Casting String to Long - C# Discussion Boards

Re: enum and inheritance

hatim_ali5-Jul-04 2:12

hatim_ali

5-Jul-04 2:12

Try base.Something

Hope it helps

Re: enum and inheritance

Anonymous5-Jul-04 3:50

Anonymous

5-Jul-04 3:50

Thank you but I would like to expose the enumeration to the client of the class. Maybe it is more a problem of scope.
For instance, to expose a private member of the base class, I would create a public property but I don't know how to do it for an enumeration.

Re: enum and inheritance

Heath Stewart5-Jul-04 5:40

Heath Stewart

5-Jul-04 5:40

public class A
{
  protected SomeEnum e;
}
public class B : A
{
  public SomeEnum E
  {
    get { return base.e; } // this.e or just e will also work
    set { base.e = value; }
  }
}

You can't access private fields - not even in derivative classes. That's why they're declared as private.

Exposing an enumeration is like exposing any other type, be that a reference type or value type (which an enum is, along with primatives and structs).

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Re: enum and inheritance

leppie5-Jul-04 7:16

leppie

5-Jul-04 7:16

Parameter.Something Smile | :)

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Re: enum and inheritance

Anonymous5-Jul-04 22:58

Anonymous

5-Jul-04 22:58

Well, all is ok...
I am sorry but I missed that in fact my class was not inherited from the class which defined the enumeration but from an inner class of it Blush | :O

. It was more a problem of scope than of code...

Thank you for your replies,
Best regards

Get Url from IE

olreit4-Jul-04 22:57

olreit

4-Jul-04 22:57

Hello,

how can I get the URL from an open Internet Explorer? I tried it on this way:

InternetExplorerClass IE = new InternetExplorerClass();
txtGetURL.Text = IE.LocationURL;

But this returns allways an empty string

Re: Get Url from IE

eggie56-Jul-04 13:24

eggie5

6-Jul-04 13:24

Your going to need to use SPY++ to get the handle of the IE's addressbar (which is a combobox). Then you will use the User32.dll SendMessage and WM_GETTEXT, which is documented here PINVOKE.net[^]

/\ |_ E X E GG

Casting String to Long

hatim_ali4-Jul-04 22:52

hatim_ali

4-Jul-04 22:52

Hi Friends,

I need to cast a string to long. I'm reading information from an XML file. The file contains information such as record's ID, Age. These are declared as C# type long. I'm using System.XML.XMLDocument class for reading XML File. All the values returned by XMLDocument object are in string format. so i get ID ang Age as strings not Long. Now i need to cast them as long so i can utilized them safely in my program... I've searched MSDN and it says type casting across differnt domain is not allowed.

Is there any workaround to cope up with this situation ???

Thanks in advance,

Regards,
Hatim Ali.

Re: Casting String to Long

Stefan Troschuetz4-Jul-04 23:05

Stefan Troschuetz

4-Jul-04 23:05

Use an overload of Int64.Parse to convert your string.

Re: Casting String to Long

hatim_ali4-Jul-04 23:24

hatim_ali

4-Jul-04 23:24

Thanks Stefan

Time Validation

dabuskol4-Jul-04 22:36

dabuskol

4-Jul-04 22:36

Hi Guys,

How to validate a TIME?
- After selecting the data from the database SQL SERVER I need to validate the time. IF it's > 12:00 am then I will not accept that particular record no specific dates.

ex0. 2004/06/20 12:01:43 AM - this is not allowed
ex1. 2004/06/20 12:00:01 AM - this is not allowed

if I used this sql statement using the ex0 or ex1 value it gives me a "0" value
select datepart(hh,requestdate) from dtrequest where requestno='DRAFT104' group by requestdate

Anybody who can direct me to a page where I can read and give me idea or solution, or if you can help me.

Thanks
/Dabuskol

Re: Time Validation

Colin Angus Mackay5-Jul-04 1:22

Colin Angus Mackay

5-Jul-04 1:22

dabuskol wrote:
IF it's > 12:00 am then I will not accept that particular record no specific dates

Then what records are you accepting? 12AM == Midnight, 12PM == Noon

So, the result you are getting from the datepart is correct. Zero-hundred-hours == Midnight.

When dealing with dates and times I always use the 24-hour clock - it is much easier to work with.

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Can't manage to P/Invoke that Win32 API in .NET? Why not do interop the wiki way!

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Re: Time Validation

dabuskol5-Jul-04 1:56

dabuskol

5-Jul-04 1:56

12 PM..

Re: Time Validation

Colin Angus Mackay5-Jul-04 2:15

Colin Angus Mackay

5-Jul-04 2:15

dabuskol wrote:
12 PM..

Confused | :confused:

how can i take lively image from a webcam?

turgaytr4-Jul-04 21:21

turgaytr

4-Jul-04 21:21

hello there,
i want to take lively images from a webcam which connects to my PC from USB.
if you help me i will be very very happy.
have nice work.....
turgaytr@hotmail.com

T.A

Re: how can i take lively image from a webcam?

Ivan Lee (CN)4-Jul-04 22:47

Ivan Lee (CN)

4-Jul-04 22:47

you'd better have the driver and SDK of the webcam.

then you can do it better.

Re: how can i take lively image from a webcam?

leppie5-Jul-04 7:20

leppie

5-Jul-04 7:20

...and livelier Smile | :)

^{top secret xacc-ide 0.0.1}

control box

sreejith ss nair4-Jul-04 17:26

sreejith ss nair

4-Jul-04 17:26

:-Ohai there,

i have a form with controlbox in my application. If the user click on close button. then I want to show a message box(MessageBoxbuttons.YesNocancel). i wrote different operation to handle all this three choices. but the funny thing is no matter if i click yes or No or Cancel this will dispose the form.

i want to dispose the form if the user select Yes.
Other wise i need to keep the form active( If user choose cancel or no).

any idea

Please feel free to contact.

Sreejith S S Nair - Bangalore

Re: control box

Nick Parker4-Jul-04 17:41

Nick Parker

4-Jul-04 17:41

sreejith ss nair wrote:
any idea

Yep, you need to override the OnClosing event and capture the DialogResult from your user. Based upon the users response, change the Cancel property of the CancelEventArgs and pass it to OnClosing of the base class. Here is a quick example:

protected override void OnClosing(CancelEventArgs e)
{
    DialogResult r;
    r = MessageBox.Show("Do you want to quit?", "Quiting",
        MessageBoxButtons.YesNo, MessageBoxIcon.Information);
    if(r == DialogResult.No)
        e.Cancel = true;
    base.OnClosing (e);
}

- Nick Parker
My Blog | My Articles

Re: control box

sreejith ss nair4-Jul-04 18:25

sreejith ss nair

4-Jul-04 18:25

nice shoot dear Blush | :O

Please feel free to contact.

Sreejith S S Nair - Bangalore

How can I get the size of the string in pixel ??

MarkSender4-Jul-04 16:56

MarkSender

4-Jul-04 16:56

I want to draw many strings in graphics, but I don't know how to get the size of the string in pixel (not the Length) to control them..
( As the function CSIZE GetTextExtent(CString) in Visual C++ )
Can you help me?

Cuoc doi ai biet dau ngay mai... Smile | :)

Re: How can I get the size of the string in pixel ??

Nick Parker4-Jul-04 17:24

Nick Parker

4-Jul-04 17:24

Minh Tong Tong wrote:
Can you help me?

Sure, if you read the MeasureString[^] method of the Graphics class, it returns a SizeF structure which gives you both the Height and Width of the string measured in pixels.

- Nick Parker
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clearing console screen

insurgentpyro4-Jul-04 16:42

insurgentpyro

4-Jul-04 16:42

does anyone have any straightforward method of clearing the console screen with an explanation?

i know it can be done...

Re: clearing console screen

Nick Parker4-Jul-04 17:28

Nick Parker

4-Jul-04 17:28

insurgentpyro wrote:
i know it can be done...

Yes, it can. Why don't you read the article Microsoft has published in it's knowledgebase:

HOW TO: Clear the Console Window with Visual C# .NET[^]

If you have questions that aren't clear to you within their article, feel free to post them here.

- Nick Parker
My Blog | My Articles

Re: clearing console screen

insurgentpyro4-Jul-04 17:44

insurgentpyro

4-Jul-04 17:44

thank you. i read it and implemented it. however, everytime i try to compile, it gives me an error

"needs an object reference for the nonstatic method 'nsClearConsole.ClearConsole.Clear()'"

so i created an object:

nsClearConsole.ClearConsole cls = new nsClearConsole.ClearConsole();

then i used it:

cls.Clear();

but when i compile, it says something about cls not being a namespace or class (did you miss a using or assembly reference?) or something like that...

any help?

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