c# image转base64

c# image转base64

/// <summary>
/// 图片转换成base64
/// </summary>
/// <param name="bmp"></param>
/// <returns></returns>		
public static string ImageToBase64(Image bmp)
        {
    
    
            try
            {
    
    
                MemoryStream ms = new MemoryStream();
                bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
                byte[] arr = new byte[ms.Length]; ms.Position = 0;
                ms.Read(arr, 0, (int)ms.Length); ms.Close();
                return Convert.ToBase64String(arr);
            }
            catch (Exception ex)
            {
    
    
                LogHelper.WriteLog(ex.Message + $"出错代码行：{ex.StackTrace}", ex);
                return "";
            }
        }