动态添加控件，如何实现点击一次添加一个，再次点击再增加一个。。。

[jarodzhao]

                                <table style="width: 100%" border="1" runat="server" id="mx">
                                    <tr>
                                        <td align="left" style="width: 100px;">
                                            姓名：
                                        </td>
                                        <td align="left">
                                            <asp:TextBox ID="TextBox23" CssClass="underline" Width="100px" runat="server"></asp:TextBox>
                                        </td>
                                        <td align="left" colspan="2">
                                            身份证号：
                                            <asp:TextBox ID="TextBox24" runat="server" 
                                            CssClass="underline" Width="100px"></asp:TextBox>
                                            <asp:Button  ID="Button2" runat="server" Font-Size="12px" Text="添加一行" OnClick="AddNew" />
                                        </td>
                                    </tr>
                                </table>

        protected void AddNew(object sender, EventArgs e)
        {
            HtmlTableRow row = new HtmlTableRow();
            HtmlTableCell cell;
            TextBox tb;

            cell = new HtmlTableCell();
            cell.InnerText = "姓名：";
            row.Cells.Add(cell);

            cell = new HtmlTableCell();
            tb = new TextBox();
            tb.ID = "tb" + mx.Rows.Count.ToString();
            tb.CssClass = "underline";
            tb.Width = Unit.Pixel(100);
            tb.Font.Size = FontUnit.Point(9);
            cell.Controls.Add(tb);
            row.Cells.Add(cell);

            cell = new HtmlTableCell();
            tb = new TextBox();
            tb.ID = "tb_" + mx.Rows.Count.ToString();
            tb.CssClass = "underline";
            tb.Width = Unit.Pixel(100);
            tb.Font.Size = FontUnit.Point(9);
            cell.Controls.Add(tb);

            cell = new HtmlTableCell();
            cell.InnerText = "身份证号：";
            tb = new TextBox();
            tb.ID = "tb__" + mx.Rows.Count.ToString();
            tb.CssClass = "underline";
            tb.Width = Unit.Pixel(100);
            tb.Font.Size = FontUnit.Point(9);
            cell.Controls.Add(tb);
            

            row.Cells.Add(cell);
            mx.Rows.Add(row);
            
            
        }

我想在每次点击“添加一行”的按钮后就添加一个新行，点几次，就添加几行
但是上面的代码只是实现了一行，第二次点击时候就不添加。。。。

[步慢生错]

table- -
我帮不了你。本来还想说appandChild，creatElement之类的。。

[cnidb]

MSDN上说将控件的EnableViewState 设置为false即可，但我这里就是没有成功；也许你可以试试先

this.mx.EnableViewState = false;

[orain]

其实不用提交到后台去处理，在前台用 JavaScript 很容易就实现了，增加只要复制第一行然后追加到表格尾部就可以了，删除直接移除表格行。提交的时候把要搜集的数据整理一下，在后台就可以取到值了。

[三碗猪脚]

比较麻烦的，控件的状态要保存~~~~~~~~

[cnidb]

protected void Page_Load(object sender, EventArgs e)
        {
            if (ViewState["Count"] != null)
            {
                for (int i = 0; i < Convert.ToInt16(ViewState["Count"]); i++)
                {
                    AddRow();
                }
            }
            if (!IsPostBack)
            {
                ViewState["Count"] = 0;
            }
        }
        public void AddRow(){
            HtmlTableRow row = new HtmlTableRow();
            HtmlTableCell cell;
            TextBox tb;

            cell = new HtmlTableCell();
            cell.InnerText = "姓名：";
            row.Cells.Add(cell);

            cell = new HtmlTableCell();
            tb = new TextBox();
            tb.ID = "tb" + mx.Rows.Count.ToString();
            tb.CssClass = "underline";
            tb.Width = Unit.Pixel(100);
            tb.Font.Size = FontUnit.Point(9);
            cell.Controls.Add(tb);
            row.Cells.Add(cell);

            cell = new HtmlTableCell();
            tb = new TextBox();
            tb.ID = "tb_" + mx.Rows.Count.ToString();
            tb.CssClass = "underline";
            tb.Width = Unit.Pixel(100);
            tb.Font.Size = FontUnit.Point(9);
            cell.Controls.Add(tb);

            cell = new HtmlTableCell();
            cell.InnerText = "身份证号：";
            tb = new TextBox();
            tb.ID = "tb__" + mx.Rows.Count.ToString();
            tb.CssClass = "underline";
            tb.Width = Unit.Pixel(100);
            tb.Font.Size = FontUnit.Point(9);
            cell.Controls.Add(tb);


            row.Cells.Add(cell);
            mx.Rows.Add(row);
        }
        protected void AddNew(object sender, EventArgs e)
        {
            AddRow();
            ViewState["Count"] = Convert.ToInt16(ViewState["Count"]) + 1;
        }

[tyzs2001]

mark!!!!!!!!!!!!!