit = riMemoEx;

//小计列添加汇总

view.OptionsView.ShowFooter = true;     //显示表格页脚

view.Columns["SubTotal"].SummaryItem.FieldName = "SubTotal";

view.Columns["SubTotal"].SummaryItem.DisplayFormat = "{0:f2}";

view.Columns["SubTotal"].SummaryItem.SummaryType = DevExpress.Data.SummaryItemType.Average;

//将标题列和数据列对应

view.Columns["ID"].OwnerBand = bandID;

view.Columns["Name"].OwnerBand = bandName;

view.Columns["Sex"].OwnerBand = bandSex;

view.Columns["Birth"].OwnerBand = bandBirth;

view.Columns["Math"].OwnerBand = bandMath;

view.Columns["Chinese"].OwnerBand = bandChinese;

view.Columns["English"].OwnerBand = bandEnglish;

view.Columns["SubTotal"].OwnerBand = bandSubTotal;

view.Columns["Remark"].OwnerBand = bandRemark;

view.EndDataUpdate();//结束数据的编辑

view.EndUpdate();   //结束视图的编辑

}

// 计算小计

private float calcSubTotal(float math, float chinese, float english)

{

return math + chinese + english;

}

private void advBandedGridView1_CustomUnboundColumnData(object sender, CustomColumnDataEventArgs e)

{

ColumnView colView = sender as ColumnView;

if (e.Column.FieldName == "SubTotal" && e.IsGetData) e.Value = calcSubTotal(

Convert.ToSingle(colView.GetRowCellValue(e.RowHandle, colView.Columns["Math"])),

Convert.ToSingle(colView.GetRowCellValue(e.RowHandle, colView.Columns["Chinese"])),

Convert.ToSingle(colView.GetRowCellValue(e.RowHandle, colView.Columns["English"])));

}

#region 运行时绑定到实现Ilist接口的数据源

public class Record

{

int id;

DateTime birth;

string name, sex, remark;

float math, chinese, english;

public Record(int id, string name, string sex, DateTime birth, float math, float chinese, float english, string remark)

{

this.id = id;

this.name = name;

this.sex = sex;

this.birth = birth;

this.math = math;

this.chinese = chinese;

this.english = english;

this.remark = remark;

}

public int ID { get { return id; } }

public string Name

{

get { return name; }

set { name = value; }

}

public string Sex

{

get { return sex; }

set { sex = value; }

}

public DateTime Birth

{

get { return birth; }

set { birth = value; }

}

public float Math

{

get { return math; }

set { math = value; }

}

public float Chinese

{

get { return chinese; }

set { chinese = value; }

}

public float English

{

get { return english; }

set { english = value; }

}

public string Remark

{

get { return remark; }

set { remark = value; }

}

}

#endregion

}

}