QR Code Generate in RowdataBound in Gridview in Asp.net

I hope you have a placeholder control inside your Gridview itemtemplate where you want to add QRCode

now on RowDataBound event 

if (e.Row.RowType == DataControlRowType.DataRow)
{
    //Find the PlaceHolder control.
    PlaceHolder plBarcode= (e.Row.FindControl("plBarCode") as PlaceHolder);
 int index = e.Row.RowIndex;
   string code = "testabc"+index;
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 = 150;
imgBarCode.Width = 150;
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);
    }
    plBarCode.Controls.Add(imgBarCode);
}
}