Pass a variable into a HyperlinkField along with a value from a table.

[Quickfix99]

I am having trouble getting the syntax correct for passing a variable into a URL from a Hyperlink field.

I have a string variable named MAPIMAGE. I would like to pass it to the URL after the "IMAGE=" section, then, get the next paramater from a table value.

How can I do this?

DataNavigateUrlFormatString="~/PropInfo.aspx?IMAGE=MAPIMAGE&PID={0}"

I would like the URL to look like this:

http://www.myserver.com/PropInfo.aspx?Image=http://www.myserver.com/test.jpg&PID=909-455-555

Thanks in advance,

QF

 

[tperri]

Try..

DataNavigateUrlFormatString='~/PropInfo.aspx?IMAGE=<%=MAPIMAGE%>&PID={0}'

 

[Quickfix99]

The URL turns out like this:

http://localhost:2080/PropInfo.aspx?IMAGE=<%=MAPIMAGE%>&PID=000-786-748

I did try something similiar but I got some sort of error regarding code blocks not allowed in that context...

 

[tperri]

Can you post your code so I can look at it and complete it the right way for you?

Thanks

 

[ca8msm]

If the Hyperlink is part of a data control, you can also use it's data bound event, get a reference to the Hyperlink and then set it's NavigateURL in code.


-------------------------------------------------------

Mark,
[URL unfurl="true"]http://aspnetlibrary.com[/url]
[URL unfurl="true"]http://mdssolutions.co.uk[/url] - Delivering professional ASP.NET solutions
[URL unfurl="true"]http://weblogs.asp.net/marksmith[/url]

 

[tperri]

Mark,

That is exactly what I was going to help out with If needed, of course.

 

[Quickfix99]

I converted to a template field but am still getting an error. Any ideas?

<asp:TemplateField>
<ItemTemplate>

<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl='<%# Eval("PID", "~/PropInfo.aspx?PID={0}") + "&Image=" + Eval("MAPIMAGE") %>'

Text='<%# Eval("MSLINK") %>'></asp:HyperLink>

</ItemTemplate>

</asp:TemplateField>

ERROR: DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'MAPIMAGE'.

 

[jmeckley]

NavigateUrl='<%# "~/PropInfo.aspx?PID=" + Eval("PID") + "&Image=" + Eval("MAPIMAGE") %>'


Jason Meckley
Programmer
Specialty Bakers, Inc.

 

[Quickfix99]

Still get this error:

DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'MAPIMAGE'.

MAPIMAGE is a variable set from a querystring. I need to pass this variable into the NavigateURLString.

 

[jmeckley]

ok, that make all the difference.
NavigateUrl='<%# "~/PropInfo.aspx?PID=" + Eval("PID") + "&Image=" + Request.QueryString["MAPIMAGE"] %>'


Jason Meckley
Programmer
Specialty Bakers, Inc.

 

[Quickfix99]

I think we're getting closer, however, for some reason ASP doesn't like my string:

Results of NavigateURL:

http://localhost:2080/start.aspx?MSLINK=3529&MAPIMAGE=http://www.tek-tips.com/images/logo.gif

Error Returned:

'~/PropInfo.aspx?PID=018-793-428 &Image=

http://www.tek-tips.com/images/logo.gif'

is not a valid virtual path.

 

[jmeckley]

the url is encoded so & is converted to &amp; look for an htmlencode t/f property on the template column or something like that to disable encoding.

Jason Meckley
Programmer
Specialty Bakers, Inc.

 

[Quickfix99]

Yikes...it appears that the HtmlEncode propety is not available for a template field! It looks like I am going to have to get creative with this and write some code-behind or something...Any ideas?

 

[tperri]

Look at the Gridview RowDataBound event

 

[Quickfix99]

Tried this, but didn't work either:

NavigateUrl='<%# Server.HtmlEncode("~/PropInfo.aspx?PID=" + Eval("PID") + "&Image=" + Request.QueryString["MAPIMAGE"]) %>'

Results in:

http://localhost:2080/PropInfo.aspx?PID=018-793-428 &amp;Image=

I can't believe such a simple request has stumped everyone. I wonder if this could be considered a bug?

 

[jbenson001]

As tperri stated, use the RowDataBoundEvent in the codebehind. Get a reference to the hyperink using FindControl(). Then set the NavigateURL property there.

 

[ca8msm]

I can't believe such a simple request has stumped everyone. I wonder if this could be considered a bug?

Nope it's not a bug, and if search google for HTMLEncode you would will find the simple answer in a matter of seconds.


-------------------------------------------------------

Mark,
[URL unfurl="true"]http://aspnetlibrary.com[/url]
[URL unfurl="true"]http://mdssolutions.co.uk[/url] - Delivering professional ASP.NET solutions
[URL unfurl="true"]http://weblogs.asp.net/marksmith[/url]

 

[tperri]

      <asp:gridview id="CustomersGridView" 
        onrowdatabound="CustomersGridView_RowDataBound" 
        runat="server">
      </asp:gridview>

Keep NavigateUrl='<%# "~/PropInfo.aspx?PID=" + Eval("PID") + "&Image=" + Request.QueryString["MAPIMAGE"] %>' in your template column.

  void CustomersGridView_RowDataBound(Object sender, GridViewRowEventArgs e)
  {

    if(e.Row.RowType == DataControlRowType.DataRow)
    {
         Hyperlink hl = (Hyperlink)e.Rows.FindControl("Hyperlink1");

      hl.NavigateURL = Server.UrlEncode(hl.NavigateURL);
      

    }

  }

Untested.

google: ASP.Net Gridview RowDataBound.