'对匹配指定绑定约束的类型调用构造函数会抛出异常

所以我试图构建一个访问Etsy的API的程序，到目前为止，我所要做的就是使用OAuth调用它，它抛出这个异常。

'调用类型' testsy的构造函数。与指定绑定约束匹配的主窗口抛出了异常。行号'3'，行位'9'。

这是我的XAML

<Window x:Class="testEtsy.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525">
<Grid></Grid>

下面是我在mainwindow。cs

中的代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace testEtsy
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
        string[] orderNumbers = System.IO.File.ReadAllLines(@"F:'ordernumbers.txt");
        public static void getOAuthKey()
        {
            string ConsumerKey = "q6uqzk27z2yw4tl5s4qerdtp";
            string ConsumerSecret = "tkjz2mu4x1";
            OAuth.Manager m = new OAuth.Manager();
            m["consumer_key"] = ConsumerKey;
            m["consumer_secret"] = ConsumerSecret;
            OAuth.OAuthResponse requestToken =
                m.AcquireRequestToken("https://openapi.etsy.com/v2/oauth/request_token?scope=transactions_r", "POST");
        }
    }
}

string[] orderNumbers = System.IO.File.ReadAllLines(@"F:'ordernumbers.txt");