Self-updating application by using batch files (Need Help) - C# Discussion Boards

Re: Display Assembly Resources in Web Browser (problem with jpg/pdf)

10-May-09 8:09

Hi,

I haven't done this myself, but the way I understand it you must also set the WebBrowser.DocumentType (try "application/pdf"); that should allow you to view a PDF document (or any image) as a web page.

You probably also want images inside web pages, so have a look at embedded images[^].

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

sodevrom10-May-09 8:15

sodevrom

10-May-09 8:15

Hello,
Thank you for the quick reply but unfortunatly the DocumentType is read only Frown | :(

Any other ideeas ?
Thanx

Re: Display Assembly Resources in Web Browser (problem with jpg/pdf)

Luc Pattyn10-May-09 11:00

Re: Display Assembly Resources in Web Browser (problem with jpg/pdf)

10-May-09 11:00

Yes, you are right.

And the data scheme[^] is usable only for small amounts of data, hence small images only, no PDF documents.

I guess the next logical approach is to come up with a simple HTTP server that can provide HTML and PDF; then embed that in the app, andmake the WebBrowser navigate to it.

This seems to be a candidate: Sample HTTP Server Skeleton in C#[^]

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Luc Pattyn10-May-09 13:09

Re: Display Assembly Resources in Web Browser (problem with jpg/pdf)

10-May-09 13:09

Hi,

I now have a simple embedded HTTP server working based on the article I provided a link to.

It gets a PDF document somewhere (from a file!), then serves that to its client, which can be either a regular browser (e.g. FireFox) or a WebBrowser. It still needs a lot of clean-up though, but I wanted to confirm you can make it work.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

sodevrom10-May-09 13:10

sodevrom

10-May-09 13:10

Thank you very much for your help

Self-updating application by using batch files (Need Help)

SimpleData10-May-09 6:28

SimpleData

10-May-09 6:28

Hi I want my application to update itself. As far as I know we can't do this in C# ( or any other language -without workarounds- ) because a file can't change itself while running.

I tried using another method which first downloads the newer executable, creates a batch file which waits for a while for the application to terminate then deletes the main app and replaces it with the newer one, then launches it.

But there is something wrong here I think. The batch file doesn't do everything correctly. Sometimes it doesn't delete itself or the update file, or sometimes newer does anything.

Class:

class updater
{
    public string UpdaterURL = null;
    public string LocalUpdaterLocation = null;

    public int ErrorCounter = 0;


    public void Download()
    {
        if (ErrorCounter == 0)
        {
            WebClient wc = null;
            try
            {
                wc = new WebClient();
                wc.DownloadFile(UpdaterURL, LocalUpdaterLocation);
            }
            catch { ErrorCounter++; }
            finally { if (wc != null) wc.Dispose(); }
        }
    }
    // TODO: Got to make sure that batch file is working correctly.
    public void CreateBatchFile()
    {
        if (ErrorCounter == 0)
        {
            string AppPath = Application.ExecutablePath.Replace(Application.StartupPath, "").Replace(@"\", "");

            StreamWriter sw = null;
            try
            {
                sw = new StreamWriter("update.bat");
                sw.WriteLine("@echo off");
                sw.WriteLine("ping 127.0.0.1 -n 2 -w 1000 > nul");
                sw.WriteLine("ping 127.0.0.1 -n 2 -w 1000 > nul");
                sw.WriteLine("ping 127.0.0.1 -n 2 -w 1000 > nul");
                sw.WriteLine("ping 127.0.0.1 -n 2 -w 1000 > nul");
                sw.WriteLine("ping 127.0.0.1 -n 2 -w 1000 > nul");
                sw.WriteLine("ping 127.0.0.1 -n 2 -w 1000 > nul");
                sw.WriteLine("ping 127.0.0.1 -n 2 -w 1000 > nul");
                sw.WriteLine("ping 127.0.0.1 -n 2 -w 1000 > nul");
                sw.WriteLine("ping 127.0.0.1 -n 2 -w 1000 > nul");
                sw.WriteLine("ping 127.0.0.1 -n 2 -w 1000 > nul");
                sw.WriteLine("deleteexe:");
                sw.WriteLine(@"del """ + AppPath + @"""/Q/S>nul");
                sw.WriteLine(@"if exists """ + AppPath + @""" goto deleteexe");
                sw.WriteLine("rename " + LocalUpdaterLocation + " " + AppPath);
                sw.WriteLine(AppPath);
            }
            catch { ErrorCounter++; }
            finally { if (sw != null) { sw.Close(); sw.Dispose(); } }
        }
    }

    public void StartUpdating()
    {
        if (ErrorCounter == 0)
        {
            Process prc = new Process();
            prc.StartInfo.FileName = "update.bat";
            prc.StartInfo.ErrorDialog = false;
            prc.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;

            prc.Start();
            Environment.Exit(0);
        }
    }
}

How I call it:

updater upd = new updater();

upd.UpdaterURL = "http://.../update.exe";
upd.LocalUpdaterLocation = "update.exe";
upd.ErrorCounter = 0;

upd.Download();
upd.CreateBatchFile();
upd.StartUpdating();

Thanks in advance,
Can

Re: Self-updating application by using batch files (Need Help)

Giorgi Dalakishvili10-May-09 7:00

Giorgi Dalakishvili

10-May-09 7:00

Just use this library: .NET Client Applications: .NET Application Updater Component[^]

Giorgi Dalakishvili

#region signature
My Articles

Asynchronous Registry Notification Using Strongly-typed WMI Classes in .NET [^]

My blog
#endregion

Re: Self-updating application by using batch files (Need Help)

SimpleData10-May-09 7:22

SimpleData

10-May-09 7:22

Thank you for your answer.

I have read that article you have linked. It is a sophisticated solution. But there is only one problem, There should be an AppStart.exe to start the updated solution.

I can only have one executable, that's why I was trying to work with batch files.

multine textbox maxlenght depending of height and widht control

ramaluciano10-May-09 4:39

ramaluciano

10-May-09 4:39

Hi people!

I don´t know how make a functionality to write text in a multiline richtext o multiline textbox, and set maxlenght property depending of width and height of the control. ( the control take diferent sizes in runtime ).

I´m using MeasureString method of System.Drawing.Graphics, but I don´t know if is the correct way.

Somebody know something ,please?

I home your help,
best regards.

PS: sorry for my english Smile | :)

Re: multine textbox maxlenght depending of height and widht control

Henry Minute10-May-09 5:13

Re: multine textbox maxlenght depending of height and widht control

10-May-09 5:13

Can you not set the ScrollBars property to either Horizontal, Vertical or Both.

Henry Minute

Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”

ramaluciano10-May-09 5:45

ramaluciano

10-May-09 5:45

Hi,
the requirement for this functionality, the scrollbars must be set to "None".

thanks anyway

Re: multine textbox maxlenght depending of height and widht control

Henry Minute10-May-09 6:37

process modifying/openning file

10-May-09 6:37

The only method I can think of would only give an approximation, so for what it is worth.

The VisualTextRenderer class has a GetTextMetrics method. The structure returned contains details such as FontHeight, AverageCharWidth, MaxCharWidth etc. for the Font and Graphics it is given.

You could divide the height of the TextBox by the FontHeight to give the number of lines. Then use either Average or Max Width to calculate how many characters fit on a line.

I have no idea how accurate this would be though.

lost_in_code10-May-09 2:27

lost_in_code

10-May-09 2:27

hi,can someone help me with this....
i want to know how to get the file name currently being modified/openned by certain process, i know about FileSystemWatcher tool but i want to get it in another way(i mean what process x is openning or modifying at a specific moment).
is there any API or c# code to it???
any help is appreciated

Re: process modifying/openning file

Dave Kreskowiak10-May-09 6:04

Dave Kreskowiak

10-May-09 6:04

lost_in_code wrote:
i want to know how to get the file name currently being modified/openned by certain proc

Unless the process exposes some kind of ommunication mechanism, there's no way to tell.

lost_in_code wrote:
i know about FileSystemWatcher tool

The FSW won't work for you anyway since it can't tell that a file was opened at all. All it can see is the changes in the files timestamp attributes, which don't change if you open a file for read access.

lost_in_code wrote:
i want to get it in another way(i mean what process x is openning or modifying at a specific moment).

The only way I can think of would be to enumerate all the process handles, and all of the file handles in the system and start trying to match them up with each other. But, there is no way to tell an .EXE file from a .DLL file from a .TXT file from a .DOC file, or any other file type. On top of that, most apps out there don't hold files open when they load them, so there's no file handle to try and match up anyway.

The bottom line is what you want to do is extremely difficult and unreliable.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

converting the numeric value to text

jaillani khan10-May-09 2:26

jaillani khan

10-May-09 2:26

with due respect
regardds to all the lover and users of c # dear i am new learner of c# and i have two problums
1. i want to convert the numeric value of text
eg when i enter 100 so it should converted to one hundred
eg i enter in one text box 123 in the other text box should come one hundred and twenty three
2. i want to calculate the value of two text boxes and minusing from thrid and showing in the another text boxes
not on button click but on the text box events (onchange or any one)but it should be textbox event thank you

Re: converting the numeric value to text

Luc Pattyn10-May-09 2:34

Re: converting the numeric value to text

10-May-09 2:34

Hi,

welcome to CodeProject

1.
there are over 20000 articles here; at least one of them deals with Number To Text Converter[^]

2.
TextBox events are explained in the documentation. Use Google to locate them.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

jaillani khan10-May-09 8:22

jaillani khan

10-May-09 8:22

thanks dear
you have givent the links you have given me the code of cpp i really thanks again
bye

New form variables passing

michaelgr110-May-09 1:15

michaelgr1

10-May-09 1:15

Hello,
I have a string variable in Form1. I receive the string from a datagrid
I want to pass it to form2 and use it there as a query to another datagrid in this form. How can i do it? I mean the passing of the variable itself?

Henry Minute10-May-09 1:26

10-May-09 1:26

Have a public property in Form2

public string QueryString
{
    get; set;
}

Then when you create an instance of Form2

Form2 queryForm = new Form2();
queryForm.QueryString = "this is the string";
queryForm.ShowDialog(); // or just .Show()

then in queryForm the string is available to do whatever you want with.

michaelgr110-May-09 1:34

michaelgr1

10-May-09 1:34

Ok.
And do i need to add new windows form or new iherited form (i mean in add new item window in visual studio)?

Henry Minute10-May-09 1:37

10-May-09 1:37

You said that you have a form1 and a form2. Why would you need to add another form? Where I have used queryForm just use your existing form.

michaelgr110-May-09 1:47

michaelgr1

10-May-09 1:47

Yes.
But i haven't add form2 yet. So how do i need to add him (as new window form or inheirted form- How can i know it?)?