/// <summary>
/// Sets or removes an attribute from the target element. Marks the target dirty after the update
/// </summary>
/// <param name="attributeName"></param>
/// <param name="attributeValue"></param>
/// <returns>XmlAttribute which has been updated</returns>
internal XmlAttribute SetOrRemoveTargetAttribute
(
string attributeName,
string attributeValue
)
{
// If this Target object is not actually represented by a
// <Target> element in the parentProject.file, then do not allow
// the caller to set the condition.
error.VerifyThrowInvalidOperation(this.targetElement != null, "CannotSetCondition");
// If this item was imported from another parentProject. we don't allow modifying it.
error.VerifyThrowInvalidOperation(!this.importedFromAnotherProject, "CannotModifyImportedProjects");
XmlAttribute updatedAttribute = ProjectXmlUtilities.SetOrRemoveAttribute(targetElement, attributeName, attributeValue);
// Mark the project dirty after an attribute has been updated
this.MarkTargetAsDirty();
return updatedAttribute;
}