救急 救急 c# gridview问题！！！！

Question

gridview我绑定了整张表 //绑定
public void bind()
{

    string sqlstr = "select * from tijianjieguo";
    sqlcon = new SqlConnection(strCon);
    SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);    
    DataSet myds = new DataSet();
    sqlcon.Open();
    myda.Fill(myds, "tijianjieguo");
    GridView1.DataSource = myds;
    GridView1.DataKeyNames = new string[] { "ID" };//主键
    GridView1.DataBind();
    sqlcon.Close();

}
    现在效果是这样的![图片说明](https://img-ask.csdn.net/upload/201511/30/1448876813_34633.png)
    怎么在 视力 体重 下面 变成复选框  注意 我绑定的是整张表  字段不是固定的！！！

Answer 1