C# Discussion Boards - CodeProject

Henry Minute19-Jan-11 15:10

19-Jan-11 15:10

Microsoft also released a series "Build A Program NOW!" (Their italics), which did what you want. A while ago they released them free on the web.

Only problem, I cannot find the page at the moment. Perhaps if you have time you can do a better search.

[Edit]
Correction. Found it.[^] Smile | :)

[/Edit]

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.”
I wouldn't let CG touch my Abacus!

Re: C# projects - textbook

V.20-Jan-11 0:22

20-Jan-11 0:22

Henry Minute wrote:
Microsoft also released a series "Build A Program NOW!"

This resulted in the creation of VB no doubt? Poke tongue | ;-P

Re: C# projects - textbook

fjdiewornncalwe20-Jan-11 3:41

fjdiewornncalwe

20-Jan-11 3:41

Unlikely, because you missed the "which did what you want" part...

I wasn't, now I am, then I won't be anymore.

Re: C# projects - textbook

Richard MacCutchan19-Jan-11 21:49

Richard MacCutchan

19-Jan-11 21:49

Try some of the C# articles here on CodeProject; there are lots of excellent samples.

I must get a clever new signature for 2011.

Re: C# projects - textbook

RaviRanjanKr26-Jan-11 2:46

RaviRanjanKr

26-Jan-11 2:46

you have already got a bundle of perfect answer for learn C# Language.
I will also suggest you to read all books and links refer by others OP including this Link[C# Language on MSDN][^]
"C# HOW to program" is one of the good book which I read when I started Learning C#
you can download it from here[^].

Read a XML in web service

abbd19-Jan-11 6:33

abbd

19-Jan-11 6:33

hello,

I would use my web service to get a XML file, i try for :

My web service :

<br />
public class Service1 : System.Web.Services.WebService<br />
    {<br />
<br />
        [WebMethod]<br />
        public string GetFirstName(XmlNode XmlNodePassed)<br />
        {<br />
            // Create a new XmLDocument object.<br />
            XmlDocument XmlDocumentObject = new XmlDocument();<br />
<br />
            // Load the XmlNode into the XmlDocument object.<br />
            XmlDocumentObject.LoadXml(XmlNodePassed.OuterXml);<br />
<br />
            // Find the first name of the author.<br />
            XmlNodeList XmlNodeListObj = XmlDocumentObject.GetElementsByTagName("first-name");<br />
<br />
            // Return the first name.<br />
            return XmlNodeListObj[0].ChildNodes[0].Value;<br />
        }<br />
    }<br />

i would consumme a service as :

<br />
public static XmlDocument GetXmlDocument()<br />
        {<br />
            // Create an XmlDocument object.<br />
            XmlDocument xmlDocumentObject = new XmlDocument();<br />
<br />
            xmlDocumentObject.LoadXml("<book genre=\"novel\" publicationdate=\"1997\" " +<br />
            "      ISBN=\"1-861001-57-5\">" +<br />
            "  <title>Pride And Prejudice</title>" +<br />
            "  <author>" +<br />
            "    <first-name>Jane</first-name>" +<br />
            "    <last-name>Austen</last-name>" +<br />
            "  </author>" +<br />
            "  <price>24.95</price>" +<br />
            "</book>");<br />
<br />
            <br />
            // Return the created XmlDocument object.<br />
            return (xmlDocumentObject);<br />
        }<br />
        static void Main(string[] args)<br />
        {<br />
         <br />
            XmlDocument xml = GetXmlDocument();<br />
            ServiceReference1.Service1SoapClient rr = new ConsoleApplication1.ServiceReference1.Service1SoapClient();<br />
            string gg = rr.GetFirstName(XmlDocumentObject);<br />
        }<br />

Unfortunatly, i have an error : cant convert XMLdocument to XMLElment.

Thank you verry mutch.

Re: Read a XML in web service

Henry Minute19-Jan-11 7:54

Henry Minute

19-Jan-11 7:54

You have been around CP long enough now to know the correct way to format code snippets in your questions.

For goodness sake use <pre>your code goes here</pre> tags.

It doesn't matter if you think the way you do it is prettier or whatever the reason is. Do you not realize that red/blue colour blindness is the most common form. You are actually making it harder for people to help you.

Re: Read a XML in web service

OriginalGriff19-Jan-11 8:28

OriginalGriff

19-Jan-11 8:28

Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together.

Re: Read a XML in web service

Dan Mos19-Jan-11 8:26

Dan Mos

19-Jan-11 8:26

First of all Thumbs Up | :thumbsup:

for Henry's sugestion.

Second of all is pretty clear(actually not) what happend.

In the Main method you call GetFirstName() but you pass a xml document instead of a XMLNode.
It can't convert from xmlDoc to xmlElem/Node.

Also inside Main there is no XmlDocumentObject declaration/creation just xml in the line:

XmlDocument xml = GetXmlDocument();

All the best,

Dan

Re: Read a XML in web service

abbd19-Jan-11 21:23

abbd

19-Jan-11 21:23

Hello,

Thank you verry mutch for your answer, so, i replace the input parameters and i set public static XmlDocument GetXmlDocument(), and i have the same probleme, thank you verry mutch.

p/invoke _stat

DanielWehrle19-Jan-11 5:16

DanielWehrle

19-Jan-11 5:16

Hi,

does anyone know how to call _stat with p/invoke from C#?

it is posible to use File.Get* instead, but I need the direct call to
investigate something on the file system.

Thanks

Re: p/invoke _stat

Richard MacCutchan19-Jan-11 5:53

Richard MacCutchan

19-Jan-11 5:53

Although this link[^] is not for _stat() it should help you figure it out.

I must get a clever new signature for 2011.

Re: p/invoke _stat

DanielWehrle19-Jan-11 20:37

DanielWehrle

19-Jan-11 20:37

No sorry it is only fclose on the linkt, I check pinvoke.net before my post and did not find anything.

Re: p/invoke _stat

Richard MacCutchan19-Jan-11 21:32

Richard MacCutchan

19-Jan-11 21:32

DanielWehrle wrote:
it is only fclose on the link

Yes, I know that, but if you look at the sample you should be able to figure out how to code the call for the _stat() function.

I must get a clever new signature for 2011.

Re: p/invoke _stat

DanielWehrle19-Jan-11 21:44

DanielWehrle

19-Jan-11 21:44

The pure _stat call is not my reral problem, but I have no idear how to define the struct containing the _stat result

Re: p/invoke _stat

DanielWehrle20-Jan-11 0:05

DanielWehrle

20-Jan-11 0:05

I try to do itz like:

[StructLayout(LayoutKind.Sequential)]
public struct STAT
{
public uint st_dev;
public ushort st_ino;
public ushort st_mode;
public short st_nlink;
public short st_uid;
public short st_gid;
public uint st_rdev;
public long st_size;
public long st_atime;
public long st_mtime;
public long st_ctime;
}

[DllImport("msvcrt.dll", SetLastError = true)]
static extern int _stat(string file, ref STAT buf);

But recive an PInvoke Imbalance Exception.

Re: p/invoke _stat

Tony Richards20-Jan-11 0:42

Tony Richards

20-Jan-11 0:42

Have you checked the calling convention? The last time I got an error like this, this was the reason.

Oh, and please use <pre></pre> to make your code clearer

Re: p/invoke _stat

DanielWehrle20-Jan-11 1:35

DanielWehrle

20-Jan-11 1:35

Yes but I'm not sure what the calling conventions for the _stat call are.

All I know is from: http://msdn.microsoft.com/en-us/library/14h5k7ff%28vs.71%29.aspx

Re: p/invoke _stat

Richard MacCutchan20-Jan-11 1:27

Richard MacCutchan

20-Jan-11 1:27

DanielWehrle wrote:
But recive an PInvoke Imbalance Exception.

If you have an exception, it really is better if you post the exact text that you receive, rather than your interpretation of it. Also the line(s) of code that caused the exception; always included within <pre></pre> tags for readability.

I must get a clever new signature for 2011.

Re: p/invoke _stat

DanielWehrle20-Jan-11 1:47

DanielWehrle

20-Jan-11 1:47

PInvokeStackImbalance
Message: A call to PInvoke function 'SharpFastStatWrite!SharpFastStatWrite.Writer::_stat' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.

Thanks

Re: p/invoke _stat

Richard MacCutchan20-Jan-11 3:50

Richard MacCutchan

20-Jan-11 3:50

Well this took me some time to figure out but I finally noticed that the function prototype for _stat is

int __cdecl _stat(_In_z_ const char * _Name, _Out_ struct _stat32 * _Stat);

and that __cdecl is not the standard calling convention. So I changed the DLLImport as follows

[DllImport("msvcrt.dll", SetLastError = true, CallingConvention=CallingConvention.Cdecl)]

and it now works.

Give it a try.

I must get a clever new signature for 2011.

Re: p/invoke _stat

Richard MacCutchan20-Jan-11 7:14

Richard MacCutchan

20-Jan-11 7:14

Further information, the STAT structure should be as follows:

public struct STAT
{
    public uint st_dev;
    public ushort st_ino;
    public ushort st_mode;
    public short st_nlink;
    public short st_uid;
    public short st_gid;
    public uint st_rdev;
    public uint st_size;
    public uint st_atime;
    public uint st_mtime;
    public uint st_ctime;
}

Note the last four entries are uint rather than long values.

I must get a clever new signature for 2011.

Re: p/invoke _stat

DanielWehrle20-Jan-11 20:29

DanielWehrle

20-Jan-11 20:29

Thanks, now it work.

Re: p/invoke _stat

Richard MacCutchan20-Jan-11 21:31

Richard MacCutchan

20-Jan-11 21:31

You're welcome; perhaps you would be so kind as to vote my answer (the one with the solution)?

I must get a clever new signature for 2011.

Programming Scanner Hardware

RobScripta19-Jan-11 4:43

RobScripta

19-Jan-11 4:43

I have an application in C# to process scanned invoices. A customer wants to buy a scanner for the application but has these simple requirements:
- Some 50 invoices are received each day, 40 of them single page, 10 multi page
- The 40 single page invoices are put in a stack on the ADF and the "single" button on the scanner is pushed. The scanner then creates 40 files from the 40 invoices, ready for further processing.
- The first multi page invoice is put on the adf and the "multi" button on the scanner is pushed. The scanner then creates 1 (PDF) file from all pages in the adf
- the second multi page invoice etc...

What I want is to program the buttons on the scanner to do exactly that (with resolution and color depth etc). It may be on a network scanner, it may also be an USB scanner (with software running on a dedicated PC).
It must exist, I think it's a reasonable request, but extensive googling gives millions of results but nothing usefull.

Can anybody give me a pointer ?

Rob

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