Re: How to use "Reflection "to compare classes? - C# Discussion Boards

TuanNH8529-Jan-07 22:23

29-Jan-07 22:23

yeah That table was not done by me so I cant control the HTML code.
SO like i asked, is there anyway I can retrieve data of a table cell?
And Christtian, I'm on Yahoo Messenger now! My ID is mrhoangtuan. If u dont mind add me so we can chat more. I have something to ask u 2.

Re: C# and table problem?

Christian Graus29-Jan-07 22:55

Christian Graus

29-Jan-07 22:55

Sorry, I don't use yahoo.

The other obvious method is string mashing, just take the text and search for the table directly. It's not pretty, but it would work

Christian Graus - C++ MVP

'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert

Re: C# and table problem?

TuanNH8529-Jan-07 23:03

TuanNH85

29-Jan-07 23:03

Sry but i'm not good at string mashing. Can u give me some sample?

Re: C# and table problem?

Christian Graus29-Jan-07 23:14

Christian Graus

29-Jan-07 23:14

Did you try removing the cast to see what that object was returning ? It's a better option.

I'd probably try pulling stuff out with regex, rather than the find methods on the string class, if I had to go that way

Christian Graus - C++ MVP

'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert

How to use "Reflection "to compare classes?

Luka Grabarevic29-Jan-07 21:28

Luka Grabarevic

29-Jan-07 21:28

hi
i'd like to compare 2 instances of the same class. i've used the XmlSerializer to save an instance
of a class into a Xml-File. after the deserialization from the file, i'd like to compare the original instance of the class and the one i've deserialized to see if the two instance are the same.
i've ask a friend and he told me that i have to use Reflection, but he didn't told me how exactlly i have to do that.

pls help

greets

pdluke

Re: How to use "Reflection "to compare classes?

Colin Angus Mackay29-Jan-07 21:41

Colin Angus Mackay

29-Jan-07 21:41

pdluke wrote:
i'd like to compare the original instance of the class and the one i've deserialized to see if the two instance are the same.

Be careful. The two objects will not be the same. What you mean is that you are testing to see if they are equal.

You can do this without reflection. You can override the Equals method:

public override bool Equals(object obj)
{
    bool isEqual = base.Equals(obj);
    if (!isEqual)
        return false;
 
    // Do more stuff to determine equality - updating isEqual
 
    return isEqual;
}

Only you can determine what constitutes equality.

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Re: How to use "Reflection "to compare classes?

Russell Jones29-Jan-07 22:33

Russell Jones

29-Jan-07 22:33

if you have unit tests for your object you could use them instead of the equals method. It depends whether you are interested in them being functionally identical or having the same state or both.

Russell

Re: How to use "Reflection "to compare classes?

Dan Neely30-Jan-07 2:50

Dan Neely

30-Jan-07 2:50

Use this.GetType().GetProperties() to get an array of the properties, then us the GetValue method of each to get the value of the property for this and obj2 to compare the values. If you're not exposing all your data as properties, use GetMembers instead.

--
Rules of thumb should not be taken for the whole hand.

ZedGraph: DateTime Axis-scale problem and language settings

Rene Tanner29-Jan-07 21:00

Rene Tanner

29-Jan-07 21:00

Hi I'm using ZedGraph Version 4.5.1.24865

I've two problems(questions):

I've a problem with the Xaxis scale, my Xaxis has following configuration:

Xaxis.Type = AxisType.Date;
Xaxis.Scale.MajorUnit = DateUnit.Second;
Xaxis.Scale.MajorStep = 0.2F;
Xaxis.Scale.MinorUnit = DateUnit.Second;
Xaxis.Scale.MinorStep = 0.001F;
Xaxis.Scale.Format = "mm:ss:fff";

When I zoom into the graphpane and the label with the value 25:00:00 is outside the visible area, then the next labels(example: 25:01:525; 25:02:455) aren't shown, but values like 26:00:00, 26:01:438, 26:13:389 are shown until the label 26:00:00 is outside the visible area.

This is what i get:
Xaxis__________________________________________________________
Labels 26:00:00 26:01:438

This is what i want:
Xaxis _________________________________________________________
Labels 25:01.525 25:02:455 … 26:00:000 26:01:438

What am I doing wrong, how can I fix this problem?

Is it possible to set the language default to english? Because when i use the german contextmenu the menuitem "Punktwerte anzeigen" appears twice (once for the function "point values" and once for "undo zoom step" .

Thanks

Best regards

how to use time delay?

Petra29-Jan-07 20:08

Petra

29-Jan-07 20:08

hi all, i wish to use a delay of time = 1msec. is there a function can help me?

thank u.

Re: how to use time delay?

TuanNH8529-Jan-07 20:23

TuanNH85

29-Jan-07 20:23

delay of time = 1msec? nvm

u can use timer:

public System.Timers.Timer aTimer = new System.Timers.Timer();

aTimer.Interval = 1;
aTimer.Enabled = true;
aTimer.Elapsed += new ElapsedEventHandler(OnTime);

public void OnTime(object source, ElapsedEventArgs e)
{
//... do something
}

Re: how to use time delay?

blackjack215029-Jan-07 20:23

blackjack2150

29-Jan-07 20:23

System.Threading.Thread.Sleep(1);

Re: how to use time delay?

Christian Graus29-Jan-07 21:56

Christian Graus

29-Jan-07 21:56

There is no way you can count on a 1 msec delay, it's just not going to happen. That's the lowest value you can set on a timer, it's always going to be more than that.

Christian Graus - C++ MVP

'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert

Re: how to use time delay?

Luc Pattyn30-Jan-07 2:18

Luc Pattyn

30-Jan-07 2:18

As Christian said, the delay you get from a timer will exceed 1 msec, no matter what you ask
for. (If you ask for small values, you probably will get around 10 to 16 msec). This holds
true for Form.Timer, Threading.Timer and Timers.Timer

There are ways to obtain shorter delays, e.g. by using a multimedia timer.

I have just finished an article on this, I expect it to appear in the coming days.
Title will be "Timer surprises...".

Smile | :)

Luc Pattyn

HTMLElement Object Problem

TuanNH8529-Jan-07 19:53

TuanNH85

29-Jan-07 19:53

Using C# in VS.NET 2003, I included the system.windows.forms namespace but i can't find the HTMLElement. It should be available. How come?
Any suggestion pls?

Re: HTMLElement Object Problem

andre_swnpl29-Jan-07 20:19

andre_swnpl

29-Jan-07 20:19

I think this class is only available in Dot Net 2.0 (VS 2005).

OMG?

TuanNH8529-Jan-07 20:37

TuanNH85

29-Jan-07 20:37

That means i have to buy a new version Frown | :(

If so then this is terrible Cry | :((

. Is there something else i can do?

Re: OMG?

andre_swnpl29-Jan-07 20:51

andre_swnpl

29-Jan-07 20:51

You could try to use the XmlDocument / XmlElement objects - but that gave me a lot of trouble.

Or you could just use the Express version

Re: OMG?

bobsugar22229-Jan-07 21:34

bobsugar222

29-Jan-07 21:34

or SharpDevelop[^]

looping windows forms datagrid in c#

Sivaprasad C29-Jan-07 19:36

Sivaprasad C

29-Jan-07 19:36

Hi Can anybody help me with the code how to loop a windows forms datagrid using c#

Regards,
Sivaprasad

returning more than single value from a single function

sukaan29-Jan-07 19:01

sukaan

29-Jan-07 19:01

hi friends,

do any one of you have any idea about returning more than a single value from a function.
if so, do favour me by sending some sample codes as early as possible

Big Grin | :-D

Thanks

Suresh.C

Re: returning more than single value from a single function

Sylvester george29-Jan-07 20:05

Sylvester george

29-Jan-07 20:05

Use collection object

Regards,
Sylvester G
Senior Software Engineer
Xoriant Solutions

Re: returning more than single value from a single function

andre_swnpl29-Jan-07 20:05

andre_swnpl

29-Jan-07 20:05

You could use output parameters.

eg

private bool SomeFunction(string inParameter, out string outParm)
{
outParm = "someValue";
return true;
}

Re: returning more than single value from a single function

blackjack215029-Jan-07 20:20

blackjack2150

29-Jan-07 20:20

You could also create a struct which encapsulates all the the members you would like to return. The function would return an object of the structure type.

Re: returning more than single value from a single function

aSarafian30-Jan-07 0:36

aSarafian

30-Jan-07 0:36

I always prefer this approach when output is not also an input.

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