[英]filler page for redirecting external url
使用c#、. net,Visual Studio 2010
我有一種情況,當用戶單擊gridview上的Hyperlink時,應該使用第1步調用webservice並傳遞一些值並接收需要附加到控件的導航url的新idkey來動態創建Navigationurl。這是在RowDataBound事件下完成的,但是它將浪費網格中每一行對Web服務的調用。 相反,我希望在用戶單擊鏈接時完成此操作?
我能想到的另一個想法是在填充頁面之間使用頁面說重定向,但這需要自動提交? 任何線索嗎??? 還是更好的方式?
謝謝
<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);
當然,您可以采用的一種方法是使用Jquery在客戶端生成鏈接,而不需要填充頁面...
例如,下表具有一些虛擬錨標記...
<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>
通過使用Jquery,您可以綁定所有這些鏈接以執行一項特定操作,即轉到Web服務。
<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>
訣竅是利用適當的Jquery選擇器來獲取您的鏈接,並根據需要傳遞任何參數(在上面的示例中,我們使用隱藏的輸入和DOM導航...
刪除了數據導航代碼
string[] dataNavigateUrlFields = {"link"}; LinksBoundField.DataTextField = "link"; LinksBoundField.DataNavigateUrlFields = dataNavigateUrlFields;
更改為以下通過grdviewLink傳遞的url。NavigateUrl不會混亂。
<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());
}
這很好
感謝Curt從這里獲得了使用ashx文件而不是aspx的提示
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