Question

使用c＃，。net，Visual Studio 2010

我遇到一种情况，当用户点击gridview上的Hyperlink时，应该使用步骤动态创建导航栏 1调用webservice并传递几个值并接收需要附加到控件的导航URL的新idkey，我可以在RowDataBound事件下完成此操作，但它会对网格中的每一行进行webservice的浪费调用。相反，我想在用户点击链接时完成此操作？

我能想到的另一个想法是在填充页面之间使用页面说重定向，但是需要自动提交？这个???的任何线索？还是更好的做法？

由于

     <asp:GridView ID="GridViewLinkedService" runat="server" AutoGenerateColumns="False" DataKeyNames = "applicationId"
                DataSourceID="ObjectDataLinkedService" Height="213px"  Width="897px">
                <Columns>
                  <asp:BoundField DataField="applicationId" HeaderText="Application ID"  Visible ="true" 
                        SortExpression="applicationId">
                         <HeaderStyle BackColor="#4B6C9E" BorderStyle="Solid" Font-Bold="True" 
                        Font-Names="Verdana" Font-Size="Small" ForeColor="White" />
                    <ItemStyle Width="10px" />
                        </asp:BoundField>
                    <asp:BoundField DataField="referenceNumber" HeaderText="Reference Number" 
                        SortExpression="referenceNumber"  >
                    <HeaderStyle BackColor="#4B6C9E" BorderStyle="Solid" Font-Bold="True" 
                        Font-Names="Verdana" Font-Size="Small" ForeColor="White" />
                    <ItemStyle Width="30px" />
                    </asp:BoundField>
                    <asp:BoundField DataField="applicationName" HeaderText="Application Name" 
                        SortExpression="applicationName" >
                          <HeaderStyle BackColor="#4B6C9E" BorderStyle="Solid" Font-Bold="True"  Font-Names="Verdana" Font-Size="Small"  ForeColor="White"/>
                        </asp:BoundField>                       
                    <asp:BoundField DataField="address" HeaderText="Address" 
                        SortExpression="address" >
                            <HeaderStyle BackColor="#4B6C9E" BorderStyle="Solid" Font-Bold="True"  Font-Names="Verdana" Font-Size="Small"  ForeColor="White" />
                        </asp:BoundField>

                </Columns>

Hyperlink column is added in the Pageload

  HyperLinkField LinksBoundField = new HyperLinkField();
            string[] dataNavigateUrlFields = {"link"};
            LinksBoundField.DataTextField = "link";
            LinksBoundField.DataNavigateUrlFields = dataNavigateUrlFields;
**LinksBoundField.NavigateUrl; //call webservice(send appid and refno) and append newtoken to url (reieved from datasource link)**
            LinksBoundField.DataNavigateUrlFormatString = "http://" + Helper.IP + "/" + Helper.SiteName + "/" + Helper.ThirdPartyAccess + "?value={0}&token=" + Session["Token"]; 
            LinksBoundField.HeaderText = "Link";
            LinksBoundField.Target = "_blank";          
                  GridViewLinkedService.Columns.Add(LinksBoundField);    
               GridViewLinkedService.RowDataBound += new GridViewRowEventHandler(grdView_RowDataBound);

Answer 1

当然，您可以采取的一种方法是使用Jquery在客户端生成链接，而不需要填充页面...

例如，下表中有一些虚拟锚标记......

<table cellspacing="0" border="1" id="grdSpys">
<tbody>
    <tr>
        <th align="center" scope="col">Name<th align="center" scope="col">Action</th>
    </tr>
    <tr>
        <td>Mr A</td>
        <td>
            <a href="#">Click Me</a>
            <input type="hidden" value="Anthony" />
        </td>
    </tr>
    <tr>
        <td>Mr B</td>
        <td>
            <a href="#">Click Me</a>
            <input type="hidden" value="Barry" />
        </td>
    </tr>
    <tr>
        <td>Mr C</td>
        <td>
            <a href="#">Click Me</a>
            <input type="hidden" value="Carl" />
        </td>
    </tr>
    <tr>
        <td>Mr D</td>
        <td>
            <a href="#">Click Me</a>
            <input type="hidden" value="Don" />
        </td>
    </tr>
    <tr>
        <td>Mr E</td>
        <td>
            <a href="#">Click Me</a>
            <input type="hidden" value="Ethan" />
        </td>
    </tr>
</tbody>

并且通过使用Jquery，您可以绑定所有这些链接以执行一个特定操作，即转到Web服务。

    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.js"></script>

    <script type="text/javascript">

        $(document).ready(function() {
            $("#grdSpys a").bind('click' , function() {
                var secretName =  $(this).next().val();
                alert('goto the webservice, tell them it is ' + secretName );
            });
        });

    </script>

诀窍是利用适当的Jquery selectors来获取你的链接并适当地传递任何参数（在上面的例子中我们使用隐藏的输入和DOM导航......

Answer 2

删除了数据导航代码

  string[] dataNavigateUrlFields = {"link"};                LinksBoundField.DataTextField = "link";                LinksBoundField.DataNavigateUrlFields = dataNavigateUrlFields;

更改为使用grdviewLink.NavigateUrl传递的以下网址不会混淆。

 <asp:HyperLinkField DataTextField="link" HeaderText="Multi-Link" Target="_blank" ItemStyle-Width = "5px" ItemStyle-Wrap ="true">
                     <HeaderStyle  Wrap="True" Width="5px"  BackColor="#4B6C9E" BorderStyle="Solid" Font-Bold="True"   Font-Names="Verdana"   ForeColor="White"/>

                    </asp:HyperLinkField>    

 protected void grdView_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            string strvalue = "";         
            string strRef = "";
            string strAppId = "";
            foreach (GridViewRow row in GridViewLinkedService.Rows)
            {
                if (row.RowType == DataControlRowType.DataRow)
                {  //reference and appid
                    strAppId = row.Cells[0].Text;
                    strRef = row.Cells[1].Text;
                    HyperLink grdviewLink = (HyperLink)row.Cells[6].Controls[0];
                    strvalue = grdviewLink.Text;
                    grdviewLink.NavigateUrl = "~/My Service/Navigate.ashx?AppID=" + strAppId.ToString() + "&Ref=" + strRef.ToString() + "&nurl=" + Server.UrlEncode(strvalue);

                } 
            }
        }

Navigate.ashx文件

public void ProcessRequest(HttpContext context)
        {
            if (context.Request.QueryString.GetValues("AppID") != null)
            {
                appid = context.Request.QueryString.GetValues("AppID")[0].ToString();
            }

            if (context.Request.QueryString.GetValues("Ref") != null)
            {
                refno = context.Request.QueryString.GetValues("Ref")[0].ToString();
            }

            if (context.Request.QueryString.GetValues("nurl") != null)
            {

                nurl = HttpUtility.UrlDecode(context.Request.QueryString.GetValues("nurl")[0].ToString());
            }

这非常有效

感谢Curt从这里获得了使用ashx文件而不是aspx的提示

ashx

用于重定向外部URL的填充页面

2 个答案: