Create and save QR code in asp.net with C#

Create and save QR code in asp.net with C#

Download Dll from given link

https://drive.google.com/drive/folders/0B2VobjpburSGdFBaZzBZSEJic0E?usp=sharing

.Aspx Page

<form id="form1" runat="server">

        <asp:TextBox ID="txtInput" runat="server"></asp:TextBox>

        <asp:Button ID="btnGenerate" runat="server" Text="Generate" OnClick="btnGenerate_Click" />

        <hr />

        <asp:PlaceHolder ID="plQRCode" runat="server" />

    </form>

.Cs Page

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using QRCoder;

using System.IO;

using System.Drawing;

public partial class CS : System.Web.UI.Page

{

    protected void btnGenerate_Click(object sender, EventArgs e)

    {

        string code = txtInput.Text;

        QRCodeGenerator qrGenerator = new QRCodeGenerator();

        QRCodeGenerator.QRCode qrCode = qrGenerator.CreateQrCode(code, QRCodeGenerator.ECCLevel.Q);

        System.Web.UI.WebControls.Image imgBarCode = new System.Web.UI.WebControls.Image();

        imgBarCode.Height = 250;

        imgBarCode.Width = 250;

        using (Bitmap bitMap = qrCode.GetGraphic(20))

        {

            using (MemoryStream ms = new MemoryStream())

            {

                bitMap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);

                byte[] byteImage = ms.ToArray();

                imgBarCode.ImageUrl = "data:image/png;base64," + Convert.ToBase64String(byteImage);

                string result = Convert.ToBase64String(byteImage, 0, byteImage.Length); ;

                CreateImage(result.ToString());

            }

            plQRCode.Controls.Add(imgBarCode);

        }

    }

  

    public string CreateImage(string Byt)

    {

     

        try

        {

            byte[] data = Convert.FromBase64String(Byt);

            var filename = Convert.ToString(System.Guid.NewGuid()).Substring(0, 5) + Convert.ToString(System.Guid.NewGuid()).Substring(0, 5) + System.DateTime.Now.ToString("FFFFFF") + System.DateTime.Now.Minute + ".png";// +System.DateTime.Now.ToString("fffffffffff") + ".png";

            var file = HttpContext.Current.Server.MapPath("~/AppImages/" + filename);

            System.IO.File.WriteAllBytes(file, data);

            string ImgName = ".../profileimages/" + filename;

            return filename;

        }

        catch (Exception e)

        {

            return "Error";

        }

    }

}

It Will Look like :-