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Using Custom Editor
Updated over 6 months ago
This following snippet demonstrates how to create and replace the standard spin editor with a track bar editor.
Figure 1: TrackBar Editor
All property grid editors inherit from BaseInputEditor. So, you have to inherit from this class and override several methods:
Creating Custom Editor
C#
public class PropertyGridTrackBarEditor : BaseInputEditor
{
public override object Value
{
get
{
RadTrackBarElement editor = (RadTrackBarElement)this.EditorElement;
return editor.Value;
}
set
{
RadTrackBarElement editor = (RadTrackBarElement)this.EditorElement;
if (value != null && value != DBNull.Value)
{
editor.Value = Convert.ToInt32(value);
}
else
{
editor.Value = 0;
}
}
}
public override void BeginEdit()
{
base.BeginEdit();
this.EditorElement.Focus();
((RadTrackBarElement)this.EditorElement).ValueChanged += new EventHandler(TrackBarEditor_ValueChanged);
}
void TrackBarEditor_ValueChanged(object sender, EventArgs e)
{
PropertyGridItemElement owner = this.OwnerElement as PropertyGridItemElement;
if (owner != null)
{
owner.PropertyTableElement.RaiseValueChanged(EventArgs.Empty);
}
}
public override bool EndEdit()
{
((RadTrackBarElement)this.EditorElement).ValueChanged -= TrackBarEditor_ValueChanged;
return base.EndEdit();
}
protected override RadElement CreateEditorElement()
{
return new RadTrackBarElement();
}
public override Type DataType
{
get { return typeof(int); }
}
}
The EditorRequired event is the correct place to replace the default editor:
Replace Editor
C#
void radPropertyGrid1_EditorRequired(object sender, PropertyGridEditorRequiredEventArgs e)
{
if (e.EditorType == typeof(PropertyGridSpinEditor))
{
e.EditorType = typeof(PropertyGridTrackBarEditor);
}
}