如何在 c# 中将 List<string> 的值编码为 Barcode 后将其添加到 List<PictureBox> 中

Question

我有两个列表，一个是字符串，另一个是 PictureBox 类型。我想获取字符串类型列表的值并将其转换为条形码，然后将其保存到图片框类型的列表中。

我现在就是这样：

List<System.Windows.Forms.PictureBox> PictureBoxList = new List<System.Windows.Forms.PictureBox>();
List<string> SerialNumberList = new List<string>();
int SerialNumberStart = 0;

for(int i = 0; i < 10 ; i++)
{
    SerialNumberStart++;
    SerialNumberList.Add("S" + SerialNumberStart);
}

private void PrintButton_Click(object sender, EventArgs e)
{
   for(int j =0 ; j < SerialNumberList.Count ; j++)
   {
    BarcodeLib.TYPE barcodetype1 = BarcodeLib.TYPE.CODE39;
    BarcodeLib.Barcode bar1 = new BarcodeLib.Barcode();
    bar1.IncludeLabel = true;
    PictureBoxList[j].Image = bar1.Encode(barcodetype1 ,SerialNumberList[j]); // It gives me exception of Index out of range
    PictureBoxList.Add(PictureBoxList[j]);
    printDocument1.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(printDocument1_PrintPage);
    printDocument1.Print();
   }
}

private void PrintDocument_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
  Bitmap myBitmap1 = new Bitmap(pictureBox1.Width, pictureBox1.Height);
  pictureBox1.DrawToBitmap(myBitmap1, new Rectangle(0, 0, pictureBox1.Width, pictureBox1.Height));
  e.Graphics.DrawImage(myBitmap1, 0, 0);
  myBitmap1.Dispose();
}

我的第一个问题是如何将字符串转换为 PictureBox。 然后将 PictureBox 的每个项目转换为位图，然后打印所有位图，现在代码只打印一个条形码

Answer 1

你想要这样……对吧？？看到这是这个字符串“S1253551”在 3of9 和纯文本中的表示，最后是图像，对吗？

    public Image stringToImage(string inputString)
    { 
        string text = inputString.Trim();

        Bitmap bmp = new Bitmap(1, 1);

        //Set the font style of output image
        Font font = new Font("Free 3 of 9", 25, FontStyle.Regular, GraphicsUnit.Pixel);
        Font font2 = new Font("Arial", 15, FontStyle.Regular, GraphicsUnit.Pixel);

        Graphics graphics = Graphics.FromImage(bmp);

        int width = (int)graphics.MeasureString(text, font).Width;
        int height = (int)graphics.MeasureString(text, font).Height;

        int height2 = (int)graphics.MeasureString(text, font2).Height;

        bmp = new Bitmap(bmp, new Size(width, height+height2));
        graphics = Graphics.FromImage(bmp);



        //Specify the background color of the image
        graphics.Clear(Color.Cyan);
        graphics.SmoothingMode = SmoothingMode.AntiAlias;
        graphics.TextRenderingHint = TextRenderingHint.AntiAlias;



        //Specify the text, font, Text Color, X position and Y position of the image
        graphics.DrawString(text, font, new SolidBrush(Color.Black), 0, 0);
        graphics.DrawString(text, font2, new SolidBrush(Color.Black), 0, height);

        graphics.Flush();
        graphics.Dispose();

        //if you want to save the image  uncomment the below line.
        //bmp.Save(@"d:\myimage.jpg", ImageFormat.Jpeg);

        return bmp;
    }

记住您必须安装“free 3 of 9”字体。

您传递字符串“S1253551”，它会生成条形码并在底部添加纯文本，最后将其作为图像返回。

我已经尝试过它的工作代码。享受。 :)

从这里下载工作代码Download

Answer 2

表示您有字符串并且已将其转换为条形码。最后我们在条形码中有一个属性，它保存字符串的值，对吗？？现在你想将该字符串显示为图像？？

如果是这样，请参考以下代码 -

    public Image stringToImage(string inputString)
    {
        string text = inputString.Trim();

        Bitmap bmp = new Bitmap(1, 1);

        //Set the font style of output image
        Font font = new Font("Arial", 25, FontStyle.Regular, GraphicsUnit.Pixel);

        Graphics graphics = Graphics.FromImage(bmp);

        int width = (int)graphics.MeasureString(text, font).Width;
        int height = (int)graphics.MeasureString(text, font).Height;

        bmp = new Bitmap(bmp, new Size(width, height));
        graphics = Graphics.FromImage(bmp);



        //Specify the background color of the image
        graphics.Clear(Color.Cyan);
        graphics.SmoothingMode = SmoothingMode.AntiAlias;
        graphics.TextRenderingHint = TextRenderingHint.AntiAlias;



        //Specify the text, font, Text Color, X position and Y position of the image
        graphics.DrawString(text, font, new SolidBrush(Color.Black), 0, 0);
        graphics.Flush();
        graphics.Dispose();

        //if you want to save the image  uncomment the below line.
        //bmp.Save(@"d:\myimage.jpg", ImageFormat.Jpeg);

        return bmp;
    }

Answer 3

我相信，如果 bar1.Encode 实际上有Image 的返回类型，这行在PrintButton_Click 方法中：

PictureBoxList[j].Image = bar1.Encode(barcodetype1 ,SerialNumberList[j]); // It gives me exception of Index out of range
PictureBoxList.Add(PictureBoxList[j]);

应该是这样的：

var pictureBox = new PictureBox();
pictureBox.Image = bar1.Encode(barcodetype1 ,SerialNumberList[j]); 
PictureBoxList.Add(pictureBox);

更新：

为了清楚起见，我上面的回答意味着PrintButton_Click应该如下：

private void PrintButton_Click(object sender, EventArgs e)
{
   for(int j =0 ; j < SerialNumberList.Count ; j++)
   {
        BarcodeLib.TYPE barcodetype1 = BarcodeLib.TYPE.CODE39;
        BarcodeLib.Barcode bar1 = new BarcodeLib.Barcode();
        bar1.IncludeLabel = true;
        var pictureBox = new PictureBox();
        pictureBox.Image = bar1.Encode(barcodetype1 ,SerialNumberList[j]);
        PictureBoxList.Add(pictureBox);
        printDocument1.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(printDocument1_PrintPage);
        printDocument1.Print();
   }
}