我正在绘制如下所示的签名并获取 XY 坐标并将其保存到数组列表中。
Bitmap bmp;
//Graphics object
Graphics graphics;
//Pen object
Pen pen = new Pen(Color.Black);
// Array List of line segments
ArrayList pVector = new ArrayList();
//Point object
Point lastPoint = new Point(0, 0);
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
// process if currently drawing signature
if (!drawSign)
{
// start collecting points
drawSign = true;
// use current mouse click as the first point
lastPoint.X = e.X;
lastPoint.Y = e.Y;
}
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
// process if drawing signature
if (drawSign)
{
if (graphics != null)
{
// draw the new segment on the memory bitmap
graphics.DrawLine(pen, lastPoint.X, lastPoint.Y, e.X, e.Y);
pVector.Add(lastPoint.X + " " + lastPoint.Y + " " + e.X + " " + e.Y);
// update the current position
lastPoint.X = e.X;
lastPoint.Y = e.Y;
// display the updated bitmap
Invalidate();
}
}
}
使用 arrylist (pVector) 我将值作为字符串 (singature) 和图像保存到数据库中,如下所示
//Saving value to Database
ArrayList arrSign = new ArrayList();
arrSign = this.signatureControl.getPVector();
string singature = "";
for (int i = 0; i < arrSign.Count; i++)
{
singature = singature + arrSign[i].ToString() + "*";
}
the string singature wiil be like this
60 46 59 48*59 48 59 51*59 51 59 53*59 53 60 49*60 49 61 44*61 44 62 38*62 38 64 31*64 31 67 23*67 23 70 14*70 14 72 10*72 10 75 3*75 3 77 -2*77 -2 76 2*76 2 75 6*75 6 72 17*72 17 71 24*71 24 69 31*69 31 68 46*68 46 67 59*67 59 68 71*68 71 69 79*69 79 70 86*70 86 71 89*71 89 71 93*71 93 71 95*71 95 71 97*71 97 70 95*70 95 69 88*69 88 68 81*68 81 69 77*69 77 69 68*69 68 71 60
//Saving as Image file
Pen pen = new Pen(Color.Black);
string[] arrStr = (signature.Split('*'));
Graphics graphics;
Bitmap bmp = new Bitmap(300, 200);
graphics = Graphics.FromImage(bmp);
graphics.Clear(Color.White);
for (int i = 0; i < arrStr.Length - 2; i++)
{
string[] strArr = new string[4];
strArr = ((arrStr[i].ToString()).Split(' '));
graphics.DrawLine(pen, Convert.ToInt32(strArr[0].ToString()), Convert.ToInt32(strArr[1].ToString()),
Convert.ToInt32(strArr[2].ToString()), Convert.ToInt32(strArr[3].ToString()));
}
string pathToCopyImage = systemBus.TempFile;
bmp.Save(pathToCopyImage + "\\" + dsReportDetails.Tables["tblDelivery"].Rows[0]["PKDelivery"].ToString() + "_Signature.bmp", System.Drawing.Imaging.ImageFormat.Bmp);
bmp.Dispose();
我的问题是,在将签名另存为图像文件后,我无法将其转换回 arrylist,就像我用来将值保存在数据库中的那个一样。即我需要将图像文件转换回如下格式
60 46 59 48*59 48 59 51*59 51 59 53*59 53 60 49*60 49 61 44*61 44 62 38*62 38 64 31*64 31 67 23*67 23 70 14*70 14 72 10*72 10 75 3*75 3 77 -2*77 -2 76 2*76 2 75 6*75 6 72 17*72 17 71 24*71 24 69 31*69 31 68 46*68 46 67 59*67 59 68 71*68 71 69 79*69 79 70 86*70 86 71 89*71 89 71 93*71 93 71 95*71 95 71 97*71 97 70 95*70 95 69 88*69 88 68 81*68 81 69 77*69 77 69 68*69 68 71 60
有人能帮我吗