ASP.NET

2-Nov-09 20:47

Hi all.

I'm programming an site, where I create a file on server side, an I need it to be downloaded to client after it finishes.

At this moment, I am coding it step by step:

- A button to create the file
- Another button to download it, once it is created.

I can create the file correctly, but when I try to download it this is what happens:

There is an asp:textbox where I have the name of the file (I get the path with Request.ServerVariables("APPL_PHYSICAL_PATH") so that's OK)
Then I press the input type=button control I have, and call a javascript function like this:

<script type="text/javascript"> 
        function Download(nom_fich) 
        { 
        window.open("Downloadfile.aspx?ar=" + nom_fich,"Download","width=10,height=10,resizable=yes;top=200,left=150,menubar=no,toolbar=no,status=no,location=no");
        } 
</script>

Once I am on the Page_Load event of the Downloadfile.aspx page, I get the parameter from "ar" and I just get "undefined".

I don't know if the problem is when taking the file name from the asp:textbox control, because when I get it from an input control, it is OK...

Please, help me, I have been searching for an answer for so long, and I can't stand it anymore.
Thanks in advance.

PS: This is the input button I use:

<input id="Bt_Descarga" class="" visible="TRUE" style="width: 100px" type="button" value="Download" onclick="Download(txtFile.text)" />

And this is the asp:textbox control I need to take the filename from.

<asp:Textbox ID="txtFichero" runat="server" CssClass="cuerpopar" Width="100%"></asp:Textbox>  <pre> 

<div class="ForumSig">Time to come clean...

Vive y deja vivir / Live and let live

Javier</div>

Christian Graus2-Nov-09 20:49

2-Nov-09 20:49

Have you looked at the URL at all ?

garfield185 wrote:
onclick="Download(txtFile.text)" />

This quite obviously does not work. You need to get the client side id of the control, then use document.getElementById to look up the control, then get it's actual text. You can use the alert function to debug your code, if you do that now, you'll find that it's null, which is why you're getting the result you are.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

garfield1852-Nov-09 21:16

2-Nov-09 21:16

OK, I have no idea what you are talking about... Sorry!!! Could you please write a clue? Laugh | :laugh:

Time to come clean...

Vive y deja vivir / Live and let live

Javier

Christian Graus2-Nov-09 21:23

2-Nov-09 21:23

txtFile.Text is not valid javascript. So, it's not working. On the server side, you can get the client side id of your control ( which is not even called txtFile, from what you posted ), and then you can use document.getElementById(clientId) ( where clientId contains that id you got from the server ), to get a reference to the actual control. Then you can get the text of the control ( I think .value is what you want, it's sure not .text ).

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

garfield1852-Nov-09 21:34

2-Nov-09 21:34

Do you know any web page with an example of all this you are writing?

Time to come clean...

Vive y deja vivir / Live and let live

Javier

Christian Graus2-Nov-09 21:57

2-Nov-09 21:57

Well, if I were to google getElementById, I know I'd easily find that part of it. As for the rest, just use RegisterClientScript to emit javascript from the server that creates a variable which contains the client side id of your textbox, using the ClientID property.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

sohighthesky3-Nov-09 0:03

sohighthesky

3-Nov-09 0:03

just:
<pre>
onclick="Download(document.getElementById('txtFile').value)"
</pre>

[Message Deleted]

Imran Khan Pathan2-Nov-09 20:54

2-Nov-09 20:54

[Message Deleted]

Christian Graus2-Nov-09 20:55

2-Nov-09 20:55

I think you'll find that this is utterly wrong.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Imran Khan Pathan2-Nov-09 20:57

2-Nov-09 20:57

Yes. I know so I have deleted that post after posting it.

Thanks

please don't forget to vote on the post that helped you.

Abhishek Sur2-Nov-09 21:36

2-Nov-09 21:36

garfield185 wrote:

Why dont you pass :
onclick = "javascript:Download(document.getElementById('<%=txtFile.ClientId%>').value);"
I hope this would work perfectly. If not let me know.

Abhishek Sur
Don't forget to click "Good Answer" if you like this Solution.
My Latest Articles-->
Microsoft Bing MAP using Javascript
CLR objects in SQL Server 2005
Uncommon C# Keywords/xml>

garfield1852-Nov-09 21:45

2-Nov-09 21:45

YOU ARE THE BEST!!!!

It works perfectly, thanks a lot!!!

Time to come clean...

Vive y deja vivir / Live and let live

Javier

Abhishek Sur2-Nov-09 21:48

2-Nov-09 21:48

you are most welcome my friend..
Cheers. Rose | [Rose]

Abhishek Sur
Don't forget to click "Good Answer" if you like this Solution.
My Latest Articles-->
Microsoft Bing MAP using Javascript
CLR objects in SQL Server 2005
Uncommon C# Keywords/xml>

Christian Graus2-Nov-09 21:58

2-Nov-09 21:58

Interesting, when I've tried to do that directly, it's not done the translation to emit the client id, it's appeared in my javascript verbatim. That's why I advocate storing the client side id in a variable.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Abhishek Sur2-Nov-09 22:21

2-Nov-09 22:21

Yes... Its the same thing.
I dont know why he didnt understand. Smile | :)

Abhishek Sur
Don't forget to click "Good Answer" if you like this Solution.
My Latest Articles-->
Microsoft Bing MAP using Javascript
CLR objects in SQL Server 2005
Uncommon C# Keywords/xml>

Christian Graus2-Nov-09 22:33

2-Nov-09 22:33

Well, your solution was so simple that you could give him one line of code. I do tend not to give code, because it makes people think and understand, but in this case, my experience made me feel that may not actually work. Perhaps I've just done it in a specific context where it wouldn't process the server tags ?

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Abhishek Sur3-Nov-09 0:07

Get Controls in htmlstring

3-Nov-09 0:07

Might be. Can you show me where it is not working.

I think there must be problem of mixing up server tags within server side controls.
For example If you write :
<asp:TextBox ID="txt" Text="<%= this.somevariable %>" runat="server" />

You will actually end up with a textbox which has value
<%=this.somevariable%>

rather than the value of the variable.
on the other hand if you write :
<input type="text" id="txt" value="<%= this.somevariable %>" />

It will properly show the value of the variable in the textbox.

In your case this might be the issue. Smile | :)

Abhishek Sur
Don't forget to click "Good Answer" if you like this Solution.
My Latest Articles-->
Microsoft Bing MAP using Javascript
CLR objects in SQL Server 2005
Uncommon C# Keywords/xml>

Imran Khan Pathan2-Nov-09 20:36

2-Nov-09 20:36

Hey.
I am working on application in which I want to create dynamic controls and retrives them in html string.

for example.

public string CreateControl()
{
HtmlTable hTable = new HtmlTable();
hTable.CellPadding = 2;
hTable.CellSpacing = 2;
hTable.Width = "100%";

HtmlTableRow hRow = new HtmlTableRow();
HtmlTableCell hCell = new HtmlTableCell();

hCell.InnerText = "Username";
hRow.Cells.Add(hCell);
hTable.Rows.Add(hRow);
// Now here I want to return created controls in html string.
}

It should be like this
<table CellPadding=2 CellSpacing = 2 Width=100><tr><td>Username</td></tr></table>

Thanks
Imrankhan

please don't forget to vote on the post that helped you.

Christian Graus2-Nov-09 20:41

2-Nov-09 20:41

Your best bet to do that, is to use a string builder to generate the HTML yourself.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Imran Khan Pathan2-Nov-09 20:49

2-Nov-09 20:49

Christian Graus wrote:
Your best bet to do that, is to use a string builder to generate the HTML yourself.

I have to write all controls in HTML and I dont want to write inlinne code at server side. I know It is possible because I had done it before one year ago when I worked on custom control but now I forget it. D'Oh! | :doh:

regard
Imrankhan

please don't forget to vote on the post that helped you.

Christian Graus2-Nov-09 20:51

2-Nov-09 20:51

You're right, 5 seconds with google got me this:

public string RenderControl(Control ctrl) 
{
    StringBuilder sb = new StringBuilder();
    StringWriter tw = new StringWriter(sb);
    HtmlTextWriter hw = new HtmlTextWriter(tw);

    ctrl.RenderControl(hw);
    return sb.ToString();
}

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Imran Khan Pathan2-Nov-09 21:02

2-Nov-09 21:02

Thanks Christian.

please don't forget to vote on the post that helped you.