zoukankan      html  css  js  c++  java
  • DevExpress控件GridControl使用 z

    设置选中行的背景色、而不改变前景色。

    EnableAppearanceFocusedCell = False, EnableAppearanceFocusedRow = False
    private void gdvMarket_RowCellStyle(object sender, RowCellStyleEventArgs e)
            {
                if (e.RowHandle == gdvMarket.FocusedRowHandle)
                {
                    
                   e.Appearance.BackColor=Color.CadetBlue;
                  ;
                }
            }

    单元格颜色的设置

    //最低价颜色控制
    
                DevExpress.XtraGrid.StyleFormatCondition lowPrice = new DevExpress.XtraGrid.StyleFormatCondition();
                lowPrice.Column = LowPrice;
                lowPrice.Appearance.ForeColor = Color.Red;
                lowPrice.Appearance.Options.UseForeColor = true;
                lowPrice.Condition = DevExpress.XtraGrid.FormatConditionEnum.Expression;
                lowPrice.Expression = "[LowPrice] > [PrevPrice]";
                    this.gdvMarket.FormatConditions.Add(lowPrice);
    
                //涨跌颜色控制
                DevExpress.XtraGrid.StyleFormatCondition range = new DevExpress.XtraGrid.StyleFormatCondition();
                range.Column = Range;
                range.Appearance.ForeColor = Color.Red;
                range.Appearance.Options.UseForeColor = true;
                range.Condition = DevExpress.XtraGrid.FormatConditionEnum.Greater;
                range.Value1 = 0;
                    this.gdvMarket.FormatConditions.Add(range);

    单元格字符格式化方式

    this.gdvMarket.Columns["RangePercent"].DisplayFormat.FormatType = DevExpress.Utils.FormatType.Custom;
                   this.gdvMarket.Columns["RangePercent"].DisplayFormat.FormatString = "{0}%";

    设置列背景色

                this.gdvMarket.Columns["Amount"].AppearanceCell.BackColor = Color.AliceBlue;
                    this.gdvMarket.Columns["Amount"].AppearanceCell.Options.UseBackColor = true;

    GridView右键菜单

    一、添加右键菜单

    1.VS工具箱中的菜单和工具栏找到ContextMenuStrip控件,双击添加。

    2.点击ContextMenuStrip右上方的小三角形,打开编辑项,可以添加菜单项。至于菜单点击事件,这里就不多说了。

    3.选择gridControl(注意这里不是gridView的属性),在属性中可以找到ContextMenuStrip属性,设置成刚添加的ContextMenuStrip

    这样的话,运行起来右击表格就可以看到右键菜单了。

    二、是否可用设置

    在不同情况下,例如选中行的个数以及内容的不同,右键菜单的菜单项是否可用需要作出判断,

    这里需要用到gridViewPopupMenuShowing这个事件。也就是在菜单出现之前用户点击右键之后,来判断一下选择了几行,从而决定菜单项是否可用。

     

    private void gridView_PopupMenuShowing(object sender, DevExpress.XtraGrid.Views.Grid.PopupMenuShowingEventArgs e)
            {
                //获取选择的行数
                int select = gridView.SelectedRowsCount;
                itemOpen.Enabled = false;
                itemDelete.Enabled = false;
                if(select == 1)
                {
                    itemOpen.Enabled = true;
                    itemDelete.Enabled = true;
                }
                else if(select > 1)
                {
                    itemDelete.Enabled =true;
                }
           }

     

    实现拖拽多选

    GridView可以通过Shift键或Ctrl键以及Ctrl+A快捷键实现多选,但是默认不支持拖拽多选,好像也没有设置的方法。这样虽然没什么问题,但是肯定会给用户带来不便。
    首先要设置OptionsSelection中的MultiSelecttrue,也就是允许多选,否则下面的一切都是浮云。

    本文通过以下代码实现拖拉多选的功能,主要是编写MouseDownMouseMoveMouseUp三个函数。

    这里需要注意一下GridHitInfo,这个类可以根据xy坐标获取该点在GridView中的相关信息,例如在哪行哪列哪个单元格内,或者是否在单元格里。

     

     //用于记录,鼠标是否已按下
            bool isMouseDown = false;
    
            //用于鼠标拖动多选,标记是否记录开始行
            bool isSetStartRow = false;
    
            //用于鼠标拖动多选,记录开始行
            private int StartRowHandle = -1;
    
            //用于鼠标拖动多选,记录现在行
            private int CurrentRowHandle = -1;
    
            //用于实现鼠标拖动选择多行功能中的一个方法,对单元格区域进行选中
            private void SelectRows(int startRow, int endRow)
            {
                if (startRow > -1 && endRow > -1)
                {
                    gridView.BeginSelection();
                    gridView.ClearSelection();
                    gridView.SelectRange(startRow, endRow);
                    gridView.EndSelection();
                }
            }
    
            //实现鼠标拖动选择多行 ,鼠标按下事件
            private void gridView_MouseDown(object sender, MouseEventArgs e)
            {
                if (e.Button == MouseButtons.Left)
                {
                    isMouseDown = true;
                }
            }
    
            //实现鼠标拖动选择多行 ,鼠标移动时
            private void gridView_MouseMove(object sender, MouseEventArgs e)
            {
                if (isMouseDown)
                {
                    GridHitInfo info = gridView.CalcHitInfo(e.X, e.Y);
                    //如果鼠标落在单元格里
                    if (info.InRow)
                    {
                        if (!isSetStartRow)
                        {
                            StartRowHandle = info.RowHandle;
                            isSetStartRow = true;
                        }
                        else
                        {
                            //获得当前的单元格
                            int newRowHandle = info.RowHandle;
                            if (CurrentRowHandle != newRowHandle)
                            {
                                CurrentRowHandle = newRowHandle;
                                //选定 区域 单元格
                                SelectRows( StartRowHandle, CurrentRowHandle);
                            }
                        }
                    }
                }
            }
    
            //实现鼠标拖动选择多行 ,鼠标放开时
            private void gridView_MouseUp(object sender, MouseEventArgs e)
            {
                StartRowHandle = -1;
                CurrentRowHandle = -1;
                isMouseDown = false;
                isSetStartRow = false;
            }

     修改列的背景色

    DevExpress.XtraGrid.StyleFormatCondition cn;
    cn = new DevExpress.XtraGrid.StyleFormatCondition(DevExpress.XtraGrid.FormatConditionEnum.Equal, GridView1.Columns["列名"], null, 0);
    cn.Appearance.BackColor = Color.Red;
    GridView1.FormatConditions.Add(cn);
    cn = new DevExpress.XtraGrid.StyleFormatCondition(DevExpress.XtraGrid.FormatConditionEnum.Equal, GridView1.Columns["列名"], null, 1);
    cn.Appearance.BackColor = Color.Green;
    GridView1.FormatConditions.Add(cn);

    这样,这列如果值为0则是红色,为1则是绿色

    去除”Drag a Column Header Here To Group by that Column”

    Views-OptionsView-ShowGroupPanel=False

    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

    显示水平滚动条?

    设置this.gridView.OptionsView.ColumnAutoWidth = false;

    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;

    显示行号?

    this.gridView1.IndicatorWidth = 40;
           //显示行的序号
            private void gridView1_CustomDrawRowIndicator(object sender, RowIndicatorCustomDrawEventArgs e)
            {
                if (e.Info.IsRowIndicator && e.RowHandle>=0)
                {
                    e.Info.DisplayText = (e.RowHandle + 1).ToString();
                }
       }

    让各列头禁止移动?

        设置gridView1.OptionsCustomization.AllowColumnMoving = false;

    让各列头禁止排序?

        设置gridView1.OptionsCustomization.AllowSort = false;

    禁止各列头改变列宽?

        设置gridView1.OptionsCustomization.AllowColumnResizing = false;

    设置单元格自动换行?

    1.ColumnEdit 增加 MemoEdit

    2.AppearanceCell-TextOptions- WordWrap

    3.OptionsView RowAutoHeight

    设置每一列对齐方式?

    View-Appearance-Row-TextOptions-(HAlignment = Center, VAlignment = Center)

    设置行只读属性?

    GridView.OptionsBehavior-Editable(false)

     

     

  • 相关阅读:
    案例7-1.2 插入排序还是归并排序 (25分)
    自动化运维工具——puppet详解(一)
    centos6.8的安装和配置
    ZooKeeper内部原理
    ZooKeeper安装和配置
    zookeeper入门
    shell中uniq与sort -u 两种去重的对别
    tomcat日志文件 访问IP统计
    Mysql常用命令
    linux一键安装php脚本
  • 原文地址:https://www.cnblogs.com/zeroone/p/4311136.html
Copyright © 2011-2022 走看看