At compile time DefaultValueAttribute will never influence the generated IL and it will not be read to initialize the property to that value (see DefaultValue attribute is just not working with my Vehicle Property). . To summarize, a WPF application has two layers: the data layer (the DataContext) along with https://godrejconnaughtonegurgaon.blogspot.com/2025/07/ganga-realty-liv-89-sector-89-gurgaon.html