服务器端获取客户端动态添加的表格行数据的一个简单示例

有朋友问道：如何获取客户端js添加的表格行数据？
这里提供一种方案：
aspx文件：

   <form id="form1" runat="server">
    <div>
        <table width="100%" border="0" cellpadding="2" cellspacing="1" id="SignFrame" >
            <tr id="trHeader" align="center">
                <td width="60" height="25px;" align="center" bgcolor="#1C5E55" style="color: #FFFFFF">
                    序号
                </td>
                <td bgcolor="#1C5E55" align="center" style="color: #FFFFFF">
               </td>
            </tr>
        </table>
    </div>
    <div>
        &nbsp;<input type="button" name="Submit" value="添加行" onclick="AddSignRow()" />
        &nbsp;
        <input type="button" name="Submit2" value="清空" onclick="ClearAllSign()" />
        <input name='txtTRLastIndex' type='hidden' id='txtTRLastIndex' value="1" />
        <br />
        <span class="notetext">注：最多只能3行</span>
    </div>
    <asp:Button ID="btnInsert" Text="确认添加" runat="server" OnClick="btnInsert_Click" />
    </form>

js脚本：

    <script type="text/javascript" language="javascript">
<!--
        var TempCount = 1; //不可删除！downmoon 2010701
        // Example: obj = findObj("image1");
        function findObj(theObj, theDoc) {
            var p, i, foundObj;
            if (!theDoc) theDoc = document;
            if ((p = theObj.indexOf("?")) > 0 && parent.frames.length) {
                theDoc = parent.frames[theObj.substring(p + 1)].document;
                theObj = theObj.substring(0, p);
            }
            if (!(foundObj = theDoc[theObj]) && theDoc.all) foundObj = theDoc.all[theObj];
            for (i = 0; !foundObj && i < theDoc.forms.length; i++)
                foundObj = theDoc.forms[i][theObj];
            for (i = 0; !foundObj && theDoc.layers && i < theDoc.layers.length; i++)
                foundObj = findObj(theObj, theDoc.layers[i].document);
            if (!foundObj && document.getElementById) foundObj = document.getElementById(theObj);

            return foundObj;
        }
        function AddSignRow() {
            if (TempCount > 3) return;
            var txtTRLastIndex = findObj("txtTRLastIndex", document);
            var rowID = parseInt(txtTRLastIndex.value);
            var signFrame = findObj("SignFrame", document);
            var newTR = signFrame.insertRow(signFrame.rows.length);
            newTR.id = "SignItem" + rowID;
            var newNameTD = newTR.insertCell(0);
            newNameTD.innerHTML = newTR.rowIndex.toString();
            var newNameTD = newTR.insertCell(1);
            newNameTD.innerHTML = "<input name='MyFile" + rowID + "' id='MyFile" + rowID + "' type='text' />";
            txtTRLastIndex.value = (rowID + 1).toString();
            TempCount = TempCount + 1;
        }
        function DeleteSignRow(rowid) {
            var signFrame = findObj("SignFrame", document);
            var signItem = findObj(rowid, document);
            var rowIndex = signItem.rowIndex;
            signFrame.deleteRow(rowIndex);
            for (i = rowIndex; i < signFrame.rows.length; i++) {
                signFrame.rows[i].cells[0].innerHTML = i.toString();
            }
        }
        function ClearAllSign() {
            if (confirm('确定要清空所有输入框吗？')) {
                var signFrame = findObj("SignFrame", document);
                var rowscount = signFrame.rows.length;
                for (i = rowscount - 1; i > 0; i--) {
                    signFrame.deleteRow(i);
                }
                var txtTRLastIndex = findObj("txtTRLastIndex", document);
                txtTRLastIndex.value = "1";
                TempCount = 1;
                AddSignRow();
            }
        }
//-->
    </script>

后台代码：

  protected void btnInsert_Click(object sender, EventArgs e)
        {
            int index = int.Parse(Request.Form["txtTRLastIndex"]) - 1;
            System.Text.StringBuilder sb = new System.Text.StringBuilder();
            if (index > 0)
            {
                for (int i = 1; i <= index; i++)
                {
                    sb.Append(string.Format("SignFrame表格行第{0}行的{1}的值为:{2}<br/>", i, "MyFile" + i, Request.Form["MyFile" + i.ToString()]));
                }
            }
            Response.Write(sb.ToString());
        }

演示效果：

如果要想实现像google,163，QQ类似的上传文件效果，可以看这里：
http://www.cnblogs.com/downmoon/archive/2008/07/23/1249410.html