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Yes, in fact many of the "dongle" vendors have API's you can use. However, keep in mind that it is very easy to reverse engineer .NET applications. Your time is better spent on a good business model than protecting your software from intentional, dedicated piracy.
One thing I have been considering, lately, is the concept of custom builds for clients using encryption based on their details. Then it would be much easier to catch a pirate. I haven't worked out all of the details yet, however.
Need software developed? Offering C# development all over the United States, ERL GLOBAL, Inc is the only call you will have to make.
If you don't ask questions the answers won't stand in your way.
Most of this sig is for Google, not ego.
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Hi,
linking a license to some hardware characteristics has some drawbacks; what if the customer for good reasons wants to change the motherboard, the disk, the CPU, the amount of RAM, or anything else. He would like to be sure that won't affect the availability of his licensed software.
Also some internal "unique IDs" can be faked (MAC address) or are unreachable (CPU uniqueID).
I am in favor of adding a specific piece of hardware; the cheapest that holds a unique ID currently is a USB memory stick (I haven't found one yet without a very long ID; AFAIK there is no guarantee that they all will be different, but there will be a great many different values for sure); the nice thing is USB sticks is something your customer may already have or can buy himself.
What remains a problem is the reverse engineering being rather easy on .NET 
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The USB dongle solution is actually more complex and complete than Unique ID, you can load secure software and private keys onto them. Check out Aladdin eTokens for an example.
Need software developed? Offering C# development all over the United States, ERL GLOBAL, Inc is the only call you will have to make.
If you don't ask questions the answers won't stand in your way.
Most of this sig is for Google, not ego.
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Sure, it is also more expensive and requires more effort to set it up. IMO it would not fit well protecting a 10 to 50$ app.
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It makes no sense to secure a 10 to 50 dollar app. beyond keep them honest policies.
Need software developed? Offering C# development all over the United States, ERL GLOBAL, Inc is the only call you will have to make.
If you don't ask questions the answers won't stand in your way.
Most of this sig is for Google, not ego.
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It makes little sense to buy a 10 to 50 dollar app. 
But seriously, that sounds more like it should be on the honor system -- "If you like this software, please consider sending me $10 (or more!) to encourage future development."
That way, the users become the distribution medium, and there is no "piracy".
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Hi,
vs2005 .net2
I have a win form app running on a number of different clients. The clients use a web service to communicate with a database.
When a client loads it instanciates a web service object and the web service instanciates its own log object which writes to a log file on the server specific to that client.
So if 50 clients are running I want 50 web service instances running.
Ive noticed that different clients write to different log files...
When 2 clients load and instanciate a web service - are 2 or 1 web service instances created on the server?
Can I ensure that a client only uses the web service that it instanciates?
Thanks in advance...
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I think that's what is Happening.
A Client can use only the Web Service that it instantiates in your case
Vuyiswa Maseko,
Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.tiyaneProperties.co.za
vuyiswam@its.co.za
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Ok The problem is as follows:
Lets say Client A starts, it instanciates a web service that is configured to write to log file A on the server.
Then say Client B starts, it instanciates a web service that is configured to write to log file B on the server.
The problem is now when I call a web method on Client A it writes to log file B on the server.
So it appears that all clients will write to the file determined by the last instanciated web service. - This is not the way I thought it worked...
However to get around this issue I could modify the log methods to take a parameter (being the log file path) every time it writes...
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Chazzysb wrote: are 2 or 1 web service instances created on the server?
I thought it was only one, but I'm certainly no expert.
I hope an expert can clear this up for both of us.
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Hi
I have to convert a pdf file into doc/word file with all the images and formatting preserved. Searched all the options,tried all the free libraries but nothing seems to be working.
Anyone having idea ??????????
Thanks
Don't walk as if u rule the world,walk as if u don't care who tha Hell rules the world ...
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Already Tried yaar
Any thing else
Thanks 
Don't walk as if u rule the world,walk as if u don't care who tha Hell rules the world ...
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Can you maybe show what you tried? Converting it to plain text didn't work? Why not go pdf->plaintext->doc
shouldn't be that hard
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I am getting the plain text out of a pdf
but not the images and also the formatting of
the characters are not gettable....
Thanks
Don't walk as if u rule the world,walk as if u don't care who tha Hell rules the world ...
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Well that's what plaintext is, it's plain... text...
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Unless you give more details about what you intend to use this information for, I hope that you will get no replies.
Henry Minute
Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
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Why do you hope that? It's a fair question most probably posted by someone who works within Financial Services IT who needs to do this for their job.
Regards,
Rob Philpott.
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The bank or security agency you work for will have this information. You don't need it for any other reason.
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Isn't that a protocol and not a format?
Need software developed? Offering C# development all over the United States, ERL GLOBAL, Inc is the only call you will have to make.
If you don't ask questions the answers won't stand in your way.
Most of this sig is for Google, not ego.
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I am new to Microsoft Report Viewer and trying to a use for the first time. I have just created a blank report in Visual Studio and added a textbox with the valie:
=Fields!vehicle_chassis_number.Value
In Visual Studio, hee is my Code:
data_set = new DataSet();
reportViewer1.ProcessingMode = ProcessingMode.Local;
LocalReport rep = reportViewer1.LocalReport;
rep.ReportPath = @"C:\Users\Jassim\Documents\Visual Studio 2008\Projects\Taajeer\Taajeer\Report1.rdlc";
sql_connection = new SqlConnection("Data Source=.\\SQLEXPRESS;initial catalog=rent_a_car_company;integrated security=true");
sql_connection.Open();
sql_command = new SqlCommand("sp_get_agreement_by_id", sql_connection);
sql_command.CommandType = CommandType.StoredProcedure;
sql_command.Parameters.Add("@vehicle_id", SqlDbType.Int).Value = 1;
sql_adapter = new SqlDataAdapter(sql_command);
sql_adapter.Fill(data_set);
sql_adapter.Dispose();
// sql_connection.Close();
ReportDataSource dsReport = new ReportDataSource();
dsReport.Name = "Invoice_sprocInvoiceView";
dsReport.Value = data_set.Tables["Invoice"];
rep.DataSources.Add(dsReport);
reportViewer1.LocalReport.DataSources.Clear();
reportViewer1.LocalReport.DataSources.Add(dsReport);
reportViewer1.RefreshReport();
rep.Refresh();
this.reportViewer1.RefreshReport();
but I am getting this error message:
Error 1 The Value expression for the textbox ‘textbox3’ refers to the field ‘vehicle_chassis_number’. Report item expressions can only refer to fields within the current data set scope or, if inside an aggregate, the specified data set scope. C:\Users\Jassim\Documents\Visual Studio 2008\Projects\Taajeer\Taajeer\Report1.rdlc Taajeer
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How can I prevent the user from closing a Windows Form if a certain TextBox.Text is empty please?
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Hi,
hook into the Form.FormClosing-event and check if the Textbox is empty. If it is, you can display a message box and set the event value e.Cancel = true. This will prevent the form from closing.
Regards
Sebastian
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hi
This code is helpful for u
write this code in constructor or form load
this.FormClosing += new FormClosingEventHandler(Form1_FormClosing);
then write this method
void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
// Here write whatever condition u want to check
// the condition will true means write this code
e.cancel =true;
}
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