我正在开发一个程序，该程序将墨水笔触转换为字节数组以进行加密，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墨水笔触。我完成了代码的前半部分（将墨水笔触转换为字节数组）：
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;
}
}
}
但是我需要编写一种方法来将字节数组转换为墨水笔触，以便将墨水笔触转换为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，我要做的就是通过墨水笔触将该字节数组转换回图像。如果找到解决方案，我将用一种解决方案来更新！
编辑：嗯。我正在使用该链接中的代码，并且得到：“输入流不是有效的二进制格式。起始内容（按字节）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;
}
}
最佳答案
我的问题是我没有将输出序列化到保存的文件，因此在我加载该文件时将其反序列化会引发错误。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;
}
关于c# - 将InkCanvas笔划转换为字节数组，然后再次返回，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/30896167/