,可以通过自定义属性的方式来实现。具体步骤如下:
public class EllipsisTextPropertyDescriptor : PropertyDescriptor
{
private PropertyDescriptor originalPropertyDescriptor;
public EllipsisTextPropertyDescriptor(PropertyDescriptor originalPropertyDescriptor)
: base(originalPropertyDescriptor)
{
this.originalPropertyDescriptor = originalPropertyDescriptor;
}
public override bool CanResetValue(object component)
{
return originalPropertyDescriptor.CanResetValue(component);
}
public override Type ComponentType
{
get { return originalPropertyDescriptor.ComponentType; }
}
public override object GetValue(object component)
{
string originalValue = originalPropertyDescriptor.GetValue(component) as string;
if (originalValue != null && originalValue.Length > 10)
{
return originalValue.Substring(0, 10) + "...";
}
return originalValue;
}
public override bool IsReadOnly
{
get { return originalPropertyDescriptor.IsReadOnly; }
}
public override Type PropertyType
{
get { return originalPropertyDescriptor.PropertyType; }
}
public override void ResetValue(object component)
{
originalPropertyDescriptor.ResetValue(component);
}
public override void SetValue(object component, object value)
{
originalPropertyDescriptor.SetValue(component, value);
}
public override bool ShouldSerializeValue(object component)
{
return originalPropertyDescriptor.ShouldSerializeValue(component);
}
}
public partial class Form1 : Form
{
private MySettings settings;
public Form1()
{
InitializeComponent();
settings = new MySettings();
propertyGrid1.SelectedObject = settings;
}
}
public class MySettings
{
[Category("General")]
[Description("The name of the item.")]
[DisplayName("Item Name")]
[TypeConverter(typeof(EllipsisTextConverter))]
public string ItemName { get; set; }
}
public class EllipsisTextConverter : TypeConverter
{
public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object value, Attribute[] attributes)
{
PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(value, attributes);
PropertyDescriptorCollection newProperties = new PropertyDescriptorCollection(null);
foreach (PropertyDescriptor property in properties)
{
if (property.PropertyType == typeof(string))
{
newProperties.Add(new EllipsisTextPropertyDescriptor(property));
}
else
{
newProperties.Add(property);
}
}
return newProperties;
}
}
通过以上步骤,就可以在PropertyGrid中裁切文本并显示三个点。在自定义属性类中,可以根据需要修改裁切的长度。这样可以保证在PropertyGrid中显示的文本不会过长,同时又能显示关键信息。
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