XamlParseException: No matching constructor found on type
Today in this article, we will cover below aspects,
Issue Description
WPF application runtime gives below error,
System.Windows.Markup.XamlParseException
Message=’No matching constructor found on type MissingMethodException: No default constructor found for type ‘WPFDesktopApp.EmployeeWindow’. You can use the Arguments or FactoryMethod directives to construct this type.
Resolution
This issue is more visible when you try to provide a custom instance of the Window object.
For Example, The issue is common when the target Window is being instantiated with parameterized constructor etc.
public partial class EmployeeWindow : Window
{
private readonly IEmployeeViewModel _businessObject;
public EmployeeWindow(IEmployeeViewModel business)
{
InitializeComponent();
_businessObject = business;
}
...
}
In such cases, please remove default StartupUri property being set in the App.xaml file.
The issue resolves once the above line is removed.
Did I miss anything else in these resolution steps?
Did the above steps resolve your issue? Please sound off your comments below!
Happy Coding !!
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