我如何使用我定义的类将图像保存在数据库中

如何解决我如何使用我定义的类将图像保存在数据库中

我已经在程序中定义了类，但是我只能收集信息，例如：名字，姓氏等。现在，我的客户希望我将照片包含在该程序类中，但我发现很难做到；这是我定义的类：-

 public class EMPLOYEESCLASS
    {
    public EMPLOYEESCLASS()
        {
        // Insert code required on object creation below this point.
        }
    public int ContactID { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string Contact { get; set; }
    public string RelativeContact { get; set; }
    public string Email { get; set; }
    public string DOB { get; set; }
    public string Address { get; set; }
    public string State { get; set; }
    public string Gender { get; set; }
    public string Nationality { get; set; }
    public string Disability { get; set; }

    static string MYCONNEC = ConfigurationManager.ConnectionStrings["MYCONNECTION"].ConnectionString;
    public DataTable Select()
        {
        SqlConnection conn = new SqlConnection(MYCONNEC);
            {
            DataTable dt = new DataTable();
            try
                {
                SqlCommand cmd = new SqlCommand("SELECT * FROM tbl_EMP",conn);
                SqlDataAdapter adapter = new SqlDataAdapter(cmd);
                adapter.Fill(dt);
                if (conn.State != ConnectionState.Open)
                { conn.Open(); }
                }
            catch (Exception)
                {

                }
            finally
                {
                conn.Close();
                }
            return dt;
            }
        }
    ***public bool Insert(EMPLOYEESCLASS emp)
        {
        bool isSuccess = false;
        SqlConnection conn = new SqlConnection(MYCONNEC);
            {
            try
                {
                SqlCommand cmd = new SqlCommand("INSERT INTO tbl_EMP (FirstName,LastName,Contact,RelativeContact,Email,DOB,Address,State,Gender,Nationality,Disability) VALUES (@FirstName,@LastName,@Contact,@RelativeContact,@Email,@DOB,@Address,@State,@Gender,@Nationality,@Disability)",conn);
                cmd.Parameters.AddWithValue("@FirstName",emp.FirstName);
                cmd.Parameters.AddWithValue("@LastName",emp.LastName);
                cmd.Parameters.AddWithValue("@Contact",emp.Contact);
                cmd.Parameters.AddWithValue("@RelativeContact",emp.RelativeContact);
                cmd.Parameters.AddWithValue("@Email",emp.Email);
                cmd.Parameters.AddWithValue("@DOB",emp.DOB);
                cmd.Parameters.AddWithValue("@Address",emp.Address);
                cmd.Parameters.AddWithValue("@State",emp.State);
                cmd.Parameters.AddWithValue("@Gender",emp.Gender);
                cmd.Parameters.AddWithValue("@Nationality",emp.Nationality);
                cmd.Parameters.AddWithValue("@Disability",emp.Disability);

                if (conn.State != ConnectionState.Open)
                { conn.Open(); }
                int rows = cmd.ExecuteNonQuery();
                if (rows > 0)
                    {
                    isSuccess = true;
                    }
                else
                    {
                    isSuccess = false;
                    }
                }
            catch (Exception)
                {
                }
            finally
                {
                conn.Close();
                }
            return isSuccess;***
            }
        }
    public bool Update(EMPLOYEESCLASS emp)
        {
        bool isSuccess = false;

        SqlConnection conn = new SqlConnection(MYCONNEC);
            {
            try
                {
                SqlCommand cmd = new SqlCommand("UPDATE tbl_EMP SET FirstName=@FirstName,LastName=@LastName,Contact=@Contact,RelativeContact=@RelativeContact,Email=@Email,DOB=@DOB,Address=@Address,Gender=@Gender,Nationality=@Nationality,Disability=@Disability WHERE ContactID=@ContactID",emp.Disability);
                cmd.Parameters.AddWithValue("ContactID",emp.ContactID);
                if (conn.State != ConnectionState.Open)
                { conn.Open(); }
                int rows = cmd.ExecuteNonQuery();
                if (rows > 0)
                    {
                    isSuccess = true;
                    }
                else
                    {
                    isSuccess = false;
                    }
                }
            catch (Exception)
                {

                }
            finally
                {
                conn.Close();
                }
            return isSuccess;
            }
        }
    public bool Delete(EMPLOYEESCLASS emp)
        {
        bool isSuccess = false;
        SqlConnection conn = new SqlConnection(MYCONNEC);
            {
            try
                {
                SqlCommand cmd = new SqlCommand("DELETE FROM tbl_EMP WHERE ContactID=@ContactID",conn);

                cmd.Parameters.AddWithValue("@ContactID",emp.ContactID);
                if (conn.State != ConnectionState.Open)
                { conn.Open(); }
                int rows = cmd.ExecuteNonQuery();

                if (rows > 0)
                    {
                    isSuccess = true;
                    }
                else
                    {
                    isSuccess = false;
                    }
                }
            catch (Exception)
                {

                }
            finally
                {
                conn.Close();
                }
            return isSuccess;
            }
        }

请添加以下 “ cmd.parameter.addwithvalue（” @ photo“，picbox.image）” ，但我不知道该怎么做因此，在insert方法中，有人可以帮助我相信

解决方法

在您的数据库中，将该字段设置为varbinary（MAX）并使用Mofid Moghimi回答的字节数组