今天跟大家聊聊WF4 PropertyGrid如何扩展，可能很多人都不太懂。为了让大家更好的了解，边肖为大家总结了以下内容，希望大家能从这篇文章中有所收获。
1.我们有一个如下的CaryActivity活动：
namespacrypropertygridexten { public sealed classcaractivity : codeactivity { public inargumenttext { get；设置；} public double repeattcount { get；设置；} publicstringFileName { get设置；} protectedveridevidexecute(codeActivityContextContext){ } } } 2。上述活动中有重复计数和文件名属性。我们将在属性窗格中为这两个属性的设置自定义属性值编辑器。效果如下：
3.定义分别对应两个属性的属性值编辑器，如下所示：
namespacrypropertygridexten { classcustominlinneeditor : propertyvalueeditor }
public海关
{
this。InlineEditorTemplatenbsp
;= new DataTemplate();
FrameworkElementFactory stack = new FrameworkElementFactory(typeof(StackPanel));
FrameworkElementFactory slider = new FrameworkElementFactory(typeof(Slider));
Binding sliderBinding = new Binding("Value");
sliderBinding.Mode = BindingMode.TwoWay;
slider.SetValue(Slider.MinimumProperty, 0.0);
slider.SetValue(Slider.MaximumProperty, 100.0);
slider.SetValue(Slider.ValueProperty, sliderBinding);
stack.AppendChild(slider);
FrameworkElementFactory textb = new FrameworkElementFactory(typeof(TextBox));
Binding textBinding = new Binding("Value");
textb.SetValue(TextBox.TextProperty, textBinding);
textb.SetValue(TextBox.IsEnabledProperty, false);
stack.AppendChild(textb);
this.InlineEditorTemplate.VisualTree = stack;
}
}
}
namespace CaryPropertyGridExten
{
class FilePickerEditor : DialogPropertyValueEditor
{
public FilePickerEditor()
{
this.InlineEditorTemplate = new DataTemplate();
FrameworkElementFactory stack = new FrameworkElementFactory(typeof(StackPanel));
stack.SetValue(StackPanel.OrientationProperty, Orientation.Horizontal);
FrameworkElementFactory label = new FrameworkElementFactory(typeof(Label));
Binding labelBinding = new Binding("Value");
label.SetValue(Label.ContentProperty, labelBinding);
label.SetValue(Label.MaxWidthProperty, 90.0);
stack.AppendChild(label);
FrameworkElementFactory editModeSwitch = new FrameworkElementFactory(typeof(EditModeSwitchButton));
editModeSwitch.SetValue(EditModeSwitchButton.TargetEditModeProperty, PropertyContainerEditMode.Dialog);
stack.AppendChild(editModeSwitch);
this.InlineEditorTemplate.VisualTree = stack;
}
public override void ShowDialog(PropertyValue propertyValue, IInputElement commandSource)
{
Microsoft.Win32.OpenFileDialog ofd = new Microsoft.Win32.OpenFileDialog();
if (ofd.ShowDialog() == true)
{
propertyValue.Value = ofd.FileName.Substring(ofd.FileName.LastIndexOf('\\') + 1);
}
}
}
}
4. 在CaryActivity的构造函数中增加自定义属性的信息如下，关于AttributeTableBuilder及MetadataStore的使用可参考关于元数据存储区MetadateStore及AttributeTableBuilder这篇文章。
public CaryActivity() { AttributeTableBuilder builder = new AttributeTableBuilder();
builder.AddCustomAttributes(typeof(CaryActivity), "RepeatCount", new EditorAttribute(typeof(CustomInlineEditor), typeof(PropertyValueEditor)));
builder.AddCustomAttributes(typeof(CaryActivity), "FileName", new EditorAttribute(typeof(FilePickerEditor), typeof(DialogPropertyValueEditor)));
MetadataStore.AddAttributeTable(builder.CreateTable());
}
看完上述内容，你们对如何进行WF4属性窗格PropertyGrid扩展有进一步的了解吗？如果还想了解更多知识或者相关内容，请关注行业资讯频道，感谢大家的支持。
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