在数据库中实现多选

using  System;
using  System.Data;
using  System.Configuration;
using  System.Web;
using  System.Web.Security;
using  System.Web.UI;
using  System.Web.UI.WebControls;
using  System.Web.UI.WebControls.WebParts;
using  System.Web.UI.HtmlControls;
using  System.Data.SqlClient;

public   partial   class  _Default : System.Web.UI.Page 
... {
    protected void Page_Load(object sender, EventArgs e)
    ...{
        if (!Page.IsPostBack)
        ...{
            this.BindDataCb();
            BindDataGV();
        }
    }

    //绑定多选框#region//绑定多选框
    public void BindDataCb()
    ...{

        SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=TeacherTest;Integrated Security=True");
        SqlCommand objSqlCommand = new SqlCommand("Select * from Love", con);
        con.Open();
        DataSet ds = new DataSet();
        SqlDataAdapter adapter = new SqlDataAdapter();
        adapter.SelectCommand = objSqlCommand;
        adapter.Fill(ds);
        con.Close();
        this.cb_Love.DataSource = ds;
        this.cb_Love.DataTextField = "Love_name";
        this.cb_Love.DataValueField = "Love_value";
        this.cb_Love.DataBind();
    }
    #endregion

    //绑定GridView#region//绑定GridView
    public void BindDataGV()
    ...{
        SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=TeacherTest;Integrated Security=True");
        SqlCommand objSqlCommand = new SqlCommand("Select * from MoreCheck", con);
        con.Open();
        DataSet ds = new DataSet();
        SqlDataAdapter adapter = new SqlDataAdapter();
        adapter.SelectCommand = objSqlCommand;
        adapter.Fill(ds);
        con.Close();
        this.GridView1.DataSource = ds;
        this.GridView1.DataBind();
    }
    #endregion

    //插入数据#region//插入数据
    protected void Button1_Click(object sender, EventArgs e)
    ...{
        SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=TeacherTest;Integrated Security=True");
        SqlCommand objSqlCommand = new SqlCommand("insert into MoreCheck (name,age,love)values('"+this.txtName.Text+"','"+this.txtAge.Text+"',"+this.calculate(this.cb_Love)+")", con);
        con.Open();
        objSqlCommand.ExecuteNonQuery();
        con.Close();
        BindDataGV();
    }
    #endregion

    /计算选择的结果的值#region/计算选择的结果的值
    public int calculate(CheckBoxList cb)
    ...{
        int resultFir = 0;//此因子为以下每项选择完后进行“或”运算后得到的结果
        int resultSec = 0;//同上
        int resultCount = 0; //计数因子
        foreach (ListItem everItem in cb.Items)
        ...{
            if (everItem.Selected)
            ...{
                if (resultCount == 0)
                ...{
                    resultFir = int.Parse(everItem.Value);
                }
                else
                ...{
                    resultSec = int.Parse(everItem.Value);
                    resultFir = resultFir | resultSec;
                }
            }
            resultCount++;

        }
        return resultFir;
    }
    #endregion

    //单击选择,把选择的该行的值赋给文本框#region //单击选择,把选择的该行的值赋给文本框
    protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
    ...{
        string id = this.GridView1.SelectedRow.Cells[0].Text;
        SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=TeacherTest;Integrated Security=True");
        SqlCommand objSqlCommand = new SqlCommand("Select * from MoreCheck where id="+id, con);
        con.Open();
        DataSet ds = new DataSet();
        SqlDataAdapter adapter = new SqlDataAdapter();
        adapter.SelectCommand = objSqlCommand;
        adapter.Fill(ds);
        con.Close();
        //数据已经取到DataSet中
        DataView dv= ds.Tables[0].DefaultView;
        this.txtAge.Text = dv[0]["age"].ToString();
        this.txtName.Text = dv[0]["name"].ToString();
        this.SetCheckBoxListValue(cb_Love,Convert.ToInt32(dv[0]["love"].ToString()));
    }
    #endregion

    //是否打勾#region //是否打勾
    public void SetCheckBoxListValue(CheckBoxList cb, int iValue)
    ...{
        int iItemValue = -1;
        foreach (ListItem everItem in cb.Items)
        ...{
            iItemValue = int.Parse(everItem.Value);
            everItem.Selected = (iValue & iItemValue) > 0;
        }
    }
    #endregion
}