we have the following property:

private Size _picSize = new Size(1272, 787);

public Size PicSize
{
     get => _picSize;
     set => value;

}

if in the radpropertygrid for this property to remove the height and semicolon, press <enter>, an error occurs:

System.ArgumentException: Не удается разобрать текст "1000". Ожидаемый формат текста: "Width,Height".
в System.Drawing.SizeConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)
в Telerik.WinControls.UI.PropertyGridItem.ConvertValue(Object value, Object& convertedValue)
в Telerik.WinControls.UI.PropertyGridItem.set_Value(Object value)
в Telerik.WinControls.UI.PropertyGridTableElement.EndEditCore(Boolean commitChanges)
в Telerik.WinControls.UI.PropertyGridTextBoxEditor.OnLostFocus()

 

Hello, Valery, 

I have followed the provided information and setup a sample project to test the specific scenario. Indeed, when you edit the Size property and leave only the width part, an error will occur. Note that the Size property expects (width,height) format. Otherwise, the entered input wouldn't be able to parse to a valid Size. 

The possible solution that I can suggest is either to handle the PropertyValidating event and ensure that the newly entered value is valid and can be parsed to a valid Size or disable entering edit mode for the Size property itself bu edit only the width and height parts of the size. For this case it is necessary to cancel the Editing event. You can find below a sample code snippet: 


Feel free to use this approach which suits your requirement best.

I hope this information helps. If you need any further assistance please don't hesitate to contact me. 

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik