Question

我正在研究.net项目。我有一个DataTable（https://datatables.net/），可以从数据库中加载数据。该数据表看起来像。我还弹出了一个表单，该表单会将数据添加到我的数据表中。我的表单看起来像。我已经标记了添加项目按钮和搜索栏。我的问题是，当我在表搜索和分页栏中添加新值时，我所标记的内容丢失了。这是我的表定义。

        <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
            <ContentTemplate>
                <table id="example" class="table table-striped table-bordered nowrap" style="width: 100%">
                    <thead>
                        <tr>
                            <%--                            <th>Name</th>
                    <th>Position</th>
                    <th>Office</th>
                    <th>Age</th>
                    <th>Start date</th>
                    <th>Salary</th>--%>

                            <th>Code</th>
                            <th>Item Name</th>
                            <th>Specification</th>
                            <th>Unit</th>
                            <th>Qnty</th>
                            <th>Rate</th>
                            <th>Amount</th>
                            <%--<th style="width: 60px">Edit</th>
                    <th style="width: 60px">Delete</th>--%>
                        </tr>
                    </thead>
                    <tbody>
                        <asp:Literal ID="Literal1" runat="server"></asp:Literal>
                        <%--                        <tr>
                    <td>Tiger Nixon</td>
                    <td>System Architect</td>
                    <td>Edinburgh</td>
                    <td>61</td>
                    <td>2011/04/25</td>
                    <td>$320,800</td>
                </tr>
                <tr>
                    <td>Garrett Winters</td>
                    <td>Accountant</td>
                    <td>Tokyo</td>
                    <td>63</td>
                    <td>2011/07/25</td>
                    <td>$170,750</td>
                </tr>
                <tr>
                    <td>Ashton Cox</td>
                    <td>Junior Technical Author</td>
                    <td>San Francisco</td>
                    <td>66</td>
                    <td>2009/01/12</td>
                    <td>$320,800</td>
                </tr>
                <tr>
                    <td>Cedric Kelly</td>
                    <td>Senior Javascript Developer</td>
                    <td>Edinburgh</td>
                    <td>22</td>
                    <td>2012/03/29</td>
                    <td>$320,800</td>
                </tr>
                <tr>
                    <td>Airi Satou</td>
                    <td>Accountant</td>
                    <td>Tokyo</td>
                    <td>33</td>
                    <td>2008/11/28</td>
                    <td>$320,800</td>
                </tr>
                <tr>
                    <td>Brielle Williamson</td>
                    <td>Integration Specialist</td>
                    <td>New York</td>
                    <td>61</td>
                    <td>2012/12/02</td>
                    <td>$320,800</td>
                </tr>--%>
                    </tbody>
                    <tfoot>
                        <tr>
                            <th>Code</th>
                            <th>Item Name</th>
                            <th>Specification</th>
                            <th>Unit</th>
                            <th>Qnty</th>
                            <th>Rate</th>
                            <th>Amount</th>
                            <%--                                            <th style="width: 60px">Edit</th>
                                    <th style="width: 60px">Delete</th>--%>
                        </tr>
                    </tfoot>
                </table>
            </ContentTemplate>
        </asp:UpdatePanel>

这是将数据添加到表的方式。

protected void btnItemAdd_Click(object sender, EventArgs e)
        {
            lblMsg.Text = "";

            decimal amt = -1;

            if (!decimal.TryParse(txtQty.Text, out amt))
            {
                lblMsg.Text = @"Invalid Quentity";
                txtQty.Focus();
                return;
            }

            if (!decimal.TryParse(txtrate.Text, out amt))
            {
                lblMsg.Text = @"Invalid Rate";
                txtrate.Focus();
                return;
            }

            add_reqItemList(ddlItem.SelectedValue.ToString(), ddlItem.Text, txtItemSpecific.Text.Trim(), txtUnit.Text.Trim(), txtQty.Text, txtrate.Text, txtamt.Text);
        }




 private void grdItem_DataBind()
{
    DataTable tbl1 = (DataTable)ViewState["REQITEMLIST"];
    string _itemCode, _itemName, _temDesc, _itemUnit, _itemQty, _itemRate, _itemAmt;


    for (int rowcnt = 0; rowcnt < tbl1.Rows.Count; rowcnt++)
    {
        _itemCode = tbl1.Rows[rowcnt]["ItmCode"].ToString();
        _itemName = tbl1.Rows[rowcnt]["ItmName"].ToString();
        _temDesc = tbl1.Rows[rowcnt]["ItmDesc"].ToString();
        _itemUnit = tbl1.Rows[rowcnt]["ItmUnit"].ToString();
        _itemQty = tbl1.Rows[rowcnt]["ItmQty"].ToString();
        _itemRate = tbl1.Rows[rowcnt]["ItmRate"].ToString();
        _itemAmt = tbl1.Rows[rowcnt]["TTMAMNT"].ToString();

        if (rowcnt == 0)
        {
            mnu = "<tr>";
        }
        else
        {
            mnu = mnu + "<tr>";
        }

        mnu = mnu + "<td><a href=" + x + "#ItemAddEdit" + x + " name=" + x + "abc" + x + " onclick=" + x
            + "openModal('" + _itemCode + "','" + _itemName + "','" + _temDesc + "','" + _itemUnit + "','" + _itemQty + "','" + _itemRate + "','" + _itemAmt + "');" + x + ">"
            + _itemCode + "</a></td>";
        mnu = mnu + "<td>" + _itemName + "</td>";
        mnu = mnu + "<td>" + _temDesc + "</td>";
        mnu = mnu + "<td>" + _itemUnit + "</td>";
        mnu = mnu + "<td>" + _itemQty + "</td>";
        mnu = mnu + "<td>" + _itemRate + "</td>";
        mnu = mnu + "<td>" + _itemAmt + "</td>";
        mnu = mnu + "</tr>";
    };
    Literal1.Text = mnu;

}


private void add_reqItemList(string _ITMCODE, string _ITMNAME, string _ITMDESC, string _ITMUNIT, string _ITMQTY, string _ITMRATE, string _TTMAMNT)
        {
            dt = new DataTable();
            dt = (DataTable)ViewState["REQITEMLIST"];

            DataRow row1;
            row1 = dt.NewRow();

            row1["ITMCODE"] = _ITMCODE;
            row1["ITMNAME"] = _ITMNAME;
            row1["ITMDESC"] = _ITMDESC;
            row1["ITMUNIT"] = _ITMUNIT;
            row1["ITMQTY"] = _ITMQTY;
            row1["ITMRATE"] = _ITMRATE;
            row1["TTMAMNT"] = _TTMAMNT;

            dt.Rows.Add(row1);

            ViewState["REQITEMLIST"] = dt;

            grdItem_DataBind();
            UpdatePanel1.Update();
        }

请帮助解决该问题

Answer 1

向DataTable添加数据后，您可能需要重新初始化表：

if ($.fn.DataTable.isDataTable("#mytable")) {
    $('#mytable').DataTable().clear().destroy();
}

$("#mytable").dataTable();

使用表单添加数据时缺少搜索和分页

1 个答案: