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Where does the first link lead you?[^]
Cheers,
Vikram.
"When I read in books about a "base class", I figured this was the class that was at the bottom of the inheritence tree. It's the "base", right? Like the base of a pyramid." - Marc Clifton.
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I really like your "Where does the first link lead you?" response much more than my boring old "Google is your friend" response... Can I use it?
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I didn't know I'd started a fad  I would prefer you, as a token of appreciation for the idea, giving me half your salary and your firstborn. 
Of course, use it by all means! 
Cheers,
Vikram.
"When I read in books about a "base class", I figured this was the class that was at the bottom of the inheritence tree. It's the "base", right? Like the base of a pyramid." - Marc Clifton.
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Hi all,
I have a Page which contains 3 User Controls. (Navigation, Main Content, and Cart Preview)
How can I access a Page variable from these User Controls? Bearing in mind that multiple pages will need to include these User Controls.
For exmaple: I need them to all have access to a querystring.
Thanks,
Pete
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Hi...
i want my GUI to look Kazaa-like...
i got my mainform , with Main Menu... and i got 4 or 5 forms..
i want the user to select a command from the main menu and then the requested form will be displayed at the same window as the mainmenu.! (Maybe some sort of container?)
currently , if the users selects one of the commands, a new window (not showed in the taskbar) is opened with the requested form.. but it's still 2 forms ( 1 mainmenu and 1 requested form) opened at the same time , and in the requested form , No Menu...
i hope that my explanation is good enough...
...Yosi..
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have you tried using panels?
do you need separate forms? if not use panels.
try to set all your panels the same demenisons, then build them one on top the other. build your menu(main) to toggle between panel1.visible=true; or =false per each menuItem selection.
string Beautiful;
Beautiful = "ignorant";
label1.Text = "The world is full of " + Beautiful +" people.";
Why is common sense such an un-common comodity?
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A function adds values in different combinations and returns the sum. Below is a list of values it uses. How do i extract the values that were added together? Example, say the function returns 10. Mentally i can extract the values 8 and 2, and figure out that 10 represents a "16bit" "WAV". How do i do the same in code?
int WAV = 8;
int 24bit = 4;
int 16bit = 2;
int 8bit = 1;
The above value list is hypothetical. The real numbers i am working with are like the ones below. They come from an open source project called libsndfile.
SF_FORMAT_WAV = 0x010000, // Microsoft WAV format (little endian):
SF_FORMAT_PCM_S8 = 0x0001, // Signed 8 bit data
SF_FORMAT_PCM_16 = 0x0002, // Signed 16 bit data
SF_FORMAT_PCM_24 = 0x0003, // Signed 24 bit data
SF_FORMAT_PCM_32 = 0x0004, // Signed 32 bit data
Happy Holidays
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You can perform logical operators to the number you have. For example:
int Wav16bit = 10;
if ((Wav16bit & SF_FORMAT_WAV) != 0)
{
}
if ((Wav16bit & SF_FORMAT_PCM_16) != 0)
{
}
NOTE: There is only one ampersand.
What it does is look at the bits in the number and perform a logical and operation. So only where positions where the bits match will it be true
0001 & 0001 = 0001 // Both numbers match
0010 & 0001 = 0000 // Not matching bits
0100 & 0101 = 0100 // Only the second bit matches
There is another useful, similar, operator - the logical or operator and it is represented by a vertical bar | It says that if any bits are on on either side then that bit will be on in the result:
0001 | 0001 = 0001
0010 | 0001 = 0011
0100 | 0011 = 0111
Does this help?
My: Blog | Photos
"Man who stand on hill with mouth open will wait long time for roast duck to drop in." -- Confucius
-- modified at 5:03 Wednesday 21st December, 2005
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In your last example you talked about | and used &
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 All fixed up now, thanks. 
My: Blog | Photos
"Man who stand on hill with mouth open will wait long time for roast duck to drop in." -- Confucius
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I think i got it now. I did not put this in my post, but i learned there are "mask" constants used to filter out values.
SF_FORMAT_TYPEMASK = 0x0FFF0000,
SF_FORMAT_SUBMASK = 0x0000FFFF,
By &-ing these with the format number i can get the main format type (WAV, AIFF, AU, etc) or the format subtype (16-bit, 24-bit, etc). From my experimenting |-ing seems to do the opposite of &-ing. It is kind of like adding and subtracting. I am sure as i code more on a low level i will get a better understanding.
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I need this kind of classes:
struct_db mystruct = new struct_db();
public struct str1{
public string nome;
public string lunghezza;
public string tipo;
}
public class tab{
public string nometab;
public str1[] fields;
public string[] index;
public string[] procedure;
}
public class struct_db{
public int count;
public tab[] tabs;
public struct_db(){
tabs = new tab[100];
}
}
if set a value at struct_db.tabs[i].index i have an error because this array is not initialized... how i can initialize the class tab before using?
Thanx
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peppepinna wrote: tabs = new tab[100];
This just reseves the space for the array - but does not initialise it. You need to do something like this on each element:
tabs[i] = new tab();
Does this help?
My: Blog | Photos
"Man who stand on hill with mouth open will wait long time for roast duck to drop in." -- Confucius
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Yes i have to initialize for each elements of tabs[i] the struct tab that is not initialised, ad if i give a value at the elements of tab i have an error because this value is a "null reference", with the struct_db = new ... i reserve space for struct db and reserve the space for tabs, but i cannot reserve the space for the elements of tabs. I have try to put "tabs[i] = new tab()" into initialization of struct_db but it doesen't work.
Thanx
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Many thanx you have give me an idea, i have solved my problem, i do a new tab() for each element into the struct_db(){...} and into my tab classes i initialize my arrays.
Many many thanx bye.
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Excellent - glad you got it working.
My: Blog | Photos
"Man who stand on hill with mouth open will wait long time for roast duck to drop in." -- Confucius
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Sorry, I missed what you were getting at.
tab.index = new string[length];
for(int i=0; i<length; i++)
{
tab.index[i] = "";
}
Your class does not have a constructor (so C# will create a default one for you) perhaps you should consider creating one in order to initialise the fields properly.
Also, you may want to consider making your fields private or protected and exposing them through properties. See this article[^] for some good reasons to use properties.
My: Blog | Photos
"Man who stand on hill with mouth open will wait long time for roast duck to drop in." -- Confucius
-- modified at 5:12 Wednesday 21st December, 2005
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I have solved in this way:
struct_db mystruct = new struct_db();
public struct str1{
public string nome;
public string lunghezza;
public string tipo;
}
public class tab{
public string nometab;
public str1[] fields;
public string[] index;
public string[] procedure;
public tab(){
fields = new str1[100];
index = new string[100];
procedure = new string[100];
}
}
public class struct_db{
public int count;
public tab[] tabs;
public struct_db(){
tabs = new tab[100];
for (int i = 0;i < 100;i++)
tabs[i] = new tab();
}
now work properly...
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Hi,
I'm quite new to C# and I have been fiddling around with a little problem for some time now.
I have a form with a PrintPreviewControl on it. I also have a RichTextBox on the same form. Now, I want to update the PrintPreviewControl contents whenever I type something in the RichTextBox. As far as I can see, the PrintPreview is only updated when it is created (it seems the creation of the PrintPreviewControl fires the PrintPage event with the previewers graphics context). My question is, how can I update the PrintPreviewControl on demand?
Thank!
Regards,
Lars
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Hi frend!
1 begginer saying to another:
this.TextBox1.TextChanged
then put ur PrintPreviewControl code inside this:
TextBox1_TextChanged
just a though...then again I could be wrong
Aim small, miss small...
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tatchung,
My problem is not how to handle events, but how to access the PrintPreviewControls graphics context on demand. The graphics context is part of the PrintPageEventArgs which is automatically passed to the PrintPage event handler upon creation of the PrintPreviewControl.
Regards,
Lars
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Hi,
i have to create a graphics application in c3 which should draw lines when an user-defined event is triggered...
Plz help me in creating this application in codes.........
Thanx
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You can use the Graphics.DrawLine function.The function takes System.Drawing.pen object to determine color and width and the coordinates as parmaters.
Hope this help.
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thanx bassam...
I have found it right....
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Dear All,
I am calling AcceptChanges in DataTable after adding some rows to the datatable, but that is not affecting the row status.
Please let me know what are the conditions, when the Acceptchange will not take affect.
thanks in advance
Contact him at: hasansheik@hotmail.com
hasansheik@yahoo.co.in
hasansheik@lycos.com
Contact him at: hasansheik@hotmail.com
hasansheik@yahoo.co.in
hasansheik@lycos.com
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