如何使用C＃将复选框值存储到SQL Server数据库中

Question

I'm working on "Time Table Scheduling using genetic algorithm" project using C# and SQL Server..

I divided the project into 3 layers data access layer, business layer, and interfaces.

Data access layer contains:

• constructor to initialize the connection object
• method to open the connection
• method to read data from database
• method to insert, update, and delete data from database

For example:

//Method to insert , update ,delete data from database
public void ExecuteCommand(string stored_procedure, SqlParameter[] param)
{
            SqlCommand sqlcmd = new SqlCommand();
            sqlcmd.CommandType = CommandType.StoredProcedure;
            sqlcmd.CommandText = stored_procedure;
            sqlcmd.Connection = sqlconnection;

            if (param != null)
            {
                sqlcmd.Parameters.AddRange(param);
            }
            sqlcmd.ExecuteNonQuery();
}

The business layer contains class for each form

For example: ADD_COURSE.CLS for "Add COURSE"

class CLS_ADD_COURSE
{
        public void ADD_COURSE(string DESC_COURSE, int TERM, bool LAB, bool Specialized)
        {
            DAL.DataAccessLayer DAL = new DAL.DataAccessLayer();
            DAL.Open();
            SqlParameter[] param = new SqlParameter[4];

            param[0] = new SqlParameter("@DESC_COURSE", SqlDbType.VarChar, 50);
            param[0].Value = DESC_COURSE;

            param[1] = new SqlParameter("@TERM", SqlDbType.Int);
            param[1].Value = TERM;

            param[2] = new SqlParameter("@LAB", SqlDbType.Bit);
            param[2].Value = LAB;

            param[3] = new SqlParameter("@Specialized", SqlDbType.Bit);
            param[3].Value = Specialized;

            DAL.ExecuteCommand("ADD_COURSE", param);
            DAL.Close();
}

Now I want to store the data into the database so I wrote this instruction in form but it doesn't work for checkbox value

COURSE.ADD_COURSE(txt_COURSE_name.Text, Convert.ToInt32(TXT_COURSE_TERM.Text),Convert.ToBoolean(CHECK_LAB.Text),Convert.ToBoolean(CHECK_SP.Text));

So how to store a checkbox value into a SQL Server database using C#?

This my procedure:

create PROC [dbo].[ADD_COURSE]
   @DESC_COURSE VARCHAR(50),
   @TERM INT,
   @LAB BIT,
   @Specialized BIT
AS
   INSERT INTO [dbo].[COURSE]([DESC_COURSE], [TERM], [LAB],[Specialized ])  
   VALUES (@DESC_COURSE, @TERM, @LAB, @Specialized)

Answer 1

You can use int,tinyint, bit to store it in database. If the the checkbox is checked store it as 1, if it is unchecked store it is as 0. When you take the value of the checkbox you should perform same thing. If the value in the database is 1 set the checkbox to be checked.

There is possibility to store multiple values of checkbox in one database field using bitmask logic. But probably you don't need that in your case.

Answer 2

you can do something like this. here i am inserting employee into db.. see admin rights. which is a check box and adminrights db type is bit

                SqlCommand Command = new SqlCommand();
                Command.Connection = MyConnection;
                Command.CommandText =
                    "Insert into Employees (ID, Name, Last_name, Username, Password, E_mail, Address, administrator_rights)"
                    + "values(@ID, @Name, @Last_name, @Username, @Password, @E_mail,Address, @admin_rights )";

            Command.Parameters.Add("@ID", 1); // some generated number
            Command.Parameters.Add("@Name", TextBoxName.Text);
            Command.Parameters.Add("@Last_name", TextBoxLastName.Text);
            Command.Parameters.Add("@Username", TextBoxUserName.Text);
            Command.Parameters.Add("@Password", TextBoxPassword.Text);
            Command.Parameters.Add("@E_mail", TextBoxEmail.Text);
            Command.Parameters.Add("@Address", TextBoxAddress.Text);
            Command.Parameters.Add("@admin_rights", CheckBoxAdminRights.Checked);

            using (MyConnection)
            {
                Command.ExecuteNonQuery();
            }