认为Devexpress TreeList控件的Bug...

在运用Devexpress过程中发现一个自己认为是Devexpress控件TreeList的Bug。

涉及到三个事件的执行的理解：BeforeCollapse（展开之前），BeforeFocusNode（获得焦点之前），AfterFocusNode（获得焦点之后）。

正常的理解：BeforeFocusNode执行完在CanFocus是True的情况下就执行AfterFocusNode。

当点击了TreeList节点前面的-号（收缩）【实际触发的是BeforeCollapse这个事件】后，BeforeFocusNode执行完在CanFocus是True的情况下不执行AfterFocusNode。

个人理解，有误请指正！

View Code

 1         /// <summary>
 2         /// 获得焦点之前
 3         /// </summary>
 4         /// <param name="sender"></param>
 5         /// <param name="e"></param>
 6         private void basicTreeView1_BeforeFocusNode(object sender, DevExpress.XtraTreeList.BeforeFocusNodeEventArgs e)
 7         {
 8             if ( ViewIndex == 1&&!this.InvokeRequired)
 9             {
10                 if (rightPanel.Controls.Count == 0) return;
11                 if (e.Node == basicTreeView1.FocusedNode) return;
12                 if ((rightPanel.Controls[0] as IMain).DataChangs())
13                 {
14                     DialogResult ret = XtraMessageBox.Show(Resources.Multilingual.String[Constant.MultilingualField.DataChangsTip], Resources.Multilingual.String[Constant.MultilingualField.MissageTitle], MessageBoxButtons.YesNo, MessageBoxIcon.Asterisk);
15                     if (ret == DialogResult.Yes)
16                     {
17                         if (((((rightPanel.Controls[0] as UcTabBase).Controls[0] as DevExpress.XtraTab.XtraTabControl).SelectedTabPage).Controls[0] as UcMainInfomationBase).SaveData())
18                             ;//(rightPanel.Controls[0] as IMain).Save();
19                         else
20                         {
21                             e.CanFocus = false;
22                         }
23                     }
24                 }
25             }
26         }
27         /// <summary>
28         /// 获得焦点之后
29         /// </summary>
30         /// <param name="sender"></param>
31         /// <param name="e"></param>
32         private void basicTreeView1_AfterFocusNode(object sender, DevExpress.XtraTreeList.NodeEventArgs e)
33         {
34             if (DisplayDataList)
35                 SetRzGraphParameter(e.Node);
36             if (ViewIndex == 1)
37             {
38                 MD_ConfigurationTree treeNode = NodeConversionModel(e.Node);
39                 DataRow dr = (basicTreeView1.GetDataRecordByNode(e.Node) as DataRowView).Row;
40                 DataSet dsData = dr.Table.DataSet.Clone();
41                 dsData.Tables[0].ImportRow(dr);
42                 dsData.AcceptChanges();
43                 SetConfigurationMode(treeNode, dsData);
44 
45                 if (DisplayDataList)
46                     RefreshGraData();//刷新数据
47             }
48         }
49         /// <summary>
50         /// 收缩之前
51         /// </summary>
52         /// <param name="sender"></param>
53         /// <param name="e"></param>
54         private void basicTreeView1_BeforeCollapse(object sender, DevExpress.XtraTreeList.BeforeCollapseEventArgs e)
55         {
56              if (IsCollapseHigherNode(e.Node,basicTreeView1.FocusedNode))
57             {
58                 basicTreeView1.FocusedNode = e.Node;
59                 if(!basicTreeView1.HasFocus)
60                     e.CanCollapse = false;
61             }
62         }