Share a C # create a Barcode DLL,

Share a C # create a Barcode DLL,

For work, Barcode is generated, and a DLL is retrieved from the Internet (the original address is forgotten)

Http://files.cnblogs.com/panchunting/barcode_bin.zip

It is very easy to use. You only need to add references and encode them as follows:

using System;using System.Collections.Generic;using System.Drawing;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using BarcodeLib;namespace WebAppBarcode{    public partial class GetBarCodeImage : System.Web.UI.Page    {        protected void Page_Load(object sender, EventArgs e)        {            string strEncode = Request.QueryString["Code"];            CreateImage(strEncode);        }        private void CreateImage(string Code)        {            BarcodeLib.Barcode barcode = new BarcodeLib.Barcode()            {                IncludeLabel = true,                Alignment = AlignmentPositions.CENTER,                Width = 300,                Height = 100,                RotateFlipType = RotateFlipType.RotateNoneFlipNone,                BackColor = Color.White,                ForeColor = Color.Black,            };            System.Drawing.Image img = barcode.Encode(TYPE.CODE128B, Code);            using (System.IO.MemoryStream ms = new System.IO.MemoryStream())            {                img.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);                Response.ClearContent();                Response.ContentType = "image/png";                Response.BinaryWrite(ms.ToArray());            }        }    }}

Call the background page

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;namespace WebAppBarcode{    public partial class _Default : Page    {        protected void Page_Load(object sender, EventArgs e)        {        }        protected void Button1_Click(object sender, EventArgs e)        {            imgBarcode.Src = "~/GetBarCodeImage.aspx?Code=" + this.TextBox1.Text;        }    }}

Call front-end code

    <ol class="round">        <li>            <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>            <asp:Button ID="Button1" runat="server" Text="Barcode" OnClick="Button1_Click" />        </li>        <li>                    </li>    </ol>

The final result is as follows:

The img length should be a little longer, especially when the characters are long, otherwise the scanner may not be able to scan

Questions about a sharing website in C Language

You have to lose it yourself. Someone asked you before...

In C language, how can multiple functions share a variable?

Define global variables?
Not quite clear about your requirements,
Generally, at the beginning of the Code, the global variables are defined after the pre-compilation,
Or define a static variable, such:
Static int;