小编use*_*973的帖子

{
SqlDataReader reader = cmdAuthors.ExecuteReader();
           RadioButton rb;
           Label lb;
           while(reader.Read()){
             rb=new RadioButton();
             lb=new Label();
             lb.Text=reader[0].ToString();
           rb.Attributes.Add("OnClick","getSelectedAuthor('"+lb.Text.ToString()+"')");
                PlaceHolder1.Controls.Add(rb);
                PlaceHolder1.Controls.Add(lb);
                PlaceHolder1.Controls.Add(new LiteralControl("<br />"));

            }
}

//我不知道在这个函数中要写什么才能使Label2.text = Text; // document.getElementById("Label2").value = text不起作用

function getSelectedAuthor(text){

}

 <div>
        <asp:Label ID="Label2"  runat="server" Text="" ></asp:Label>
    </div>