• 转载--DEV GridControl 的一些基本操作


    1、 如何解决单击记录整行选中的问题

    View->OptionsBehavior->EditorShowMode 设置为:Click

     

    2、 如何新增一条记录

    (1)、gridView.AddNewRow()

    (2)、实现 gridView_InitNewRow 事件

     

    3、如何解决 GridControl 记录能获取而没有显示出来的问题

    gridView.populateColumns();

     

    4、如何让行只能选择而不能编辑(或编辑某一单元格)

    (1)、View->OptionsBehavior->EditorShowMode 设置为:Click

    (2)、View->OptionsBehavior->Editable 设置为:false

     

    5、如何禁用 GridControl 中单击列弹出右键菜单

    设置 Run Design->OptionsMenu->EnableColumnMenu 设置为:false

     

    6、如何隐藏 GridControl 的 GroupPanel 表头

    设置 Run Design->OptionsView->ShowGroupPanel 设置为:false

    7、如何禁用 GridControl 中列头的过滤器 过滤器如下图所示:     

    设置 Run Design->OptionsCustomization->AllowFilter 设置为:false

     

    8、如何在查询得到 0 条记录时显示自定义的字符提示/显示 如图所示:

    方法如下:

    //When no Records Are Being Displayed

    private void gridView1_CustomDrawEmptyForeground(object sender, CustomDrawEventArgs e)

    {

     //方法一(此方法为GridView设置了数据源绑定时,可用)

     ColumnView columnView = sender as ColumnView;

    BindingSource bindingSource = this.gridView1.DataSource as BindingSource;

    if(bindingSource.Count == 0)

    {

    string str = "没有查询到你所想要的数据!";

    Font f = new Font("宋体", 10, FontStyle.Bold);

    Rectangle r = new Rectangle(e.Bounds.Top + 5, e.Bounds.Left + 5, e.Bounds.Right - 5, e.Bounds.Height - 5);

    e.Graphics.DrawString(str, f, Brushes.Black, r); }

    //方法二(此方法为GridView没有设置数据源绑定时,使用,一般使用此种方 法)

    if (this._flag)

     { if (this.gridView1.RowCount == 0)

     { string str = "没有查询到你所想要的数据!"; Font f = new Font("宋体", 10, FontStyle.Bold);

    Rectangle r = new Rectangle(e.Bounds.Left + 5, e.Bounds.Top + 5, e.Bounds.Width - 5, e.Bounds.Height - 5);

    e.Graphics.DrawString(str, f, Brushes.Black, r); } } }

     

    9、如何显示水平滚动条?或

    设置 this.gridView.OptionsView.ColumnAutoWidth = false;

     

    .....列表宽度自适应内容

    gridview1.BestFitColumns();

     

    10、如何定位到第一条数据/记录?

    设置 this.gridView.MoveFirst()

     

    11、如何定位到下一条数据/记录?
    设置 this.gridView.MoveNext()

     

    12、如何定位到最后一条数据/记录?

    设置 this.gridView.MoveLast()

     

    13、设置成一次选择一行,并且不能被编辑

    this.gridView1.FocusRectStyle = DevExpress.XtraGrid.Views.Grid.DrawFocusRectStyle.RowFocus;

     this.gridView1.OptionsBehavior.Editable = false;

    this.gridView1.OptionsSelection.EnableAppearanceFocusedCell = false;

     

     14、如何显示行号?
      private void gvPayList_CustomDrawRowIndicator(object sender, DevExpress.XtraGrid.Views.Grid.RowIndicatorCustomDrawEventArgs e)
            {
                e.Appearance.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Far;
                if (e.Info.IsRowIndicator)
                {
                    if (e.RowHandle >= 0)
                    {
                        e.Info.DisplayText = (e.RowHandle + 1).ToString();
                    }
                    else if (e.RowHandle < 0 && e.RowHandle > -1000)
                    {
                        e.Info.Appearance.BackColor = System.Drawing.Color.AntiqueWhite;
                        e.Info.DisplayText = "G" + e.RowHandle.ToString();
                    }
                }
            }

     

    15、如何让各列头禁止移动?

    设置 gridView1.OptionsCustomization.AllowColumnMoving = false;

    16、如何让各列头禁止排序?

    设置 gridView1.OptionsCustomization.AllowSort = false;

    17、如何禁止各列头改变列宽?

    设置 gridView1.OptionsCustomization.AllowColumnResizing = false;

     

    18.拖动滚动条时固定某一列

    设置Columns,选择要固定的列。设置Fixed属性,可以选择:固定在左边、固定在右边、不固定。

    19.获取选定行,指定列单元格的内容

          return gridView1.GetRowCellValue(pRows[0], ColumName).ToString ();

    20.分组显示

    OptionsView>OptionsBehavior>AutoExpandAllGroups = True
    选择要分组的列,将GroupIndex属性设置为0

    21.格式化数据

           private void gvList_ValidatingEditor(object sender, DevExpress.XtraEditors.Controls.BaseContainerValidateEditorEventArgs e)
            {
                if (this.gvList.FocusedColumn.FieldName == "passQty")
                {
                    string passQty = e.Value.ToString().Trim();
                    int receiveQty = orderDetailList[this.gvList.FocusedRowHandle].qty;
                    if (!JXType.IsIntBigThanZero(passQty))
                    {
                        e.Valid = false;
                        e.ErrorText = "合格数量必须为大于等于0小于等于接货数量的整数!";
                    }
                    else
                    {
                        if (int.Parse(passQty) > receiveQty)
                        {
                            e.Valid = false;
                            e.ErrorText = "合格数量必须为大于0小于等于接货数量的整数!";
                        }
                    }
                }

    }

     

    22.合并表头

       ///初始化表格

    using DevExpress.XtraGrid.Columns;
    using DevExpress.XtraGrid.Views.Base;
    using DevExpress.XtraGrid.Views.BandedGrid;
    using DevExpress.XtraEditors.Repository;
            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();

                view.OptionsView.ShowColumnHeaders = false;                         //因为有Band列了,所以把ColumnHeader隐藏
                //添加列标题
          //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");

                bandFile.AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;//这是合并表头居中显示
                view.EndDataUpdate();//结束数据的编辑
                view.EndUpdate();   //结束视图的编辑
            }

    具体可看 

    dev gridcontrol 合并表头

    23.   //动态添加列
                DevExpress.XtraGrid.Columns.GridColumn Col1 = new DevExpress.XtraGrid.Columns.GridColumn();
                Col1.FieldName = "name";
                Col1.Caption = "名字";
                Col1.Visible = false;
                Col1.VisibleIndex = gvCountry.Columns.Count;
                gvCountry.Columns.Add(Col1);

     

    24。设置自动增加的行号

      private void gridview_CustomDrawRowIndicator(object sender,                            DevExpress.XtraGrid.Views.Grid.RowIndicatorCustomDrawEventArgs e)
        {

    e.Appearance.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Far;
                if (e.Info.IsRowIndicator)
                {
                    if (e.RowHandle >= 0)
                    {
                        e.Info.DisplayText = (e.RowHandle + 1).ToString();
                    }
                    else if (e.RowHandle < 0 && e.RowHandle > -1000)
                    {
                        e.Info.Appearance.BackColor = System.Drawing.Color.AntiqueWhite;
                        e.Info.DisplayText = "G" + e.RowHandle.ToString();
                    }
                }

    25.特效:gridcontrol中有5种view 型式,普通的是gridview,然后分别为cardview、BandedView、Advanced BandedView、LayoutView;共5种。

      1)、view组中把OptionView下的viewmode 设置成“Carousel”就达到这种“旋转木马”式的gridcontrol view 特效了
      2)、layoutView1.OptionsCarouselMode.PitchAngle 这个属性决定“旋转木马”的pitch angle 螺距角; 螺旋角; 螺旋升角; 俯仰角; 倾角; 节锥半角 
      3)、Roll Angle 属性决定着 倾侧角度
      4)、指定数据源,显示数据:
      //显示数据
            private void showData(List<Employee > list)
            {
                DataTable dt = new DataTable("OneEmployee");
                dt.Columns.Add("Caption", System.Type.GetType("System.String"));
                dt.Columns.Add("Department", System.Type.GetType("System.String"));
                dt.Columns.Add("PhotoName", System.Type.GetType("System.Byte[]"));

                for (int i = 0; i < list.Count; i++)
                {
                    DataRow dr = dt.NewRow();
                    dr["Caption"] = list[i].Name;
                    dr["Department"] = list[i].Department;
                    string imagePath = @"D:C#photos" + list[i].PhotoPath;
                    dr["PhotoName"] = getImageByte(imagePath);
                    dt.Rows.Add(dr);
                }
                gridControl1.DataSource = dt;
            }

            //返回图片的字节流byte[]
            private byte[] getImageByte(string imagePath)
            {
                FileStream files = new FileStream(imagePath, FileMode.Open);
                byte[] imgByte = new byte [files.Length ];
                files.Read(imgByte, 0, imgByte.Length);
                files.Close();
                return imgByte;
            }

     

    26.检查数据的有效性

      在gridview的ValidateRow事件中加入检查代码:
      #region 检查数据
      private void gridView1_ValidateRow(object sender, ValidateRowEventArgs e)
      {
      GridView view = sender as GridView;
      view.ClearColumnErrors();

      if (view.GetRowCellValue(e.RowHandle, "ReceiveDate") == DBNull.Value)
      {
      e.Valid = false;
      view.SetColumnError(view.Columns["ReceiveDate"], "必须指定日期");
      }

      }

     

    27.设某一列文字和标题局中显示                  
       gridView1.Columns[0].AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;
       gridView1.Columns[0].AppearanceCell.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;

     

    28.列表过滤条件多选

    列名.OptionsFilter.FilterPopupMode= DevExpress.XtraGrid.Columns.FilterPopupMode.CheckedList

     

    29.隔行换色的方法

     

     this.gridView1.Appearance.OddRow.BackColor = Color.White;  // 设置奇数行颜色 // 默认也是白色 可以省略 
    this.gridView1.OptionsView.EnableAppearanceOddRow = true;   // 使能 // 和和上面绑定 同时使用有效 
    this.gridView1.Appearance.EvenRow.BackColor = Color.WhiteSmoke; // 设置偶数行颜色 
    this.gridView1.OptionsView.EnableAppearanceEvenRow = true;   // 使能 // 和和上面绑定 同时使用有效

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  • 原文地址:https://www.cnblogs.com/Ares-blog/p/3293072.html
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