Sanya-ips/ipslib/Ips.Library.DxpLib/Extensions/GridControlExtensions.cs

using DevExpress.XtraGrid.Columns;
using DevExpress.XtraGrid.Views.Grid;
using Ips.Library.Basic;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Ips.Library.DxpLib
{
    public static class GridControlExtensions
    {
        public static void UseDefaultSettings(this GridView view, GridViewDefaultSetting setting = null)
        {
            if (setting == null) setting = new GridViewDefaultSetting();
            if (setting.Editable.HasValue)
            {
                view.OptionsBehavior.Editable = setting.Editable.Value;
                view.OptionsBehavior.EditorShowMode = DevExpress.Utils.EditorShowMode.MouseDownFocused;
            }

            if (setting.MultiSelect.HasValue)
                view.OptionsSelection.MultiSelect = setting.MultiSelect.Value;
            if (setting.RowAlignLeft.HasValue)
            {
                view.Appearance.Row.Options.UseTextOptions = true;
                view.Appearance.Row.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Near;
            }
            if (setting.DefaultEmptyDisplayText == true)
                view.CustomColumnDisplayText += View_CustomColumnDisplayText;
            if (setting.ShowRowNum)
                ShowRowNumber(view);

        }

        private static void View_CustomColumnDisplayText(object sender, DevExpress.XtraGrid.Views.Base.CustomColumnDisplayTextEventArgs e)
        {
            if (e.DisplayText.IsNullOrWhitespace())
            {
                e.DisplayText = "--";
            }
        }

        public static void ShowRowNumber(this GridView gridView)
        {
            gridView.CustomDrawRowIndicator += (sender, e) =>
            {
                var gv = sender as GridView;
                if (gv == null || !e.Info.IsRowIndicator) return;
                e.Info.DisplayText = $"{e.RowHandle + 1}";
            };
            gridView.RowCountChanged += (sender, e) =>
            {
                var gv = sender as GridView;
                if (gv == null) return;
                gv.IndicatorWidth = gv.RowCount.ToString().Length * 12 + 10;
            };
        }

        public static T[] GetSelectRow<T>(this GridView gridView)
        {
            var selHandles = gridView.GetSelectedRows();
            var results = new T[selHandles.Length];
            for (int i = 0; i < results.Length; i++)
            {
                var result = (T)gridView.GetRow(selHandles[i]);
                results[i] = result;
            }
            return results;
        }

        public static T[] GetSelectRowCellValue<T>(this GridView gridView, GridColumn column)
        {
            var rowHandles = gridView.GetSelectedRows();
            T[] vals = new T[rowHandles.Length];
            for (int i = 0; i < rowHandles.Length; i++)
            {
                var val = (T)gridView.GetRowCellValue(rowHandles[i], column);
                vals[i] = val;
            }
            return vals;
        }

        public static T[] GetSelectRowCellValue<T>(this GridView gridView, string colName)
        {
            var rowHandles = gridView.GetSelectedRows();
            T[] vals = new T[rowHandles.Length];
            for (int i = 0; i < rowHandles.Length; i++)
            {
                var val = (T)gridView.GetRowCellValue(rowHandles[i], colName);
                vals[i] = val;
            }
            return vals;
        }

        public static int[] GetSelectDataIndexes(this GridView gridView)
        {
            var rowHandles = gridView.GetSelectedRows();
            int[] idxs = new int[rowHandles.Length];
            for (int i = 0; i < rowHandles.Length; i++)
            {
                var idx = gridView.GetDataSourceRowIndex(rowHandles[i]);
                idxs[i] = idx;
            }
            return idxs;
        }

        public static T[] GetVisibleRows<T>(this GridView gridView)
        {
            T[] res = new T[gridView.RowCount];
            for (int i = 0; i < gridView.RowCount; i++)
            {
                var rowHandle = gridView.GetVisibleRowHandle(i);
                var model = (T)gridView.GetRow(rowHandle);
                res[i] = model;
            }
            return res;
        }

        public static void RefreshFocuseRow(this GridView gridView)
        {
            if (gridView.FocusedRowHandle >= 0)
            {
                gridView.RefreshRow(gridView.FocusedRowHandle);
            }
        }
    }

    public class GridViewDefaultSetting
    {
        public bool? Editable { get; set; } = false;
        public bool? MultiSelect { get; set; } = true;
        public bool? RowAlignLeft { get; set; } = true;
        public bool? DefaultEmptyDisplayText { get; set; } = true;
        public bool ShowRowNum { get; set; } = false;
    }
}