ASP.NET

Gamzun11-Nov-09 19:49

Gamzun

11-Nov-09 19:49

Use __doPostBack in javascript. Google about it you'll lots of sample to understand. Please note Microsoft recommends to use GetPostBackEventReference instead of directly embedding __doPostBack, just google about it too.

Please don't forget to mark 'Good Answer', if you find it really a good one!

Kashif

S.Aijaz11-Nov-09 20:00

S.Aijaz

11-Nov-09 20:00

im using __doPostBack but my problem with that is that i need to give id of a control. i want to call a code behind function that is not handler to any control. i can use a button as well but problem with that is it becomes visible to user. even if i set left position to -100px.
can i call function that is given below, or make button invisible to user even then call its handler from javascript.

private void Test()
{
label1.Text = "Hello";
}

Aman Bhullar11-Nov-09 20:09

Aman Bhullar

11-Nov-09 20:09

Try adding

style="display:none"

to the button.

This may help you

Regards
Aman Bhullar
www.arlivesupport.com[^]

mithun narayanan11-Nov-09 23:35

mithun narayanan

11-Nov-09 23:35

put a hidden button in your page lets say "btnHidden"
Set its style="display:none;"
call btnhidden.Click(); in javascript
watever code written in btnHidden's event will be excuted..
Hope this wil help.

mithun narayanan11-Nov-09 23:37

mithun narayanan

11-Nov-09 23:37

Using Ajax services for grid editing/inserting

S.Aijaz12-Nov-09 0:04

S.Aijaz

12-Nov-09 0:04

Thanx a lot every body for the help

tonymathewt11-Nov-09 18:11

tonymathewt

11-Nov-09 18:11

I am binding a grid with edit/Update templates. On edit/update/insert events there are many text boxes, dropdowns and other grids(data-bound) that gets populated. So the area that's spanned by the update panel is quite vast in the page. That must be the reason for the slow down in page rendering. Could you lead me with some link to any articles or blogs for better alternatives?
I have heard about Ajax Services ASP.Net 3.5 and gone through the below link:
http://www.codegod.de/webappcodegod/GridView-Javascript-Click-Row-and-Ajax-AID302.aspx[^]
It shows how to populate some text boxes on a grid's row click(client-side). But I am confused about other(than textboxes) controls like grids and drop downs.
Is it possible to use both these approaches together ie the grid alone will be kept in an update panel and while editing the use the ajax service approach to populate the controls including other grids and drop downs and while inserting/updating read the values from the controls?

Answers required for the below interview questions

siddisagar11-Nov-09 17:49

siddisagar

11-Nov-09 17:49

1.What is CLR Trigger?
2. What is Icomparable interface?
3. What are Dynamic Controls?
4. Can we use Querystring along with Server.transfer()?
5. Different Types of UDF?
6. Difference between cube and Rollup?

Re: Answers required for the below interview questions

Aman Bhullar11-Nov-09 18:05

Aman Bhullar

11-Nov-09 18:05

siddisagar wrote:
What is CLR Trigger?

Click Here[^]

For Other Question use the Link Answers[^]

Regards
Aman Bhullar
www.arlivesupport.com[^]

Re: Answers required for the below interview questions

Gaurav Dudeja India11-Nov-09 22:12

Gaurav Dudeja India

11-Nov-09 22:12

Great....nice answer.....

Re: Answers required for the below interview questions

Christian Graus11-Nov-09 20:11

Re: Answers required for the below interview questions

11-Nov-09 20:11

Question - if we gave you the answers, do you think you could fool a recruiter into hiring you ?

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.

Shameel12-Nov-09 7:09

Shameel

12-Nov-09 7:09

What do you mean by answers "required" ? You are not even ready to spend some time and effort to find out the answers yourself, you expect others to do it for you? And do you think you can fool around interviewers with what you get here ?

ASP.NET: How to refresh Saved Crystal Report to latest data? Help needed.

ssmaran11-Nov-09 17:41

ssmaran

11-Nov-09 17:41

Hi Friends,

I'm quite new to the ASP.NET + Crystal reports. Please let me know how to open a saved RPT file (Saved with Data and parameters), apply DB login and just refresh with latest data from the database. The user no need to view at the Crystal report viewer from the application. We need to show the result of refreshing either successfully refreshed or not, that's all. I'm proposing to pass the RPT file name as query string the application.

I tried different ways like Reportdoc.refresh(), used RefreshReport() of viewer component, still it doesn't help (Just for testing purpose I used viewer, I do not want the users view the report from application, they will view later with separate offline viewer). I'm getting inconsistent error mesgs like 'Login failed / Application server failed etc.

Any one has sample code on how to achieve this. Please help providng steps to do and any events we need to handle etc.

Appreciate your your help on this.

Thanks.

Problem with file path

Maxdd 711-Nov-09 15:43

11-Nov-09 15:43

I'm trying to use a upload form to read a file. The problem is, I cant access full path of the file so I can read wherever he is.

The form is something like this:

<form id="Form1" enctype="multipart/form-data" runat="server">
<tr>
  <td>Escolha ficheiro:</td>
  <td><input id="upl" type="file" runat="server"></td>
</tr>
<tr>
  <td colspan="2">
  <input type="button" id="upload" value="Inserir" 
                    OnServerClick="uploadClick" runat="server">
  </td>
</tr>
</form>

The problem its here:

string path;
     path = upl.Value;
    Response.Write(path);

Using VS 2008 I can see that when I use "Value" I am "acessing full file path on client's computer". Its exactly what I want but I'm getting on the output just the name of the file. Its very strange because also when I browse the file the textfield shows the full path. Also, if I change the type="file" to type="text" and then I input the path manually, everything works right.

What am I doing wrong?

Christian Graus11-Nov-09 15:59

11-Nov-09 15:59

I would say that you have no idea how ASP.NET works. Assuming you got the full path to the file on the client's machine, what would you hope to do with it ?

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.

Maxdd 711-Nov-09 16:02

11-Nov-09 16:02

Do .txt data to SQL table operation. I'm not doing upload operation, I'm doing insert operation using upload form. The client machine is always the user machine so there's no problem. The following line

its: string[] data = File.ReadAllLines(path);

If there's another (and better) way, please say to me.

Christian Graus11-Nov-09 16:08

11-Nov-09 16:08

Why are you using pure HTML and not server controls ? Why not use a server control and just grab the file data from the stream you get passed ? Surely you're not saying your application is only ever used by someone who is on the server ? If it's never used over the internet, or a LAN, why use ASP.NET at all ?

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.

Maxdd 711-Nov-09 16:16

11-Nov-09 16:16

Old habits...

What I meant to say is that the method I was trying to use works because the file its always on client side, so why not open and read data on client side and write it on server side?

I work on ASP.NET less than 48 hours so I dont know a server control to do that.

By server control you mean something like this: ?

<asp:FileUpload ID="FileUpload1" runat="server" />

What would be the diference?

Christian Graus11-Nov-09 16:20

11-Nov-09 16:20

Maxdd 7 wrote:
so why not open and read data on client side

Because your C# code never runs on the client, it runs on the server.

Maxdd 7 wrote:
What would be the diference?

This control has a property that contains the bytes of the file in question.

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.

Maxdd 711-Nov-09 17:11

11-Nov-09 17:11

I followed your advice and done:

caminho = Path.GetFullPath(FileUploadControl.PostedFile.FileName);

and

cam = Path.GetFullPath(FileUploadControl.PostedFile.FileName);

and another tries, and always have same result:

C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\file.txt (is not even the same hard drive)

I googled about it, and looks like File Upload Control does not allow getting full path of client's machine. They say its a security thing.

Christian Graus11-Nov-09 20:08

Re: Problem with file path [modified]

11-Nov-09 20:08

You didn't remotely follow my advice. you CANNOT access the file from the server to the client. The PostedFile property has a property which contains the file contents.

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.

Maxdd 712-Nov-09 6:57

Same page, different access - use Sessions?

12-Nov-09 6:57

You are right.

I found this.

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.fileupload.postedfile.aspx[^]

I've adapted to my program, but having the problem I tought. If I use streams to read the file, I will not have text data.

So I'm trying convert that stream data using:

StreamReader reader = new StreamReader( myStream );
string text = reader.ReadToEnd();

and

byte[] bytes = new byte[myStream.Length];
        string data = Encoding.ASCII.GetString(bytes);

But its not working Sniff | :^)

EDIT:

I did this and its finally working Big Grin | :-D

byte[] bytes = new byte[myStream.Length];
    myStream.Position = 0;
    myStream.Read(bytes, 0, (int)myStream.Length);
    string data = Encoding.ASCII.GetString(bytes);

modified on Thursday, November 12, 2009 1:05 PM

Maxdd 711-Nov-09 9:28

Re: Same page, different access - use Sessions?

11-Nov-09 9:28

I worked many time with PHP, and always used Sessions variables. For example: I have two users, with two different access level (lets say admin is 1 user is 2). The webpage as an ordinary table with information. Admin can view and edit, but user can only view.

With PHP what I did is define the access level on a field (SQL table) of the table 'Users', and then, depending on the value of that field I do something like:

index.php (..)

if($_SESSION['level'] == 1)
include(indexAdmin.php)

if($_SESSION['level'] == 2)
include(indexUser.php)

Do you see the point? I need to do something similar with ASP.NET 3.5 C# coding, and I dont want to use and create groups on web.config.

What can I do ?

Christian Graus11-Nov-09 9:30

Re: Same page, different access - use Sessions?

11-Nov-09 9:30

The session works somewhat the same, except instead of an include to pull in php code, you would actually write code to show the menu items you want to show.

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.

Maxdd 711-Nov-09 9:45