c# - 将 InkCanvas 笔划转换为字节数组并再次转换回来

Question

我正在开发一个程序，将 inkcanvas 笔画转换为字节数组进行加密，然后将其保存在 txt 文件中。本质上，我需要将字节数组转换为 inkcanvas 笔划。我已经完成了前半部分代码(将 inkcanvas 笔画转换为字节数组):

    private byte[] InkCanvasToByte()
    {
        using (MemoryStream ms = new MemoryStream())
        {
            if(myInkCanvas.Strokes.Count > 0)
            {
                myInkCanvas.Strokes.Save(ms, true);
                byte[] unencryptedSignature = ms.ToArray();
                return unencryptedSignature;
            }
            else
            {
                return null;
            }
        }
    }

但是我需要帮助编写一个方法来将字节数组转换为 inkcanvas 笔画，以便将 inkcanvas 笔画转换为 jpg。

---

到目前为止，我已经创建了一个打开字节数组文件并将其写入字节数组变量的方法:

    private void ReadByteArrayFromFile()
    {
        string Chosen_File = "";
        Microsoft.Win32.OpenFileDialog ofd = new Microsoft.Win32.OpenFileDialog();
        ofd.Filter = "All Files (*.*)|*.*";
        ofd.FilterIndex = 1;
        ofd.Multiselect = false;
        bool? userClickedOK = ofd.ShowDialog();
        if (userClickedOK == true)
        {
            Chosen_File = ofd.FileName;
        }
        byte[] bytesFromFile = File.ReadAllBytes(Chosen_File);

    }

现在我需要做的就是将该字节数组转换回图像，或者通过 inkcanvas 笔划。如果找到解决方案，我会更新这篇文章!

编辑:嗯。我正在使用该链接中的代码，我得到:“输入流不是有效的二进制格式。起始内容(字节)是:00-FB-03-03-06-48-11-45-35 -46-35-11-00-00-80-3F-1F ...”

我使用的代码是:

    private void ReadByteArrayFromFile(string Chosen_File)
    {

        byte[] bytesFromFile = File.ReadAllBytes(Chosen_File);
        try
        {
            BinaryFormatter bf = new BinaryFormatter();
            MemoryStream ms = new MemoryStream(bytesFromFile);
            MyCustomStrokes customStrokes = bf.Deserialize(ms) as MyCustomStrokes;
            for(int i = 0; i < customStrokes.StrokeCollection.Length; i++)
            {
                if(customStrokes.StrokeCollection[i] != null)
                {
                    StylusPointCollection stylusCollection = new
                      StylusPointCollection(customStrokes.StrokeCollection[i]);
                    Stroke stroke = new Stroke(stylusCollection);
                    StrokeCollection strokes = new StrokeCollection();
                    strokes.Add(stroke);
                    this.MyInkPresenter.Strokes.Add(strokes);
                }
            }

        }
        catch (Exception ex)
        {
            System.Windows.MessageBox.Show(ex.Message);
        }
    }

    private void DecryptByteArray(byte[] encryptedArray)
    {
    }


}
[Serializable]
public sealed class MyCustomStrokes
{
    public MyCustomStrokes() { }
    /// <SUMMARY>
    /// The first index is for the stroke no.
    /// The second index is for the keep the 2D point of the Stroke.
    /// </SUMMARY>
    public Point[][] StrokeCollection;
}

Answer 1

我的问题是我没有将输出序列化到保存的文件中，因此当我加载该文件时反序列化它会触发错误。这是正确的代码:

    private void SaveByteArrayToFile(byte[] byteArray)
    {
        var dialog = new System.Windows.Forms.FolderBrowserDialog();
        string filepath = "";
        if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
            filepath += dialog.SelectedPath;
            System.Windows.MessageBox.Show(filepath);
        }
        filepath += "Signature.txt";
        MyCustomStrokes customStrokes = new MyCustomStrokes();
        customStrokes.StrokeCollection = new Point[myInkCanvas.Strokes.Count][];
        for (int i = 0; i < myInkCanvas.Strokes.Count; i++)
        {
            customStrokes.StrokeCollection[i] = 
            new Point[this.myInkCanvas.Strokes[i].StylusPoints.Count];
            for (int j = 0; j < myInkCanvas.Strokes[i].StylusPoints.Count; j++)
            {
                customStrokes.StrokeCollection[i][j] = new Point();
                customStrokes.StrokeCollection[i][j].X = 
                                  myInkCanvas.Strokes[i].StylusPoints[j].X;
                customStrokes.StrokeCollection[i][j].Y = 
                                  myInkCanvas.Strokes[i].StylusPoints[j].Y;
            }
        }
        MemoryStream ms = new MemoryStream();
        BinaryFormatter bf = new BinaryFormatter();
        bf.Serialize(ms, customStrokes);
        File.WriteAllBytes(filepath, Encrypt(ms.GetBuffer()));
    }
   private void ReadByteArrayFromFile(string Chosen_File)
    {

        byte[] bytesFromFile = File.ReadAllBytes(Chosen_File);
        byte[] decryptedBytes = Decrypt(bytesFromFile);
        try
        {
            BinaryFormatter bf = new BinaryFormatter();
            MemoryStream ms = new MemoryStream(decryptedBytes);
            MyCustomStrokes customStrokes = bf.Deserialize(ms) as MyCustomStrokes;
            for(int i = 0; i < customStrokes.StrokeCollection.Length; i++)
            {
                if(customStrokes.StrokeCollection[i] != null)
                {
                    StylusPointCollection stylusCollection = new
                      StylusPointCollection(customStrokes.StrokeCollection[i]);
                    Stroke stroke = new Stroke(stylusCollection);
                    StrokeCollection strokes = new StrokeCollection();
                    strokes.Add(stroke);
                    this.MyInkPresenter.Strokes.Add(strokes);
                }
            }

        }
        catch (Exception ex)
        {
            System.Windows.MessageBox.Show(ex.Message);
        }
    }
[Serializable]
public sealed class MyCustomStrokes
{
    public MyCustomStrokes() { }
    /// <SUMMARY>
    /// The first index is for the stroke no.
    /// The second index is for the keep the 2D point of the Stroke.
    /// </SUMMARY>
    public Point[][] StrokeCollection;
}