Simple Segue not working in Xamarin

Question

I am attempting a simple segue in my app using xamarin studio. I used the storyboard to initiate the segue using the "present modally" function, but every time I click the button to perform the segue in a simulator I receive the following error:

Failed to marshal the Objective-C object 0x7f8018511770 (type: loginViewController). Could not find an existing managed instance for this object, nor was it possible to create a new managed instance (because the type 'iOSApp.loginViewController' does not have a constructor that takes one IntPtr argument).

Any idea as to what may be causing the problem? I have attached a screenshot of my main.storyboard file as well.

The following code snippets are my ViewController.cs files and loginViewController.cs codes

using System;

using UIKit;

namespace iOSApp
{
    public partial class ViewController : UIViewController
    {
        protected ViewController(IntPtr handle) : base(handle)
        {
            // Note: this .ctor should not contain any initialization logic.
        }

        public override void ViewDidLoad()
        {
            base.ViewDidLoad();
            // Perform any additional setup after loading the view, typically from a nib.
        }

        public override void DidReceiveMemoryWarning()
        {
            base.DidReceiveMemoryWarning();
            // Release any cached data, images, etc that aren't in use.
        }
     }
}

and

using System;

using UIKit;

namespace iOSApp
{


    public partial class loginViewController : UIViewController
    {
        public loginViewController(IntPtr handle) : base(handle)
        {
        }

        public override void ViewDidLoad()
        {
            base.ViewDidLoad();
            // Perform any additional setup after loading the view, typically from a nib.
        }

        public override void DidReceiveMemoryWarning()
        {
            base.DidReceiveMemoryWarning();
            // Release any cached data, images, etc that aren't in use.
        }


    }
}

Answer 1

In your LoginViewController class ensure that you have the following constructor so it can be inflated from the storyboard:

protected YourClassNameViewController(IntPtr handle) : base(handle)
{
    // Note: this .ctor should not contain any initialization logic.
}

If your class name is loginViewController, then your class will look something like:

protected partial class loginViewController : UIViewController
{
    public loginViewController(IntPtr handle) : base (handle)
    {
       // Note: this .ctor should not contain any initialization logic.
    }

    ~~~~ rest of class
}