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Have a look at this free C# Zip/Unzip library:
#ziplib[^]
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Hi all,
Can I get any .net developpped library, which gives the same functionality as DSO Framer control. Because the DSO Framer
control uses unmanaged code which gives problem in web applications when hosted in clients local machine.
So I need any .net developped tool to get these functioanlities done. I tried with aspose, but to change the document again
we need to change the code, or we have to fight with sumo to make it independent of document format. So please help me in
this. You can email me at : aleem076@gmail.com.
Thank you.
S/W Engineer
Akebono Soft Technologies
aleem_abdul@akebonosoft.com.
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Hi all,
Sorry for the real newbie question, but I'm suffering with understanding how C# calls methods within the same class (as well as outside classes). I've tried to simplify the problem to the code below. I'm afraid that I don't understand why, within the same namespace and class, Main can not call otherClass. I keep getting the error, "An object reference is required for non-static field, method or property 'tester.Form1.otherClass(int);'.
I confess I also struggle to understand why I can call another class method, bu t can not if the call is encapuslated within an if{ }else { } loop. I'm probably being neanderthal, but hey, any help appreciated. Again, sorry for the newbie q, but we were all newbies once, eh?!
static void Main()
{
Application.Run(new Form1());
int k = 1;
if (k==1)
{
otherClass(5);
}
else
{
otherClass(2);
}
}
public void otherClass(int j)
{
int i = 5;
i = i + j;
MessageBox.Show("hello" + j);
}
Jerry
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Application.Run(someForm) will show that form, and run a message loop on it;
the statements that follow are normally not reached. So your if(k) stuff
should not be there but somewhere inside your form; this could be:
- in the form constructor
- in the form's OnLoad() method
- in another event handler, e.g. a myButton_Clicked(...) handler associated with a
button on your form. See example.
private void btnStart_Click(object sender, System.EventArgs e) {
log("button Start got clicked");
doSomething();
}
private void log(string s) {
Console.WriteLine(s);
}
private void doSomething() {
log("doing something");
}
Furthermore, dont use the word Class in a method name, it will confuse you.
May I suggest you read some book on C#.NET and/or have a look at some of the
beginner's articles here on CodeProject.
Luc Pattyn
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As an alternative, when you do not need a Windows application (=application with
a GUI = geaphical user interface), you can choose a "Console application". This gives
a single window (the console), that displays all output of Console.WriteLine()
(on a Windows application, such output is lost, unless running from inside Visual Studio,
which captures that output in the "Output" pane).
A console application does not include an "Application.Run()" statement at all;
you can add code to the Main method as much as you want.
If you do need a GUI, stick with the Windows application and move your code, as per
my previous message.
Suggested reading[^]
Luc Pattyn
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Main is a static method and otherClass (Which BTW should be in PascalCase) is an instance method, which means an instance is required for use. The two options are 1) Change the method signature for other class to be static, ie. public static void OtherClass(int j) or the create an instance of your class which I do not see the name of. So in your main
MyClass myClass = new MyClass();
myClass.OtherClass(5);
Actually, on further examination, this seems to be a generated class called Form1. If you move your logic from your Main method into the default constructor for Form1 it may work.
On two occasions I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question. - Charles Babbage
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Aha! Now I read your answer it seems so simple, but of course it eluded me (maybe because I'm new at this!!).Thank you, Ennis. That makes sense and is most helpful. Have a good new year.
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Hello,
My question may be very dumb  but I couldn't change my web.config using the the following code:
XmlDocument doc = new XmlDocument();
doc.XmlResolver = null;
doc.Load(@"C:\Web.config");
XmlNode node = doc.SelectSingleNode("/configuration/appSettings");
I don't know why it always returns null.
Do you know what I stupidly did wrong?
Thanks,
Johnny
Here is my file
<?xml version="1.0"?>
<!--
Note: As an alternative to hand editing this file you can use the
web admin tool to configure settings for your application. Use
the Website->Asp.Net Configuration option in Visual Studio.
A full list of settings and comments can be found in
machine.config.comments usually located in
\Windows\Microsoft.Net\Framework\v2.x\Config
-->
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
<appSettings>
<add key="AuthorizationContext" value="Office" />
</appSettings>
<system.web>
<!--
Set compilation debug="true" to insert debugging
symbols into the compiled page. Because this
affects performance, set this value to true only
during development.
-->
<compilation debug="false">
<assemblies>
<add assembly="System.Transactions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add assembly="System.Management, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System.DirectoryServices, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
</assemblies>
</compilation>
<!--
The <authentication> section enables configuration
of the security authentication mode used by
ASP.NET to identify an incoming user.
-->
<authentication mode="abc" />
<!--
The <customErrors> section enables configuration
of what to do if/when an unhandled error occurs
during the execution of a request. Specifically,
it enables developers to configure html error pages
to be displayed in place of a error stack trace.
<customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
<error statusCode="403" redirect="NoAccess.htm" />
<error statusCode="404" redirect="FileNotFound.htm" />
</customErrors>
-->
<!-- Increase the timeout to 2 hours. -->
<httpRuntime executionTimeout="7200" />
<webServices>
<protocols>
<add name="AnyHttpSoap" />
<remove name="HttpGet" />
<remove name="HttpPost" />
<remove name="HttpPostLocalhost" />
<remove name="Unknown" />
</protocols>
<soapExtensionTypes>
</soapExtensionTypes>
</webServices>
</system.web>
</configuration>
-- modified at 20:25 Friday 29th December, 2006
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If the XPath parameter passed to the SelectSingleNode() method does not include a prefix, it is assumed that the namespace URI is the empty namespace. If your XML includes a default namespace (and that is your actual case), you must add a prefix and namespace URI to the XmlNamespaceManager; otherwise, you do not get your node selected 
So, replace your line:
XmlNode node = doc.SelectSingleNode("/configuration/appSettings");
with the following piece of code:
XmlNamespaceManager nsmgr = new XmlNamespaceManager(doc.NameTable);<br />
nsmgr.AddNamespace"pfx", "http://schemas.microsoft.com/.NetConfiguration/v2.0");<br />
XmlNode node = doc.SelectSingleNode("//pfx:appSettings", nsmgr);
SkyWalker
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How to convert a Decimal number to Binary and Binary to Decimal.
Exp: 9 => 1001, 1001 => 9.
Help.
Vasildb
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That project doesn't work because I have Visual Studio 2003.
Help.
Vasildb
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It wouldnt be hard to make the project work on a more recent .NET/Visual Studio version.
Anyway, you do not actually need the project, just look in the code on how they do
conversions...
Luc Pattyn
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I can't understand that, I a newbie.
Please tell me something easy for understanding.
Vasildb
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http://www.is.wayne.edu/olmt/binary/page3.htm
Take a look at this site, it covers the conversion algorithm. It's really simple.
Just remember that binary numbers are powers of two, like that:
1101 = 13
read the binary number from right to left:
2 ^ 0 + | 1
0 ^ 1 + | 0
2 ^ 2 + | 4
2 ^ 3 | 8
_______
13
regards
modified 12-Sep-18 21:01pm.
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Vasildb wrote: That project doesn't work because I have Visual Studio 2003
You should have mentioned it in your original post. Look at the code and get a general idea how to do the conversions or bump up to VS 2005...
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Hope it's not too late!
private static Int32 BinStringToInt32(string value)
{
return Convert.ToInt32(value,2);
}
private static string Int32ToBinString(Int32 value)
{
return Convert.ToString(value,2).PadLeft(32,'0');
}
All the best,
Martin
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I am working in C#.net and have a Datagrid control. The grid seems to work ok except for a new problem I have noticed.
When I resize the main form (and consequently the Datagrid) and scroll around the Datagrid using the forms scroll bars and then maximize the form and the Datagrid I notice that the Datagrid does not seem to repaint properly. The entire grid design is messed up.
I suspect this may be a repaint problem. Somehow and somewhere I need to force the grid to repaint.
I would appreciate any tips as to how and where I should do this.
Thanks, Vern
Vern
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I can't really understand what your problem is, maybe you should be a little more clear on when the datagrid does not repaint itself correctly. As for HOW you can repaint it, datagrid.Invalidate(); should do the trick
Regards,
Vandra Akos
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Vandra:
Thanks for the tip about the datagrid.Validate(). I put this in the Scroll event of the datagrid and this solved the problem I was having.
Let me try to explain the problem I was having again:
First I resize the datagrid so that the scroll bars show up. Then I scroll around the datagrid. Finally I resize the Datagrid so that it fills the screen. Now when I scroll again, the grid is messed up. Some columns appear twice, some don’t appear at all, its just really messed up.
Anyway, when I put the Datagrid.Invalidate() in the Scroll event, all is well.
Thanks again for your help.
Vern
Vern
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i am trying to move a panel with:
pnlProgressBar.Location.X = pnlProgressBar.Location.X + 1;
for a progress bar. It is inside a while loop, but the following error occurs: "Cannot modify the return value of 'System.Windows.Control.Location' because it is not a variable"
I want it to later be able to actually show the amount of progress it has actually made, but first i need it to be able to move. If anybody else has a better way of making a progress bar that is only one bar, unlike the built in progress bar, please tell me. thanks in advance.
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dsl/fahk wrote: Cannot modify the return value of 'System.Windows.Control.Location' because it is not a variable"
Location returns a Point structure. Point is immutable meaning once it has been created it cannot be changed. You have to assign a new Point to the Location property of the control.
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Hello,
I would like to do what I call background printing. What this means is the user clicks a print button or a link to print a document without acutally having the document visible. I have searched the site for this and haven't found a posting covering this.
The only way I could think to make this happen would be to load the document in a hidden control and print from there. This seems kind of clunky and I was wondering if there was a more elegant approach.
Thanks in advance,
Eric
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