/// <summary> /// 获取DataGrid的所有行是否存在验证错误。 /// </summary> /// <param name="dg">要检查的DataGrid实例</param> /// <returns>true 有错，false 无错</returns> public static bool GetDataGridRowsHasError(DataGrid dg) { bool hasError = false ; for (int i = 0; i < dg.Items.Count; i++) { DependencyObject o = dg.ItemContainerGenerator.ContainerFromIndex(i); hasError = Validation.GetHasError(o); if (hasError) { break; } } return hasError; } |
判断有验证错误 就不执行提交。
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
/// <summary> /// 获取DataGrid的第一个被发现的验证错误结果。 /// </summary> /// <param name="dg">被检查的DataGrid实例。</param> /// <returns>错误结果。</returns> public static ValidationError GetDataGridRowsFirstError(DataGrid dg) { ValidationError err=null; for (int i = 0; i < dg.Items.Count; i++) { DependencyObject o = dg.ItemContainerGenerator.ContainerFromIndex(i); bool hasError = Validation.GetHasError(o); if (hasError) { err = Validation.GetErrors(o)[0]; break; } } return err; } /// <summary> /// 执行检查DataGrid，并提示第一个错误。重新定位到错误单元格。 /// </summary> /// <param name="dg">被检查的DataGrid实例。</param> /// <returns>true 有错并定位，false 无错、返回</returns> public static bool ExcutedCheckedDataGridValidation(DataGrid dg) { ValidationError err = GetDataGridRowsFirstError(dg); if (err != null) { string errColName = ((System.Windows.Data.BindingExpression)err.BindingInError).ParentBinding.Path.Path; DataGridColumn errCol = dg.Columns.Single(p => { if (((Binding)((DataGridTextColumn)p).Binding).Path.Path == errColName) return true; else return false; }); //string errRow = ((DataRowView)((System.Windows.Data.BindingExpression)err.BindingInError).DataItem)["SWH"].ToString(); //dg.Items.IndexOf(((System.Windows.Data.BindingExpression)err.BindingInError).DataItem); dg.SelectedItem = ((System.Windows.Data.BindingExpression)err.BindingInError).DataItem; int errRowIndex = dg.SelectedIndex; MessageBox.Show(string.Format("第"{0}"行 的"{1}"列的单元格数据不合法(以红色标出)，请填写正确后再执行其他操作。", errRowIndex + 1, errCol.Header), "系统消息", MessageBoxButton.OK, MessageBoxImage.Warning); dg.CurrentCell = new DataGridCellInfo(dg.SelectedItem, errCol); if (!((DataRowView)dg.CurrentItem).IsEdit) { ((DataRowView)dg.CurrentItem).BeginEdit(); } TextBox txt = dg.CurrentColumn.GetCellContent(dg.CurrentItem) as TextBox; txt.Focus(); return true; } else { return false; } } |