Question

我得到了这个扩展tablerow的代码，使它们可以点击。

namespace ClickableTableRow
{
    public class ClickableTableRow : TableRow, IPostBackEventHandler
    {

        public ClickableTableRow()
            : base()
        { }

        private EventHandler _click;
        public event EventHandler Click
        {
            add { _click += value; }
            remove { _click -= value; }
        }

        protected virtual void FireClickEvent()
        {
            if (_click != null)
                _click(this, new EventArgs());
        }

        protected override void AddAttributesToRender(HtmlTextWriter writer)
        {
            writer.AddAttribute(HtmlTextWriterAttribute.Onclick, 
                Page.ClientScript.GetPostBackEventReference(this, String.Empty));
            base.RenderAttributes(writer);

        }

        public void RaisePostBackEvent(string eventArgument)
        {
            FireClickEvent();
        }
   }

如果我手动创建表，上面的代码运行良好，但是当我在后面的代码中创建表时，它似乎是触发回发但没有返回resuts。我可能做错了什么事。我的代码隐藏看起来像：

public partial class _Default : System.Web.UI.Page
{

    protected void Page_Load(object sender, EventArgs e)
    {


    } 

    protected void row1_Click(object sender, EventArgs e)
    {
        Messagebox.Text = "message";
    }

     ClickableTableRow.ClickableTableRow row1;

    protected override void OnLoad(EventArgs e)
    {
        base.OnLoad(e);

        Table Table1 = new Table();

        TableCell cell1 = new TableCell();

        row1= new ClickableTableRow.ClickableTableRow();
        row1.Attributes.Add("onmouseover", "this.style.cursor='hand'");

        cell1 = new TableCell();
        cell1.Text = "llllll";
        row1.Cells.Add(cell1);
        Table1.Rows.Add(row1);

        row1.Click += new EventHandler(row1_Click);
        this.pnl2.Controls.Add(Table1);
       }
}

Answer 1

尝试将此代码移至Init或PreInit。这是应该添加动态控件的生命周期中的典型部分。

IPostbackeventhandler没有返回自动表的结果

1 个答案: