應用程序iOS Xamarin（C＃）中的FormatException

Question

在我的移動應用（iOS）中，此代碼中包含FormatException：

    public partial class DetailTovarProsmotr : UIViewController
{

    public JsonValue myjsondetail;
    int count_product;
    float price_defoult;
    public string Code1;

    public DetailTovarProsmotr (IntPtr handle) : base (handle)
    {

    }
    public async Task<UIImage> LoadImage (string imageUrl)
    {
        var httpClient = new HttpClient();

        Task<byte[]> contentsTask = httpClient.GetByteArrayAsync (imageUrl);

        // await! control returns to the caller and the task continues to run on another thread
        var contents = await contentsTask;

        // load from bytes
        return UIImage.LoadFromData (NSData.FromArray (contents));
    }

    public async override void ViewDidLoad ()
    {

        base.ViewDidLoad ();


    //  Console.Out.WriteLine (detailtitle+" ViewDidLoad metod is run" + myjsondetail["ID"].ToString());

        Code1 = myjsondetail ["sku"];


        titleproduct001.Text = myjsondetail["post_title"];
        postSingleProduct.Text = myjsondetail["post_excerpt"];
        Weight001.Text = myjsondetail["weight"]+" г";
        price001.Text = myjsondetail["price"]+" грн";
        postImage.Image =await this.LoadImage (myjsondetail["img_url"]);

        count_product = 1;
        countproduct.Text = "1";


        //float price_defoult = float.Parse(price001.Text, CultureInfo.InvariantCulture) ;

        price_defoult = float.Parse( ((string)myjsondetail["price"]).Replace(".00", ".0") );



        plus.TouchUpInside += (o,s) => {
            //Console.Out.WriteLine("Нажали плюс!!!!");

            countproduct.Text = string.Format("{0}", ++count_product);
            price001.Text = string.Format("{0}", count_product*price_defoult + "грн");


        };
        mines.TouchUpInside += (o,s) => {

        //  Console.Out.WriteLine("Нажали минусссс!!!!");

            countproduct.Text = string.Format("{0}", count_product > 1 ? --count_product : 1);
            price001.Text = string.Format("{0}", count_product * price_defoult + "грн");


        };

        addToCart.TouchUpInside += (o,s) => {


            var documents = Environment.GetFolderPath (Environment.SpecialFolder.MyDocuments); 
            var filePath = Path.Combine (documents, "myFile.xml");

            Console.Out.WriteLine("Добавить в корзину!!!!!");
            Console.Out.WriteLine(countproduct.Text);


            //MessageBarStyleSheet styles = new MessageBarStyleSheet ();
            //UIColor colorb = UIColor.Black;
            //styles.BackgroundColorForMessageType(MessageType.Info).GetWhite;


            //  style.BackgroundColorForMessageType = UIColor.Black;
            MessageBarManager.SharedInstance.ShowMessage ("Товар добавлен ", "в корзину", MessageType.Info);

            //Posrednic singleprod = new Posrednic(myjsondetail);
            CartProduct cart = new CartProduct();
            int productQty = int.Parse(countproduct.Text);

            for (int i = 0;  i< productQty; i++) {
                cart.Add(myjsondetail.ToString());
            }

            CartProduct.PrintProducts(cart);
            //singleprod.myjsondetail =myjsondetail;

            XDocument doc = XDocument.Load(filePath);


            var product = new XElement("Product", new XAttribute("Code", Code1), new XAttribute("Qty", countproduct.Text));
            var products = doc.Descendants("Products").First(); // Get the first Products node.  Throw an exception if not found.
            products.Add(product);

            File.WriteAllText(filePath, doc.ToString());
            doc.Save (filePath);
            Console.WriteLine("Smotri tut");

            Console.WriteLine (doc.ToString());



        };




    }
}

我認為我在這方面的問題

price_defoult = float.Parse( ((string)myjsondetail["price"]).Replace(".00", ".0") );

但我現在不在我的問題所在。 在模擬器中，我的代碼正常工作，但在iPhone 5s中，我有：

FormatException輸入的字符串格式不正確。 （mscorlib）

System_Runtime_CompilerServices_AsyncMethodBuilderCore__ThrowAsyncm__0_object中的SIGABRT崩潰

System_Xml_XmlTextReaderImpl_Read中的SIGABRT崩潰

Answer 1

我解決了我的問題：

刪除第6行float price_defoult;

在行price001.Text = myjsondetail["price"]+" грн"; 刪除+" грн"

使用此行float price_defoult = float.Parse(price001.Text, CultureInfo.InvariantCulture)帶來類型。