C# Discussion Boards - CodeProject

26-Mar-04 3:36

Load the document and use the appropriate XPath expression:

XmlDocument doc = new XmlDocument();
doc.Load(path);
// Select from the root element
XmlNode node = doc.DocumentRoot.SelectSingleNode(
  "/sessions/session/parameters/propathwin32");
if (node != null)
{
  //...
}

Also, if you use a namespace to qualify your elements (or even attributes, but that's no typical), make sure you qualify them in code, too, by creating an XmlNamespaceManager using XmlDocument.NameTable as the argument to the constructor. Add your namespace and whatever prefix you want (the prefixes don't have to match - only the namespaces). To note, default namespaces (prefixes that equal "") don't work for some weird reason so you'll have to specify an actual prefix.

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Re: SelectSingleNode

Philip Fitzsimons26-Mar-04 4:07

Philip Fitzsimons

26-Mar-04 4:07

you are using the wrong property.
use InnerTextrather than InnerXml

"When the only tool you have is a hammer, a sore thumb you will have."

GINA.dll

amal_pro8325-Mar-04 23:49

amal_pro83

25-Mar-04 23:49

how to use it in c# and functions inside it?????

Colin Angus Mackay25-Mar-04 23:55

Colin Angus Mackay

25-Mar-04 23:55

You should ask in the appropriate forum. i.e. The one associated with the article:
http://www.codeproject.com/useritems/GINA_SPY.asp[^]

"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar

"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 to rightly apprehend the kind of confusion of ideas that could provoke such a question."
--Charles Babbage (1791-1871)

Colin Angus Mackay26-Mar-04 0:31

Colin Angus Mackay

26-Mar-04 0:31

Sorry, I spoke too soon. I originally googled for GINA.DLL and a CodeProject article was the first one hit.

I then googled for site:msdn.microsoft.com GINA and found this:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/security/security/winlogon_and_gina.asp[^]

Heath Stewart26-Mar-04 3:32

26-Mar-04 3:32

To consume it, you'll need to declare its native functions in C# using P/Invoke. See the DllImportAttribute documentation in the .NET Framework SDK for details, as well as the MarshalAsAttribute.

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amal_pro8326-Mar-04 6:27

amal_pro83

26-Mar-04 6:27

many thanks guys Big Grin | :-D

Key event in VS2003

thomasa25-Mar-04 23:28

thomasa

25-Mar-04 23:28

I used this code and compiled it in VS2002 and it works fine.

#region Key events
protected override void OnKeyDown(KeyEventArgs kea)
{
switch (kea.KeyData)
{
case Keys.Enter:
...
..
break;
case Keys.Escape:
this.Close();
break;
}
}
#endregion

I then compiled it in VS2003 and it woudn't enter the method when I make
a key event like Esc or any other.

Anyone knows why?

Thanks
Thomas

Re: Key event in VS2003

Heath Stewart26-Mar-04 3:30

26-Mar-04 3:30

The method is OnKeyDown. C# (and IL itself) is case-sensitive. It wouldn't have compiled, though, so I'm sure that is just lazy typing. Roll eyes | :rolleyes:

What class are you directly deriving from?

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Re: Key event in VS2003

thomasa14-Apr-04 3:30

thomasa

14-Apr-04 3:30

It's a late replay, but I've been sick... Dead | X|

No the typing where pasted in here(pritty strange)

It's deriving from System.Windows.Forms.Form

I belive it has to be something with VS2003 since it works fine with VS2002.

Thanks
Thomas

Panel AutoScroll

Krinitsky25-Mar-04 15:20

Krinitsky

25-Mar-04 15:20

Hello!
I do my programm using Window Forms with C#. I create User Control element which draw some graphics inside and has some interaction with mouse. I place my control in Panel. But size of my Control is higher then Panel size, so, I set AutoScroll of Panel as true. But I find some problem - when I first time scroll down panel and click on my control, panel automaticaly scroll up. On second click (and etc.) panel scroll bar is not jumping to the top. How I can cancel this jump after first click? I need than panel stay on selected position after any click. Can anyone help me?
Additional: I found that it happening due to MyControl.Select() action... In this case scroll is jumping up to the top. How I can overcome this problem?

Re: Panel AutoScroll

Heath Stewart26-Mar-04 3:24

Oracle Stored Procedure Returns Table

26-Mar-04 3:24

The problem has to do with focus. If you just click on your control, focus is given to the control with the first tab stop (TabStop set to 0). If you actually select a control in your UserControl, then it should scroll so that control is in view.

Also, a UserControl and all derivatives are scrollable themselves, so you don't need to put them in a Panel in order to auto-scroll. This might also help the problem of jumping to the top (which, like I said, is a focus thing and is by design) since the UserControl in control of scrolling now, not its parent Panel container.

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jm200225-Mar-04 13:00

25-Mar-04 13:00

!urgent question!!

Now I have to call an Oracle Stored Procedure, which has a set of output parameters. Some parameters type are 'TABLE OF INTEGER'.

If I have to use OleDb, what kind of OleDbType I should use for the
corresponding parameter in Parameters of the OleDbCommand?

I tried IUnknown, LongVarBinary and PropVariant. They don't work.

Or is there any alternative?

Thanks in advance!

Heath Stewart25-Mar-04 13:57

25-Mar-04 13:57

Output parameters of a table type are not supported by the System.Data.OleDb, though you could fanagle them somehow and parse the data yourself. I've seen an example of this a long time back, but it isn't a very efficient operation anyway.

Since you're using Oracle, why not use the Oracle.NET provider which is designed specifically for Oracle (just like SQL Server has had System.Data.SqlClient since .NET 1.0). The Oracle.NET provider is shipped with .NET 1.1 and is available for download somewhere on http://msdn.microsoft.com[^] for .NET 1.0 (they call it a beta, but that's only because they planned on releasing it for 1.1).

In System.Data.OracleClientOracleType I don't see any enum member for a table of data, but there is always RAW, which you can use a byte[] array with and parse out the INTs yourself.

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jm200226-Mar-04 3:37

26-Mar-04 3:37

I just installed OracleClient for .NET 1.0. Unlucky, I found those works in the help:
The PL/SQL TABLE data type is not supported by the Data Provider for Oracle. However, REF CURSORs are more efficient. If you must use a TABLE data type, use the OLE DB .Net Data Provider with MSDAORA.

It seems I should come back to use OLEDB. But was really stucked.

Heath Stewart26-Mar-04 4:34

26-Mar-04 4:34

Unlucky indeeded! At least the help gave you a place to start by telling you what OLE DB provider to use.

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jm200226-Mar-04 3:53

26-Mar-04 3:53

One more thing. Perhaps I didn't make things clear.
The problem is NOT if I can parse the data or not. I can't get the data at all.

I got this error message when I try to execute the stroed procedure:

"ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to 'GET_BREAKDOWN'
ORA-06550: line 1, column 7: Frown | :(

PL/SQL: Statement ignored"

Thanks for attention!

Heath Stewart26-Mar-04 4:45

26-Mar-04 4:45

That information would've been helpful in the first post. Smile | :)

That documentation you mentioned in the sibling post above didn't specify what OleDbType to use, did it? If you could find an OLE DB tool (there was a good one that came with VB6, but I can't remember what it was called) that gave your the actual DBTYPE_* types of parameters it gets back, you could match those up using information in the OleDbType enumeration documentation. It's apparently possible since it was mentioned in those docs you could, so matching it up to an OleDbType seems to be the only hurdle, unless of course the functionality you need is buried in the C++ OLE DB interfaces and isn't encapsulated in .NET's OLE DB classes. Here's to hope! Beer | [beer]

I took a look at the OLE DB SDK and found something you probably won't like, though: there is a DBTYPE_ARRAY defined in OLE DB that you can combine with whatever array item type you want, but it isn't exposed in .NET's OLE DB classes.

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jm200226-Mar-04 7:36

26-Mar-04 7:36

Now I changed code to like:
OleDbParameter param = new OleDbParameter(sName, new int[5]);

Now I am getting System.FormatException instead of OleDbException from ORACLE.
This is the message text:
"Index (zero based) must be greater than or equal to zero and less than the size of the argument list."

Does it provide any clue?

Heath Stewart26-Mar-04 7:44

change webservice address at runtime?

26-Mar-04 7:44

That parameter won't get you anything. Don't declare it in your arguments otherwise you won't be getting it back out (you can't reference it).

In any case, the type has to be supported by the OleDbParameter. If there's not a corresponding OleDbType, it isn't supported.

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visiontec25-Mar-04 12:35

visiontec

25-Mar-04 12:35

hi there

i made a webservice and then i added a web reference of it to my project
Now is it possible to change JUST the webservice's ADDRESS at runtime?

this.Url = "http://localhost/testing.asmx";

I want to change the address of my WS in
the reference.cs file at runtime

And if it is, then can someone plz tell me how?
some code might be nice!

VisionTec

Re: change webservice address at runtime?

Heath Stewart25-Mar-04 13:52

Re: change webservice address at runtime?

25-Mar-04 13:52

You just did it yourself with that first line of code! Smile | :)

Create an instance of your web service client proxy (which derives from WebClientProtocol) and set the Url property to whatever you need it to be.

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Mazdak25-Mar-04 19:54

Mazdak

25-Mar-04 19:54

And you can add a tag in your application setting file which indicate the url and at runtime read it.

Mazy

"Man is different from animals in that he speculates, a high risk activity." - Edward Hoagland

Dataset, Dataview, XML, RadioButtonList Question. HELP!!

bentai25-Mar-04 9:59

bentai

25-Mar-04 9:59

Hi everyone, I am fairly new to C# (2 months) and I need some serious help.

I need to populate a RadioButtonList (id=rbl) with the first set of data (QUESTIONID = 1) from a XML data (sports.xml).
I am having a hard time setting the DataTextField = "CHOICETEXT" and DataValueField = "CHOICEID".
I am not even sure if this is the best xml format either.
The code below the xml will cause an error. "System.Data.DataRowView' does not contain a property with the name CHOICETEXT"

Please help me to solve this problem. Thank you in advance.

<TEST>
<QUESTION>
<QUESTIONID> 1 </QUESTIONID>
<TYPE>radio</TYPE>
<TEXT>Who is the going to win the NCAA?</TEXT>
<CHOICES>
<CHOICE>
<CHOICEID> 1 </CHOICEID>
<CHOICETEXT>UAB</CHOICETEXT>
</CHOICE>
<CHOICE>
<CHOICEID> 2 </CHOICEID>
<CHOICETEXT>Kansas</CHOICETEXT>
</CHOICE>
</CHOICES>
<ANSWER> 1 </ANSWER>
<RESPONSE>
<CORRECT>You got that right baby!.</CORRECT>
<WRONG>ARE YOU CRAZY?</WRONG>
</RESPONSE>
</QUESTION>
<QUESTION>
<QUESTIONID> 2 </QUESTIONID>
<TYPE>radio</TYPE>
<TEXT>Who is going to win the Stanley Cup?</TEXT>
<CHOICES>
<CHOICE>
<CHOICEID> 1 </CHOICEID>
<CHOICETEXT>Red Wings</CHOICETEXT>
</CHOICE>
<CHOICE>
<CHOICEID> 3 </CHOICEID>
<CHOICETEXT>Maple Leafs</CHOICETEXT>
</CHOICE>
</CHOICES>
<ANSWER> 2 </ANSWER>
<RESPONSE>
<CORRECT>You got that right baby!.</CORRECT>
<WRONG>ARE YOU CRAZY?</WRONG>
</RESPONSE>
</QUESTION>
</TEST>

DataSet ds = new DataSet();
ds.ReadXml(MapPath("sports.xml"));
DataView dv = new DataView(ds.Tables["QUESTION"]);
dv.RowFilter = "QUESTIONID = 1";
rbl.DataSource = dv;
rbl.DataTextField = "CHOICETEXT";
rbl.DataValueField = "CHOICEID";
rbl.DataBind();

Re: Dataset, Dataview, XML, RadioButtonList Question. HELP!!

Heath Stewart25-Mar-04 14:03