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

 

    }

}