c# - 无法在 ASP.NET C# 项目中保存用于条形码生成的图像

Question

我正在尝试使用 System.Drawing.Save() 保存图像，但我一直收到无效参数异常。

谁能看看我的代码并告诉我我做错了什么。

这是生成条形码图像的代码。

 public class BarcodeHelper
    {
        Font barcodeFont;
        public BarcodeHelper()
        {
             PrivateFontCollection fonts;
             FontFamily family = LoadFontFamily("~/../fonts/Code128bWin.ttf", out fonts);   
             barcodeFont = new Font(family, 20.0f);   

            // when done:   
            barcodeFont.Dispose();   
            family.Dispose();   
            family.Dispose();
        }
        public FontFamily LoadFontFamily(string fileName, out PrivateFontCollection fontCollection) 
        { 
            fontCollection = new PrivateFontCollection(); 
            fontCollection.AddFontFile(fileName); 
            return fontCollection.Families[0]; 
        }

        public Image GenerateBarcode(string barcodeText) 
        {
            Image barcodeImage;
            using (barcodeImage = Image.FromFile(@"C:\Users\Administrator\Desktop\YodelShipping\YodelShipping\images\barcode.bmp"))
            {
                using (Graphics g = Graphics.FromImage(barcodeImage))
                {
                    g.DrawString(barcodeText,
                        new Font(barcodeFont, FontStyle.Bold), Brushes.Black, 
                        barcodeImage.Height /2, barcodeImage.Width / 2);
                }
            }
            return barcodeImage;
        }
    }

我在此处调用代码来创建和保存条形码图像。调用 Save() 方法时出现异常。

System.Drawing.Image img = barcodeHelper.GenerateBarcode("2lgbub51aj+01000002");
img.Save("~/images/barcode.png");

Answer 1

protected void Button1_Click(object sender, EventArgs e)
{
    try
    {
        Barcode barcode = new Barcode();
        BarcodeLib.TYPE type = BarcodeLib.TYPE.CODE93;
        BarcodeLib.SaveTypes y = SaveTypes.JPG;
        barcode.Encode(type, "12344");

        barcode.SaveImage(Server.MapPath("~/Barcode\\abc.jpg"), y);
                    Label1.Text = "Image Saved successfully";

    }
    catch (Exception EE)
    {
        EE.ToString();
    }
}