Hi,

I'm trying to add an attribute to a colour property by using the create property method. The attribute i'm trying to add is the browsableAttribute but i am getting an error saying the entity key already exists.

the code i'm using is below:

protected PropertyDescriptorCollection GetPropertiesInternal(Attribute[] attributes)

PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(this, attributes, true);

PropertyDescriptor[] propertiesArray = new PropertyDescriptor[properties.Count];

for (int i = 0; i < properties.Count; i++)

if (properties.Name == "BackColour")

bool makeReadOnly = !m_PromptDefinition is ReadOnlyDefinition

propertiesArray = TypeDescriptor.CreateProperty(GetType(), properties, new Attribute[] { new BrowsableAttribute(makeReadOnly) });

else if (properties.Name == "ForeColour")

bool makeReadOnly = !m_PromptDefinition is ReadOnlyDefinition

propertiesArray = TypeDescriptor.CreateProperty(GetType(), properties, new Attribute[] { new BrowsableAttribute(makeReadOnly) });

else

properties = new PropertyDescriptorCollection(propertiesArray);

return properties;

I have changed this to be a readOnlyAttributeand it works fine. I thought that maybe it was because the colour property has a default browsableAttribute and trying to add another one caused this error but the property also has a default readOnlyAttribute. I'm really confused.

Can anybody offer some advise?

Thanks