GridControl 使用技巧

蔚落 2022-08-06 01:20 178阅读 0赞

1. 让列宽保持不变，当列特别多的时候出现滚动条  设置 View 中的OptionsView 中的 ColumnAutoWidth = False

2.使某一列出现如下拉框，复选框等效果：设置那一列的ColumnEidt

3.要对单元格的输入进行验证，使用gridview的ValidatingEditor事件

//输入验证
            private void gridView1_ValidatingEditor(object sender, BaseContainerValidateEditorEventArgs e)
            {
                GridView gv = sender as GridView;
                List<string> timeColns = new List<string> { "PEDGRNTM", "PEDREDTM", "MINGRNTM", "GRNEXTENDTM", "MAXGRN1TM", 
                                            "MAXGRN2TM", "FIXGRNTM"};
                if (timeColns.Contains(gv.FocusedColumn.FieldName))
                {
                    int inputValue;
                    if (!(int.TryParse(e.Value.ToString(), out inputValue) && inputValue >= 0 && inputValue <= 255))
                    {
                        e.Valid = false;
                        e.ErrorText = "必须是0到255的整数";
                    }
                }
           }

4.要对单元格显示tooltip 需要先添加一个ToolTipController到窗口中，然后实现其GetActiveObjectInfo事件

//单元格显示tooltip
            private void toolTipController1_GetActiveObjectInfo(object sender, DevExpress.Utils.ToolTipControllerGetActiveObjectInfoEventArgs e)
            {
                if (e.SelectedControl != gridControl1)
                    return;
                ToolTipControlInfo info = null;
                //Get the view at the current mouse position
                GridView view = gridControl1.GetViewAt(e.ControlMousePosition) as GridView;
                if (view == null) return;
                //Get the view's element information that resides at the current position
                GridHitInfo hitInfo = view.CalcHitInfo(e.ControlMousePosition);
    
                if (hitInfo.HitTest == GridHitTest.RowCell)
                {
                    //An object that uniquely identifies a row indicator cell
                    object o = hitInfo.RowHandle.ToString() + hitInfo.Column.FieldName;
                    if (hitInfo.Column.FieldName == "PHASEKIND")
                    {
                        string text = "1固定2待定3弹性4关键5跟随6行人7自行车8机动车";
                        info = new ToolTipControlInfo(o, text, "输入含义");
                    }
                }
                //Supply tooltip information if applicable, otherwise preserve default tooltip (if any)
                if (info != null)
                    e.Info = info;
            }

4，设置单元格的显示样式

实现gridview 的CustomColumnDisplayText事件

//修改显示样式
            private void gridView1_CustomColumnDisplayText(object sender, DevExpress.XtraGrid.Views.Base.CustomColumnDisplayTextEventArgs e)
            {
                List<string> boolColns = new List<string> { "NO_DETCT_PHS_TOGETHER", "PED_VEH_TOGETHER", "UNDETERMINED_PHS_APPEAR", "ROAD_SECTION_PED"
                                            , "INUSING"};
                if (boolColns.Contains(e.Column.FieldName))
                {
                    switch (e.Value.ToString().Trim())
                    {
                        case "1":
                            e.DisplayText = "是";
                            break;
                        case "0":
                            e.DisplayText = "否";
                            break;
                        default:
                            break;
                    }
                }
            }