DevExpress GridView 单元格进度条的绑定及拓展自定义进度条不同颜色显示

DevExpress GridView 单元格进度条的绑定及拓展自定义进度条不同颜色显示

2019年06月21日 18:17:27 涛神-Dev 阅读数 34 标签： GridView单元格进度条 更多

个人分类： DevExpressWinform

DevExpress提供进度条的控件ProgressBarControl，并且能在GridView的单元格中使用，效果图如图所示

关于单元格绑定progressBarControl，这里我简单介绍一下，列的ColumnEdit属性选择ProgressBarControl，然后设置选择的repositoryitemprogressBar1的ShowTitle属性来显示中间的百分数文本即可（其中，这里的数据源要求为整数型，如果你的字段值为小数类型的话，比如0.5，绑定字段的时候乘以100，改成50，这里的%是控件本身会显示的，不需要设置displayformat）。

ProgressBarControl使用起来简单快捷，但是如果想控制当小于某个值的时候用颜色预警，ProgressbarControl暂时还没有提供这个功能，所以只能自己利用GridView的CustomDrawCell的单元格绘制事件来实现此需求。

代码直接copy调用即可使用：

1. /// <summary>

2. /// 自定义进度条列

3. /// </summary>

4. /// <param name="view"></param>

5. /// <param name="fieldName">列的字段名</param>

6. /// <param name="warningValue"></param>

7. /// <param name="lessColor"></param>

8. /// <param name="greaterColor"></param>

9. public static void CustomProgressBarColumn(DevExpress.XtraGrid.Views.Grid.GridView view, string fieldName, int warningValue=50, Brush lessColor = null, Brush greaterColor = null)

10. {

11. var col = view.Columns[fieldName];

12. if (col == null) return;

13. col.AppearanceCell.Options.UseTextOptions = true;

14. col.AppearanceCell.TextOptions.HAlignment = HorzAlignment.Center;

15. view.CustomDrawCell += (s, e) =>

16. {

17. if (e.Column.FieldName == fieldName)

18. {

19. DrawProgressBar(e,warningValue,lessColor,greaterColor);

20. e.Handled = true;

21. DrawEditor(e);

22. }

23. };

24. }

25. static void DrawProgressBar(DevExpress.XtraGrid.Views.Base.RowCellCustomDrawEventArgs e, int warningValue = 50, Brush lessColor = null, Brush greaterColor = null)

26. {

27. decimal percent = e.CellValue == null ? 0m : (decimal)e.CellValue;

28. int width = (int)(percent * e.Bounds.Width);

29. Rectangle rect = new Rectangle(e.Bounds.X, e.Bounds.Y, width, e.Bounds.Height);

30.  

31. Brush b = Brushes.Green;

32. if (greaterColor != null)

33. {

34. b = greaterColor;

35. }

36. if (percent * 100 < warningValue)

37. {

38. if (lessColor == null)

39. {

40. b = Brushes.Red;

41. }

42. else

43. {

44. b = lessColor;

45. }

46. }

47. e.Graphics.FillRectangle(b, rect);

48. }

49. static void DrawEditor(DevExpress.XtraGrid.Views.Base.RowCellCustomDrawEventArgs e)

50. {

51. GridCellInfo cell = e.Cell as GridCellInfo;

52. Point offset = cell.CellValueRect.Location;

53. BaseEditPainter pb = cell.ViewInfo.Painter as BaseEditPainter;

54. AppearanceObject style = cell.ViewInfo.PaintAppearance;

55. if (!offset.IsEmpty)

56. cell.ViewInfo.Offset(offset.X, offset.Y);

57. try

58. {

59. pb.Draw(new ControlGraphicsInfoArgs(cell.ViewInfo, e.Cache, cell.Bounds));

60. }

61. finally

62. {

63. if (!offset.IsEmpty)

64. {

65. cell.ViewInfo.Offset(-offset.X, -offset.Y);

66. }

67. }

68. }

调用代码示例如下（绑定的数据源字段值为小于1的小数值，如：0.33，设置列的DisplayFormat属性）：

1. gridView1.Columns["col11"].DisplayFormat.FormatType = FormatType.Numeric;

2. gridView1.Columns["col11"].DisplayFormat.FormatString = "p0";

3. CustomProgressBarColumn(gridView1, "col11", 50, Brushes.IndianRed, Brushes.DodgerBlue);