Question

我有一个XamDataGrid包含几个字段，包括这两个：

<igDP:Field Name="MinValue" Label="Min." Converter="{StaticResource DivideBy1000Converter}" Column="5">
    <igDP:Field.Settings>
        <igDP:FieldSettings CellWidth="60" 
                            AllowEdit="True" 
                            CellValuePresenterStyle="{StaticResource minValueCellEnabled}" 
                            EditAsType="{x:Type System:String}" 
                            EditorStyle="{StaticResource DecimalMWhStyle}" 
                            CellClickAction="EnterEditModeIfAllowed" />
    </igDP:Field.Settings>
</igDP:Field>
<igDP:Field Name="MaxValue" Label="Max." Converter="{StaticResource DivideBy1000Converter}" Column="6">
    <igDP:Field.Settings>
        <igDP:FieldSettings CellWidth="60" 
                            AllowEdit="True" 
                            CellValuePresenterStyle="{StaticResource maxValueCellEnabled}" 
                            EditAsType="{x:Type System:String}" 
                            EditorStyle="{StaticResource DecimalMWhStyle}" 
                            CellClickAction="EnterEditModeIfAllowed" />
    </igDP:Field.Settings>
</igDP:Field>

由于需求的变化和时间压力，我需要找到一种方法来动态更改字段的转换器和EditorStyle，具体取决于某些值（最有可能是布尔标志）。我已经看过使用样式选择器的一般示例，但不是如何（如果可能的话）将样式选择器应用于XamDataGrid的元素。我最初的想法是使用样式selctor类并为每个案例添加两个样式，即一个用于字段应该使用DivideBy1000Converter + DecimalMWhStyle组合，一个用于字段应该使用空转换器和PercentageStyle，但一路上我卡住了，我现在无法弄清楚如何最好地实现我想要的东西。

有没有人有这个好的解决方案？

Answer 1

使用行为快速完成此操作。

只需在XAML代码中构建所有样式和字段，并在行为中使用它们。看看下面的代码：

FieldLayout sourceFieldLayout = (Infragistics.Windows.Utilities.GetAncestorFromType(this.AssociatedObject, typeof(LocationMatchingView), false) as LocationMatchingView).Resources["LocationMatchingSourceFieldlayout"] as FieldLayout;
            foreach (Field field in sourceFieldLayout.Fields)
            {
                Field newField = new Field(field.Name, field.Label);
                newField.Tag = field.Tag;
                newField.Width = field.Width;
                newField.Settings.CellValuePresenterStyle = field.Settings.CellValuePresenterStyle;
                fieldLayout.Fields.Add(newField);
            }

            fieldLayout.Settings.DataRecordCellAreaStyle =
                                    (Infragistics.Windows.Utilities.GetAncestorFromType(this.AssociatedObject, 
                                    typeof(LocationMatchingView), false) as LocationMatchingView).Resources["CAMDataRecordCellAreaStyle"] as Style;
            fieldLayout.Settings.AutoGenerateFields = false;
            fieldLayout.Settings.FilterUIType = FilterUIType.LabelIcons;
            fieldLayout.Settings.AllowFieldMoving = AllowFieldMoving.WithinLogicalRow;
            fieldLayout.FieldSettings.CellValuePresenterStyle =
                                    (Infragistics.Windows.Utilities.GetAncestorFromType(this.AssociatedObject, 
                                    typeof(LocationMatchingView), false) as LocationMatchingView).Resources["CAMCellValuePresenterStyle"] as Style;
            fieldLayout.FieldSettings.LabelTextAlignment = System.Windows.TextAlignment.Center;
            fieldLayout.FieldSettings.LabelTextWrapping = TextWrapping.Wrap;
            fieldLayout.FieldSettings.LabelTextAlignment = TextAlignment.Justify;
            fieldLayout.FieldSettings.LabelClickAction = LabelClickAction.SortByOneFieldOnly;
            fieldLayout.FieldSettings.AllowRecordFiltering = true;
            fieldLayout.FieldSettings.FilterLabelIconDropDownType = FilterLabelIconDropDownType.MultiSelectExcelStyle;
            fieldLayout.FieldSettings.AllowEdit = false;
            fieldLayout.FieldSettings.LabelPresenterStyle = 
                                        (Infragistics.Windows.Utilities.GetAncestorFromType(this.AssociatedObject, 
                                            typeof(LocationMatchingView), false) 
                                            as LocationMatchingView).Resources["LocationMatchingLabelPresenterStyle"] as Style;
            fieldLayout.FieldSettings.AllowFixing = AllowFieldFixing.NearOrFar;
            fieldLayout.Settings.FixedFieldUIType = FixedFieldUIType.Splitter;
            fieldLayout.Settings.AllowClipboardOperations = AllowClipboardOperations.Copy;

我在运行时为我的网格生成fieldlayout。并且在运行时使用“ DataRecordCellAreaStyle ”，“ CellValuePresenterStyle ”，“ LabelPresenterStyle ”。这使您可以非常轻松地灵活地置换不同的样式/转换器，并且很容易实现和更改。

XamDataGrid（2011 - 2012）：如何使用XAML动态替换字段转换器+字段集？

1 个答案: