C# Discussion Boards - CodeProject

Nagy Vilmos21-Jul-09 2:13

21-Jul-09 2:13

have you tried making the data bindable and then the form's label simply binds to the instance value. When the datNext changes the label is updated for free.

Panic, Chaos, Destruction.
My work here is done.

Check Box control in datagrid

spankyleo12321-Jul-09 1:33

spankyleo123

21-Jul-09 1:33

Hi,

I am trying to implement a functionality which will allow users to select rows by checking into the check boxes in the datagrid view and displaying the checked item in a new form. Can any1 help me out in this.

Many Thanks,

Re: Check Box control in datagrid

Rutvik Dave21-Jul-09 3:37

Rutvik Dave

21-Jul-09 3:37

try this one...[^]

Multi Forms Application

vhassan21-Jul-09 1:15

vhassan

21-Jul-09 1:15

Hi everyone.

I want to make an application that has one Main Window Form.
From this main form I want to open new forms. Each newly opened form is showed in Taskbar and can be individually closed. But I want main window form to be Owner of all newly opened form.

In the above case I want single instance of Main Form running as an application and if i close the main form all other opened forms should be closed.

I cannot used this.AddOwnedForms(newForm) because there are few restrictions of minimize and focusing main form.

What is best way to achieve this functionality?

Thanks.
Good Day.

Re: Multi Forms Application

musefan21-Jul-09 3:19

musefan

21-Jul-09 3:19

Just create and show all your 'child forms' inside your main form and you should automatically get all the functionality you have asked for

Life goes very fast. Tomorrow, today is already yesterday.

Re: Multi Forms Application

vhassan21-Jul-09 17:41

vhassan

21-Jul-09 17:41

Thank you for reply.

I want Main Form as a separate window. Not like MDI container. Is that possible to have Main Form invoking new windows and works as parent to all new windows?

Get current file path hosted by an Excel process

Muneeb Abdul Shakoor21-Jul-09 1:12

Muneeb Abdul Shakoor

21-Jul-09 1:12

Hi!
I want to get the file path hosted by a certain excel process. I have its Process object only.
Thanks in advance.

Line Numbers display....

spalanivel21-Jul-09 0:34

spalanivel

21-Jul-09 0:34

Hi,
How to skip the single line from the graph while plotting the number.
consider the numbers from 0 to 9 it will be as;( in the For Loop)
Working format:

|||||||||| ---> Graph lines
0123456789 ----> X axis numbers

I need to have the format like;

||||||||||||||||||| ---> Graph lines
0 1 2 3 4 5 6 7 8 9 ----> X axis numbers..

Thanks,
Subbu

Re: Line Numbers display....

Nagy Vilmos21-Jul-09 0:46

Nagy Vilmos

21-Jul-09 0:46

0. It is considered rather bad maners to have multiple unanswered questions.
1. Have you considered using a graph library, zGraph is very good.
2. Format your code, this is a pile of pants:
|||||||||||||||||||
0 1 2 3 4 5 6 7 8 9

But this is purdy:

||||||||||||||||||| 
0 1 2 3 4 5 6 7 8 9

[Highlight the code block and click 'code block'

Panic, Chaos, Destruction.
My work here is done.

C# MDI Application

sateesh villa20-Jul-09 23:40

sateesh villa

20-Jul-09 23:40

Hi,

I am new to C#.I have to develop an MDI apps in C#.
Can anyone give me a sample C# MDI Application, If you have any?

Regards,
Sateesh.

Re: C# MDI Application

Manas Bhardwaj20-Jul-09 23:45

Manas Bhardwaj

20-Jul-09 23:45

sateesh villa wrote:
Can anyone give me a sample C# MDI Application, If you have any?

Here [^]is one article on MDI Apps in CP.

Manas Bhardwaj
Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.

Re: C# MDI Application

sateesh villa21-Jul-09 0:34

sateesh villa

21-Jul-09 0:34

Thank you..
I read it.
Can I get any sample projects anywhere in web?

Re: C# MDI Application

vhassan21-Jul-09 1:00

vhassan

21-Jul-09 1:00

Look into msdn sample applications for C#

Get the input values at the time of scrolling...

spalanivel20-Jul-09 23:37

spalanivel

20-Jul-09 23:37

Hi,

I need to plot the wave format on the usercontrol screen with the use of text file(having input values about 2gig). Horizontal Scrollbar is placed on the panel and if I move the scroll bar the panel should move for certain amount values.

Is it optimal to use the lazy loading technique here.How? Is there any other way to accomplish this task?

Consider the screen width is 300 and wave columnwidth of wave is 30 and the total numbers to plot wave is 3000.

Then 300/30 = 10 waves can be drawn.

How to set the Largechange and Smallchage in the Horizontal Scroll event?

Thanks,
Vel

Re: Get the input values at the time of scrolling...

Nagy Vilmos21-Jul-09 0:41

Nagy Vilmos

21-Jul-09 0:41

I would suggest seperating out your problem.
0. File reading
What is the format of the file?
If it is a fixed length format, can you can read directly any portion of it?

1. Display scroll bar:
Set the scroll bars range to be 0-2990 - the max value is {number of items} - {items to be displayed}
Set the small change to 1, you are moving by a single frame.
Set the large change to 10, you are moving the entire page width.

Panic, Chaos, Destruction.
My work here is done.

Re: Get the input values at the time of scrolling...

spalanivel21-Jul-09 1:30

spalanivel

21-Jul-09 1:30

Thanks Vilmos...

Text File format and it's not fixed length I read from text file and have the values in an ArrayList and I loop through it.

How to set the scroll bar range? Any property need to change?

Getting the 10 values from above arraylist and planning to plot the value as a wave during Horizontal_Scroll() function when scroll left and right? How to achive this?

Regards,
Subbu

Re: Get the input values at the time of scrolling...

Luc Pattyn21-Jul-09 1:55

Luc Pattyn

21-Jul-09 1:55

Hi,

I would like to suggest you read this[^] carefully.

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: Get the input values at the time of scrolling...

Nagy Vilmos21-Jul-09 2:03

Nagy Vilmos

21-Jul-09 2:03

spalanivel wrote:
have the values in an ArrayList

This does produce an overhead in that you need to read everything in upfront, but it's not the end of the world.

spalanivel wrote:
How to set the scroll bar range? Any property need to change?

Once you've read the file, you'll have the number of items in your list:

hScrollBar1.Maximum = this.listOfValues.Count - 10;

spalanivel wrote:
Getting the 10 values from above arraylist and planning to plot the value as a wave during Horizontal_Scroll() function when scroll left and right? How to achive this?

for (int x = hScrollBar1.Value;
     x < hScrollBar1.Value + 10;
     x++) {
    // do some majic
}

Panic, Chaos, Destruction.
My work here is done.

Re: Get the input values at the time of scrolling...

spalanivel21-Jul-09 21:22

spalanivel

21-Jul-09 21:22

Thanks Vilmos,
Still I need to clarify some doubts and i will send you the source code fully so that you can give the optimal solution. will you please give your email id?

Regards,
Subbu

Re: Get the input values at the time of scrolling...

Nagy Vilmos21-Jul-09 23:36

Nagy Vilmos

21-Jul-09 23:36

I don't want to see your code, I have enough to deal with my own. Go figure out what you can and should you have any more questions then you are free to come back and ask. Someone is sure to answer if you ask well.

Panic, Chaos, Destruction.
My work here is done.

Re: Get the input values at the time of scrolling...

spalanivel22-Jul-09 1:00

spalanivel

22-Jul-09 1:00

Yes I will do it. Thanx

How do you find value of bits in byte

gwithey20-Jul-09 23:34

gwithey

20-Jul-09 23:34

I have looked in all my books and on the net and cant find a way to do this, it just tells me about shifting bits which will not be appropriate.

I have a program that recieves a byte[] from an external source.
The array elements represent different things eg(byte[0] bit 1 (rightmost)) = buzzer state (1 on: 0 off)

In the command i recieve there will be 3 bytes, with each contained bit representing a buzzer or LED and its state on or off;

Does anyone know how i can look through the bits and check there state?

Thanx George

Re: How do you find value of bits in byte

Mirko198020-Jul-09 23:43

Mirko1980

20-Jul-09 23:43

You can use the BitArray class to check the value of single bits into a byte array.

Re: How do you find value of bits in byte

gwithey21-Jul-09 0:30

gwithey

21-Jul-09 0:30

Thanx for the advice this looks like a useful class.

I tried looking through the byte with .length but noticed there was a get() position which is what i was looking for. As somthing like getchar()/ charAt() is perfect.

Re: How do you find value of bits in byte

gwithey21-Jul-09 0:44

gwithey

21-Jul-09 0:44

I think this is the idea

BitArray byte1 = new BitArray(commandData.Data[0]);
                 enumLEDAndBuzzer lcdAndBuzzState = enumLEDAndBuzzer.NULL;

                 if ((byte1.Get(byte1.Count - 1)) == 0x31) // 1
                 {
                    lcdAndBuzzState = enumLEDAndBuzzer.BUZZER_STATE;
                 }
                 else
                 {
                    lcdAndBuzzState = enumLEDAndBuzzer.NULL;
                 }
                  if((byte1.Get(byte1.Count - 2)) == 0x31) // 1
                 {
                 }
                 else
                 {
                    lcdAndBuzzState = enumLEDAndBuzzer.NULL;
                 }

From my understanding i should be able to work from right to left by (count - 1++).
Thanx again

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