HTTP Read w/ Authentication - C# Discussion Boards

MDB to Text

Jassim Rahma21-Dec-02 9:46

Jassim Rahma

21-Dec-02 9:46

How can export specific record(s) in MS Access mdb file to text comma seperated file?

Jassim

Re: MDB to Text

David Stone21-Dec-02 10:19

David Stone

21-Dec-02 10:19

I would look at pulling the stuff into a DataSet and then exporting it as XML instead of csv files. Why do you need it as a text file?

I don't know whether it's just the light but I swear the database server gives me dirty looks everytime I wander past.
-Chris Maunder

Microsoft has reinvented the wheel, this time they made it round.
-Peterchen on VS.NET

Re: MDB to Text

jassim21-Dec-02 10:26

jassim

21-Dec-02 10:26

ok but can you tell me about the following :

1. can I have a sample code please?
2. Can I protect the XML file with password so that no body will be able to view the contents?

Many Thanks,

update stausBar

Jassim Rahma21-Dec-02 9:44

Jassim Rahma

21-Dec-02 9:44

How can I update the MDI container statusBar text from the MDI child? can I have an example please...

Jassim

Extended MAPI and C#

Anonymous21-Dec-02 6:07

Anonymous

21-Dec-02 6:07

Has anyone delved into the deep dark secrets of Outlook connectors with C#?

All the references I have seen ("Inside MAPI" and MSDN) show C++ references. In particular, each connector type has a set of launch functions (the main one of which basically goes "create me a COM object and return it") and a set of COM enabled classes.

Now, I'm guessing here that I can fairly reasonably create the COM Classes using COM Interop. What is mystifying me is how do I deal with the launch functions within a C# DLL?

Any ideas?

-Adrian

Control Properties

Dave Kerr21-Dec-02 0:52

Dave Kerr

21-Dec-02 0:52

Hi,
I've written a custom windows control, that displays an OpenGL scene, but I'm having troubles with it's properties. I can programmatically modify the properties fine, adding objects etc. I can also do this at design time, using the properties window. However, any changes I make at design time don't last, as soon as I run the program, it resets to it's default properties, and then resets in the design window too.
I'm I missing something here? Do I need a special attribute to tell properties to persist, and shouldn't they persist anyway? Otherwise all these design time properties I've added are rather pointless.

Cheers,

Dave

Dave Kerr
focus_business@hotmail.com
www.focus.esmartweb.com

Re: Control Properties

Burt Harris21-Dec-02 11:28

Burt Harris

21-Dec-02 11:28

I did some work with this a while back. I remember it got tricky depending on the type of your properties.

There is a DesignerSerializationVisibilityAtttribute you can apply to change the default designer serialization behavior. If the property is a collection, you may need

[DesignerSerialzationVisibility(DesignerSerialization.Content)]

and a property get that returns the collection.

If you property values are instances of some custom type, you may need to use the DesignerSerializerAttribute.

More detail about the type of the property might be useful.

Burt Harris

HTTP Read w/ Authentication

Larry Rutledge20-Dec-02 11:27

Larry Rutledge

20-Dec-02 11:27

I used the following code to download the source of an HTML page:

<br />
  ...<br />
  try<br />
  {<br />
    // _url is a private variable which contains the URL to download<br />
    HttpWebRequest _request = (HttpWebRequest)WebRequest.Create(_url);<br />
<br />
    if (_useProxy)<br />
    {<br />
      WebProxy _proxy = new WebProxy(_proxyHost + ":" + _proxyPort.ToString());<br />
      _request.Proxy = _proxy;<br />
    }<br />
<br />
    HttpWebResponse _response = (HttpWebResponse)_request.GetResponse();<br />
<br />
    if (_response.StatusCode == HttpStatusCode.OK)<br />
    {<br />
      Stream _stream = _response.GetResponseStream();<br />
      StreamReader _streamReader = new StreamReader(_stream, Encoding.UTF8);<br />
      MessageBox.Show(_streamReader.ReadToEnd().Trim());<br />
    }<br />
  catch (WebException we)<br />
  {<br />
    // HTTP response was not "OK", handle HTTP error<br />
  }<br />
  catch (Exception e)<br />
  {<br />
    // Handle exception<br />
  }<br />
  ...<br />

My question is, what if the page I need to access requires authentication. In other words, when browsing normally, with a web browser client, a dialog pops up asking for my username and password. I have the access information, but I want the preceding code to be able to send that authentication information along and get the code without any user intervention.

Any ideas?

Re: HTTP Read w/ Authentication

leppie20-Dec-02 17:15

leppie

20-Dec-02 17:15

Passing http://user:pass@www.website.com/ should work. Smile | :)

WebBoxes - Yet another collapsable control, but it relies on a "graphics server" for dynamic pretty rounded corners, cool arrows and unlimited font support.

Re: HTTP Read w/ Authentication

Burt Harris21-Dec-02 9:53

Burt Harris

21-Dec-02 9:53

Authentication information is handled via the HttpWebRequest.Credentials property. You can set this to either an instance of NetworkCredential or CredentialCache. See the help under these two classes.

If your using Windows authentication (typically only in a corproate intranet scenario) this works to provide the credentials the current use is logged in with:

request.Credentials = System.Net.CredentialCache.DefaultCredentials;

Burt Harris

DirectX 9.0 Released

Heath Stewart20-Dec-02 9:26

Heath Stewart

20-Dec-02 9:26

DirectX 9.0 has been released on MSDN! See http://msdn.microsoft.com/library/default.asp?url=/downloads/list/directx.asp[^] for more information and downloads. It's hefty, but I'm sure it's worth if for all .NET'izens that have been waiting for managed DirectX!

"Well, I wouldn't say I've been missing it, Bob." - Peter Gibbons

Does this type of Windows Tree Control exist???

LongRange.Shooter20-Dec-02 9:08

LongRange.Shooter

20-Dec-02 9:08

I want to contruct a tree view ... but instead of vertical expansion, I want it to expand out horizontally. The intent is to present a navigation view going left to right. Has anyone seen a control like this?

Thanks

_____________________________________________
_{The world is a dangerous place.
Not because of those that do evil,
but because of those who look on and do nothing.}

Re: Does this type of Windows Tree Control exist???

Kannan Kalyanaraman20-Dec-02 18:29

Kannan Kalyanaraman

20-Dec-02 18:29

What kind of application would use this kind of control, wouldn't it give uneasy feeling to the user, because most controls only do a vertical scroll and horizontal scroll only when things could not be shown on the fullscreen.

Kannan

Re: Does this type of Windows Tree Control exist???

LongRange.Shooter23-Dec-02 2:43

LongRange.Shooter

23-Dec-02 2:43

Kannan,

I stated the application in my post: it is a Navigation view. And moving left to right is more natural than an expanding tree that moves up and down. As to scroll bars....I never said anything about scroll bars in my question.

_____________________________________________
_{The world is a dangerous place.
Not because of those that do evil,
but because of those who look on and do nothing.}

Insert a macro

mvmeijer20-Dec-02 3:35

mvmeijer

20-Dec-02 3:35

Does anyone know how I can insert a macro into Excel from C#?

I tried
fExcel.RecordMacro(macro, System.Reflection.Missing.Value);
but that seems to do nothing.

I can find no other way... or even a clue...

Help would be appreciated.
Thanks.
Michel van Meijer.

Logical Drive Information

matthias s.19-Dec-02 15:23

matthias s.

19-Dec-02 15:23

Hi,

I just can't figure out how to obtain logical drive information. What I need is the volume label, capacity, etc. I guess by now I know all System.IO classes by heart. Can somebody kick me into the right direction please.

I'm loosing hair over this one...

Matthias

In theory, there is no difference between theory and practice. In practice, however, there is.

(unknown author)

Re: Logical Drive Information

Kannan Kalyanaraman19-Dec-02 18:02

Kannan Kalyanaraman

19-Dec-02 18:02

Did you have a look around System.Management ?

Cheers,
Kannan

Re: Logical Drive Information

Jeff J19-Dec-02 20:24

Jeff J

19-Dec-02 20:24

I've looked everywhere for functions like the ones you are interested in (and many others), but I suppose some Win32 calls were never ported to the CLR. I have found Environment.GetLogicalDrives(), which is similar to GetLogicalDriveStrings() in the Win32 API. Well, maybe someone else has found others, but I just use the PInvoke/DllImport stuff. Here's some code from one of my projects:

public class Volume {

[DllImport("kernel32.dll", EntryPoint="GetVolumeInformation", CharSet=CharSet.Auto)]
public extern static int
   GetVolumeInfo(string sRootPathName,
                 StringBuilder sbVolumeNameBuffer, 
                 int nVolumeNameSize,
                 out uint uVolumeSerialNumber,
                 out uint uMaximumComponentLength,
                 out uint uFileSystemFlags,
                 StringBuilder sbFileSystemNameBuffer,
                 int nFileSystemNameSize);

[DllImport("kernel32.dll", EntryPoint="GetDriveType", CharSet=CharSet.Auto)]
public extern static uint
   GetDriveType(string sRootPathName);

[DllImport("kernel32.dll", EntryPoint="GetDiskFreeSpaceEx", CharSet=CharSet.Auto)]
public extern static int
   GetDiskFreeSpaceEx(string sAnyPath,
                      out ulong ulFreeBytesAvailable, 
                      out ulong ulTotalNumberOfBytes, 
                      out ulong ulTotalNumberOfFreeBytes);
}

//... usage somewhere else ...

uint uSerialNum, uMaxEntryLen, uFileSysFlags;
StringBuilder sbLabelBuf = new StringBuilder(260);
StringBuilder sbFileSysTypeBuf = new StringBuilder(260);

int iSuccess =
   Volume.GetVolumeInfo("C:\\", sbLabelBuf, sbLabelBuf.Capacity,
                        out uSerialNum, out uMaxEntryLen, out uFileSysFlags,
                        sbFileSysTypeBuf, sbFileSysTypeBuf.Capacity);

FWIW, I'm amazed I have any hair left at all Smile | :)

Matthias Steinbart wrote:
In theory, there is no difference between theory and practice. In practice, however, there is.

Love that one.

Cheers

Re: Logical Drive Information

Rein Hillmann19-Dec-02 21:31

Rein Hillmann

19-Dec-02 21:31

Use the Win32_LogicalDisk object found in WMI.

See this page for details:

http://www.csharphelp.com/archives2/archive334.html?printable=yes

Re: Logical Drive Information

leppie20-Dec-02 6:11

leppie

20-Dec-02 6:11

From MSDN (what more do you need?):

using System;
using System.Management; 
               
ManagementClass cls = new ManagementClass(null,"Win32_LogicalDisk",null);
cls.GetStronglyTypedClassCode(CodeLanguage.CSharp,"C:\temp\Logicaldisk.cs",String.Empty);

WebBoxes - Yet another collapsable control, but it relies on a "graphics server" for dynamic pretty rounded corners, cool arrows and unlimited font support.

Secondary Thread

kasturirawat19-Dec-02 14:25

kasturirawat

19-Dec-02 14:25

I’ve a WinForm application and a TreeView control on it. I’m creating another thread to add data to the control. So far I’m able to achieve this behavior, but sometimes secondary thread is not destroyed. I know it is not recommended, but I’d like to know more about my options and why I should not do this.

Thanks

Re: Secondary Thread

Eric Gunnerson (msft)20-Dec-02 8:19

Eric Gunnerson (msft)

20-Dec-02 8:19

You should be able to do this, but you can't do the actual update from the second thread. At least not reliably.

You'll need to use Control.Invoke() on the treeview control. Create a function that does the add on the control, create a delegate to it, and pass the delegate and the parameters to Invoke(). It will then get called on the main UI thread.

security for a service?

imran_rafique19-Dec-02 13:07

imran_rafique

19-Dec-02 13:07

i have a simple network of two computer (xp prof installed on both).i have created a user on both machine with same name and password and both are members of admin.. group.
i have created a service in c# i am running it in local system account.
but i could not access any file on the network of another computer in my service of c#?
could any body help me in this regard?

r00d0034@yahoo.com

Cursor woes.

Tom Welch19-Dec-02 4:06

Tom Welch

19-Dec-02 4:06

I have an MDI app that opens a child window and the child window performs a long database operation in the Load event. I have added the standard cursor code:

Cursor cursor = this.Cursor;<br />
this.Cursor = Cursors.WaitCursor;<br />
...<br />
this.Cursor = cursor;

However, the form does not immediately display so the cursor does not change until the operation is done... and then only briefly. So, I get smart and say:

this.Show();<br />
Application.DoEvents();<br />
Cursor cursor = this.Cursor;<br />
this.Cursor = Cursors.WaitCursor;<br />
...<br />
this.Cursor = cursor;

But this does nothing to affect the problem.

--
If it starts to make sense, you're in a cult.

Re: Cursor woes.

Rob Graham19-Dec-02 5:01

Rob Graham

19-Dec-02 5:01

Try putting the

<br />
Cursor cursor = this.Cursor;<br />
this.Cursor = Cursors.WaitCursor;<br />

just before showing the child window.
You wont want to use a local to hold a reference to the previous cursor (like above), but could use a form level public field so it could be addressed by either child or parent.

Some ideas are so stupid that only an intellectual could have thought of them - George Orwell

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.