如何遍历CheckBoxList,获得选中项的值?动态绑定CheckBoxList或给某些项赋值?

CheckBoxList,相信大家应该并不陌生,特别是在投票里面,还有爱好啦什么的里面很有有用,下面我们就来探讨一下CheckBoxList的基本用法:

1.CheckBoxList的动态绑定

基本思路如下:

在Page_load里,加载页面的时候从数据库里读取Northwind数据库里表Employees表的值绑定到CheckBoxlist上.这样就把数据库的表的内容绑定好了.

if(!this.IsPostBack)
            ...{
                SqlConnection con=new SqlConnection("server=.;database=Northwind;uid=sa;pwd=;");
                con.Open();
                SqlCommand cmd=new SqlCommand("select top 10 * from Employees",con);
                SqlDataReader sdr=cmd.ExecuteReader();
                try
                ...{
                    this.chklistA.DataSource=sdr;
                    this.chklistA.DataTextField="LastName";
                    this.chklistA.DataValueField="EmployeeID";
                    this.chklistA.DataBind();
                }
                catch(Exception Ex)
                ...{
                    throw Ex;
                }
                finally
                ...{
                    sdr.Close();
                    con.Close();
                    con.Dispose();
                }
            }

2.添加一个按钮button1,在button1的Button1_Click事件里插入一下代码,这就是如何遍历ch

foreach(ListItem li in this.chklistA.Items)
            ...{
                if(li.Selected==true)
                ...{
                    Response.Write(li.Text+"<br>");
                }
            }

eckboxlist的了: