[英]change property to combobox in propertygrid
我有来自互联网源代码的这段代码,我认为这段代码可能适用于将属性从文本框更改为PropertyGrid中的组合框,但在运行之后,它仍然是一个文本框。 有人可以帮忙解决这个问题吗?
public class Testing
{
private String _formatString;
[Category("Display")]
[DisplayName("Format String")]
[Description("Format string governing display of data values.")]
[DefaultValue("")]
[TypeConverter(typeof(FormatStringConverter))]
public String FormatString { get; set; }
public class FormatStringConverter : StringConverter
{
List<String> list = new List<String>();
public override bool GetStandardValuesSupported(ITypeDescriptorContext context) { return true; } // true means show combobox
public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) { return true; } // true list to list, false will show the list, but allow free=form.
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
list.Add("Curren");
list.Add("Currency");
list.Add("Scientific Notation");
list.Add("General Number");
list.Add("Number");
list.Add("Percent");
list.Add("Time");
list.Add("Date");
return new StandardValuesCollection(list);
}
}
}
如果我们需要从TextBox到ComboBox显示属性值,我们想要为特定的属性类型编写自定义编辑器。 请在ComboBox中找到以下代码片段以显示属性值(String数组的类型)
public class ComboBoxEditor : ITypeEditor
{
public void Attach(PropertyViewItem property, PropertyItem info)
{
}
ComboBoxAdv cmb;
public object Create(PropertyInfo propertyInfo)
{
cmb = new ComboBoxAdv();
cmb.Items.Add("Curren");
cmb.Items.Add("Currency");
cmb.Items.Add("Scientific Notation");
cmb.Items.Add("General Number");
cmb.Items.Add("Number");
cmb.Items.Add("Percent");
cmb.Items.Add("Time");
cmb.Items.Add("Date");
return cmb;
}
public void Detach(PropertyViewItem property)
{
throw new NotImplementedException();
}
}
CustomEditor ComboBoxEditor = new CustomEditor() { HasPropertyType = true, PropertyType = typeof(string[]) };
ComboBoxEditor.Editor = new ComboBoxPropertyGridSample.ComboBoxEditor();
我还附上了简单的样本
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