C# Discussion Boards - CodeProject

Re: Looking for a control

reilak2-Aug-09 20:48

reilak

2-Aug-09 20:48

Thanks, that was exactly what I was looking for!

another way to work with this control? [modified]

reilak2-Aug-09 23:00

reilak

2-Aug-09 23:00

the PropertyGrid is a great control, problem is that it has only one way to work with it: the PropertyGrid can only get an instance of an object and displays properties based on the set/get functions of that object (based on what I have learned). is there another way to populate the PropertyGrid?, say by row? (to set the values of rows/columns)

modified on Monday, August 3, 2009 5:07 AM

Re: another way to work with this control?

0x3c03-Aug-09 3:04

0x3c0

3-Aug-09 3:04

I don't think it's possible to do this directly, but there's at least one article here which may help:
Unleash PropertyGrid with Dynamic Properties and Globalization[^]

Between the idea
And the reality
Between the motion
And the act
Falls the Shadow

Window Coordinates??

Muammar©1-Aug-09 23:58

Muammar©

1-Aug-09 23:58

Ok, I know it has something to do with Spy++ Or Windows Hooks or maybe both, whatever the method is, how would you track the coordinates of an open window "say, My Documents folder floating window on my desktop".

All generalizations are wrong, including this one!

(\ /)
(O.o)
(><)

Re: Window Coordinates??

dan!sh 2-Aug-09 0:10

dan!sh

2-Aug-09 0:10

Not sure, but I guess GetWindowRect method will help you out.

It's not necessary to be so stupid, either, but people manage it. - Christian Graus

Re: Window Coordinates??

Muammar©2-Aug-09 7:52

Muammar©

2-Aug-09 7:52

Thanx mate!

All generalizations are wrong, including this one!

(\ /)
(O.o)
(><)

Call method in parent aspx page from user control

Chazzysb1-Aug-09 23:04

Chazzysb

1-Aug-09 23:04

Hi, Ive just started using vs2008

im trying to call a method in a parent aspx page from a user control.

ive usually done this using something like:

((PageClass)this.Page).Method();

But for some reason PageClass never appears in intellisense...
- I cant reference the page class from the control.

Ive put the page and the control in the same namespace but still no luck.

Ive also tried using events instead - but after the event is assigned in the parent it still seems to be null in the control...

Any ideas what im doing wrong??

Thanks,
Chas

Re: Call method in parent aspx page from user control [ ASP.NET Question ]

Abhijit Jana1-Aug-09 23:42

Abhijit Jana

1-Aug-09 23:42

This is C# Forum. Your question is related to ASP.NET. So please Post it to ASP.NET Forum.

Thanks Smile | :)

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
View My Latest Article

Re: Call method in parent aspx page from user control

dan!sh 1-Aug-09 23:54

dan!sh

1-Aug-09 23:54

You can access the method this way:

((ClassNameOfASPXPage)(this.Page)).MethodName();

Make sure the method is internal/public.

It's not necessary to be so stupid, either, but people manage it. - Christian Graus

Re: Call method in parent aspx page from user control

Chazzysb2-Aug-09 0:37

Chazzysb

2-Aug-09 0:37

Hi,

Thats what ive been trying - but 'ClassNameOfASPXPage' just isnt available in the control.

- Ive put them in the same namespace, no luck - ive put them in different namespaces and added a reference in the control to the parent namespace - but the parent namespace is not available...

The funny thing is - if i create 2 aspx pages lets say 1 is public testclass1 and the other is public testclass2 - I cant reference testclass1 from testclass2 - even if they are in the same namespace. surely something is wrong here but i cant figure out what...

Thanks,
Chas

Re: Call method in parent aspx page from user control [modified]

Chazzysb2-Aug-09 2:31

Chazzysb

2-Aug-09 2:31

OK,

adding a directive like <%@ Reference Page= "~/TestPage1.aspx" %> to the control
will make the parent class available...

but a better way of doing this was to use events...

in the control:
public delegate void GridEventHandler(CategoryType categoryType);
public event GridEventHandler GridItemSelected;

private void OnGridItemSelected(CategoryType categoryType)
{
if (GridItemSelected != null)
{
GridItemSelected(categoryType);
}
}

called using:
OnGridItemSelected(selectedCT);

and in the parent page:
categoryTypeGrid.GridItemSelected += new Controls_CategoryTypeGrid.GridEventHandler(categoryTypeGrid_GridItemSelected);

modified on Sunday, August 2, 2009 9:17 AM

How do I check whether a user is in an Active Directory group when given its username and password

Andrew_1-Aug-09 21:32

Andrew_

1-Aug-09 21:32

I need to check whether a username and password are valid, and if so, if that user is in a special group on Active Directory.

I'm developing an intranet only system that (hopefully) will allow a user to login at program startup using their Active Directory credentials.

If anyone knows any C# code that does this it would be greatly appreciated. I've done a thorough Google search, but haven't found anything that returns a helpful response.

Thanks

Re: How do I check whether a user is in an Active Directory group when given its username and password

Abhijit Jana1-Aug-09 21:56

Abhijit Jana

1-Aug-09 21:56

Andrew,
Did you check this article?
Howto: (Almost) Everything In Active Directory via C#[^]

Hope This will Help You Big Grin | :-D

Abhijit Jana | Codeproject MVP
Web Site : abhijitjana.net
Don't forget to click "Good Answer" on the post(s) that helped you.
View My Latest Article

Re: How do I check whether a user is in an Active Directory group when given its username and password

Andrew_1-Aug-09 22:13

Andrew_

1-Aug-09 22:13

I've already tried the options on that site, one enabled me to check whether a user was able to logon to the active directory, but not what groups it is in, and I've been unable to get Get "Get User Group Memberships" working; it gives an unspecified error on:

public ArrayList AttributeValuesMultiString(string attributeName,
     string objectDn, ArrayList valuesCollection, bool recursive)
        {
            DirectoryEntry ent = new DirectoryEntry(objectDn);
            PropertyValueCollection ValueCollection = ent.Properties[attributeName];
            System.Collections.IEnumerator en = ValueCollection.GetEnumerator();

            while (en.MoveNext())
            {
                if (en.Current != null)
                {
                    if (!valuesCollection.Contains(en.Current.ToString()))
                    {
                        valuesCollection.Add(en.Current.ToString());
                        if (recursive)
                        {
                            AttributeValuesMultiString(attributeName, "LDAP://" +
                            en.Current.ToString(), valuesCollection, true);
                        }
                    }
                }
            }
            ent.Close();
            ent.Dispose();
            return valuesCollection;
        }

iGrid

CoderForEver1-Aug-09 20:35

CoderForEver

1-Aug-09 20:35

Hey peoples ............ if I am not late i was just to tell you that there is a nice iGrid.Net dll which is used as listViewItem ................. I got it yesterday from this site .................... on latest news on C# ................... have a look @ it and give your suggestions

Thanks a lot

how to pass Date format "mm/dd/yyyy " to Sql Stored procedure

Zapss1-Aug-09 19:37

Zapss

1-Aug-09 19:37

Dear all
am new to c#(2008).

i created a stored procedure in sql server 2000.

"select * from employee where joindate between @d1 and @d1"

I was using Table Adapter fill,get methods.

when i tried to pass the date value which in "MM/dd/yyyy"

it raises error message invalid datetime,then

i declared DateTime variable and use Datetime.Parse(date in "MM/dd/yyyy"),
DateTime.Parseexact,error not a valid datetime. i use Culture info ("en-US"),but no luck.

Re: how to pass Date format "mm/dd/yyyy " to Sql Stored procedure

Abhishek Sur1-Aug-09 21:18

Abhishek Sur

1-Aug-09 21:18

use
Convert(DateTime, '12/31/1920', 101)

to convert properlt to datetime.

Here 101 means you are passing in MM/dd/yyyy format. Check http://msdn.microsoft.com/en-us/library/aa226054(SQL.80).aspx[^] for more. Rose | [Rose]

Abhishek Sur

My Latest Articles
Working with Excel using MDAC

Basics on LINQ and Lambda Expressions

Create .NET Templates

Re: how to pass Date format "mm/dd/yyyy " to Sql Stored procedure

Mycroft Holmes2-Aug-09 12:26

Mycroft Holmes

2-Aug-09 12:26

I hope you are NOT storing your date values as varchar in the database, you would be committing a major offence doing that.

I use paramerterised queries and pass a date type into the sp. If I have to pass a string of a date to a proc I use 106 = "dd MMM yyyy" there is NO ambiguity in that format.

Never underestimate the power of human stupidity
RAH

.NET Licenser?

devvvy1-Aug-09 14:10

devvvy

1-Aug-09 14:10

hello

Skater.NET offers software licensing/lock - http://rustemsoft.com/SkaterDoc/index.html?order.htm[^]

Price quite reasonable too - but:
(a) Licenser not free so I'm lasing with Skater to see if I can download an "Evaluation Copy"
(b) We do 64 bit, apparent Skater only support 32 bit version!?
(c) Any other suggestion?

Thanks

dev

Re: .NET Licenser?

Moreno Airoldi2-Aug-09 1:02

Moreno Airoldi

2-Aug-09 1:02

I don't have a specific third party licensing solution to recommend, but see my answer to your post in the thread about obfuscation: I hope it can give you some ideas.

2+2=5 for very large amounts of 2
(always loved that one hehe!)

Pipping data to and from process

BigBenDk1-Aug-09 12:44

BigBenDk

1-Aug-09 12:44

What I need to do is something like this.

DataCruncher.exe < input.bin > output.bin
It is an application that is called in the command prompt.
The input.bin file is piped in, and the result is outputed to output.bin. Works great.

Now instead of starting the app from a command prompt, I need to call it from a C# app.

ProcessStartInfo info = new ProcessStartInfo(location);
info.Arguments = BuildArgs();
info.RedirectStandardInput = true;
info.RedirectStandardOutput = true;
info.RedirectStandardError = true;
info.UseShellExecute = false;
            
_process = Process.Start(info);
_toApp = _process.StandardInput.BaseStream;
_fromApp = _process.StandardOutput.BaseStream;

The input is in binary format, and so is the output, so I used the basestream instead of the StreamReader.

My problem is that it is blocking when im reading from the standard output.

while (true)
{
  int read = _fromApp.Read(readbuffer, 0, readbuffer.Length); // <-- blocks

  if (read == 0)
    break;

  //Do something with the data.
}

It looks like it is blocking the stream until it has all the bytes to fill the readbuffer array.

Is there something I should be aware of when read/writting to a process?

Re: Pipping data to and from process

Luc Pattyn1-Aug-09 13:18

Luc Pattyn

1-Aug-09 13:18

Hi,

the way I understand it, but this could be wrong, I don't have a reference to this, is this:
- the process input and output are designed to be used for text;
- the data is transferred from one process to the other on a line by line basis, and each full line is somehow guaranteed to become available in one go.

So it's my guess you aren't getting any data because there aren't any newline characters in your binary data.

You could experiment with binary data that happens to contain some \r or \n or \r\n sequences, to see whether that splits it in smaller parts.

If so, seems like you should either abandon binary data, or choose another way of communicating (actual files, memory mapped files, ...)

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Re: Pipping data to and from process

BigBenDk1-Aug-09 15:13

BigBenDk

1-Aug-09 15:13

Hi
Thank you for your quick response.

I did some more work on it, and it looks like it was a threading issue.

If I read the out stream in a diferent thread, it does not block. Im not sure why, but it works.

Re: Pipping data to and from process

Luc Pattyn1-Aug-09 15:25

Luc Pattyn

1-Aug-09 15:25

Yeah, I couldn't tell the threading situation from the code you have shown; if you were performing the reads from the GUI thread (say in a button click handler), then all the GUI changes you ordered in there would not become effective until that handler (i.e. all reads) have finished (unless you added some extra calls such as Invalidate or Refresh).

If you do use a separate thread, that one can't touch any Controls; you would need Control.Invoke for that. This[^] explains it.

And finally, if your data were text, not binary, you could have used the OutputDataReceived event instead of a separate thread...

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Re: Pipping data to and from process

BigBenDk1-Aug-09 16:35

BigBenDk

1-Aug-09 16:35

Yeah, I look at the OutputDataReceived event, and for a moment considered doing reverse text encoding on the string - but that was an absolute last resort Big Grin | :-D

The threading is handled internally, and has no contact to the GUI.

You can se a sample of it at:
http://bendtsen.net/sample.txt[^]

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