DevExpress GridView 鼠标悬停颜色追踪（行或单元格）

2019年07月12日 15:17:02 涛神-Dev 阅读数 41 标签： GridView行追踪单元格追踪 更多

个人分类： DevExpressWinformGridControl

如何将GridView做成类似网页的列表那样，鼠标移动的是行背景颜色跟着变，也就是所为的鼠标悬停追踪，

效果如下：

代码如下：

1. public class ViewStyleHelper

2. {

3. bool enable;

4. public bool Enable

5. {

6. get { return enable; }

7. set

8. {

9. enable = value;

10. UnRegisterEvent();

11. if (enable)

12. {

13. RegisterEvent();

14. }

15. else

16. {

17.  

18. View.RefreshData();

19. }

20. }

21. }

22. bool byRow;

23. /// <summary>

24. /// 真为行，假为单元格

25. /// </summary>

26. public bool ByRow

27. {

28. get { return byRow; }

29. set

30. {

31. byRow = value;

32. UnRegisterEvent();

33. if(enable)

34. RegisterEvent();

35. }

36. }

37. public DevExpress.XtraGrid.Views.Grid.GridView View { get; private set; }

38. /// <summary>

39. /// 当前列

40. /// </summary>

41. GridColumn currentCol;

42. /// <summary>

43. /// 当前行

44. /// </summary>

45. int currentRowHandle;

46. public ViewStyleHelper(DevExpress.XtraGrid.Views.Grid.GridView view,bool byRow=true)

47. {

48. View = view;

49. this.byRow = byRow;

50. Enable = true;

51. view.MouseLeave += (s, e) =>

52. {

53. currentCol = null;

54. currentRowHandle = int.MinValue;

55. view.RefreshData();

56. };

57. }

58. void RegisterEvent()

59. {

60. View.MouseMove += onm ouseMove;

61. if (!byRow)

62. View.RowCellStyle += OnRowCellStyle;

63. else

64. {

65. View.RowStyle += OnRowStyle;

66. }

67. }

68. void UnRegisterEvent()

69. {

70. View.MouseMove -= onm ouseMove;

71. View.RowCellStyle -= OnRowCellStyle;

72. View.RowStyle -= OnRowStyle;

73. }

74. private void onm ouseMove(object sender, MouseEventArgs e)

75. {

76. var view = sender as DevExpress.XtraGrid.Views.Grid.GridView;

77. var info = view.CalcHitInfo(e.Location);

78. bool refresh = false;

79. if (currentCol != info.Column || currentRowHandle != info.RowHandle)

80. {

81. refresh = true;

82. }

83. if (info.InDataRow)

84. {

85. currentCol = info.Column;

86. currentRowHandle = info.RowHandle;

87. }

88. else

89. {

90. currentCol = null;

91. currentRowHandle = int.MinValue;

92. }

93. if (refresh)

94. view.RefreshData();

95. }

96. private void OnRowStyle(object sender, DevExpress.XtraGrid.Views.Grid.RowStyleEventArgs e)

97. {

98. if (e.RowHandle == currentRowHandle)

99. {

100. e.Appearance.BackColor = Color.FromArgb(108, 178, 235);

101. e.HighPriority = true;

102. }

103.  

104. }

105. private void OnRowCellStyle(object sender, DevExpress.XtraGrid.Views.Grid.RowCellStyleEventArgs e)

106. {

107. if (e.Column == currentCol && e.RowHandle == currentRowHandle)

108. {

109. e.Appearance.BackColor = Color.FromArgb(108, 178, 235);

110. }

111.  

112. }

113. }

 

调用代码：

1. ViewStyleHelper helper;

2. private void Form1_Load(object sender, EventArgs e)

3. {

4. helper = new ViewStyleHelper(gridView1);

5. var dt = CreateDt();

6. gridControl1.DataSource = dt;

7. }