How to read byt buffer to 4 byt as a offset - C# Discussion Boards

Re: Repeat how to read offset

Nader Elshehabi16-Sep-06 1:19

Nader Elshehabi

16-Sep-06 1:19

Do not repost your question. Mad | :mad:

You should have replied to my post in the previous thread!!
Are the values of your bytes stored in decimal or hexadecimal?

Repeat how to read offset

Parshant Verma16-Sep-06 1:26

Parshant Verma

16-Sep-06 1:26

values are in hex

Re: Repeat how to read offset

Nader Elshehabi16-Sep-06 1:32

Nader Elshehabi

16-Sep-06 1:32

If your values or store in hex Right to left order Like this:
Byte3-byte2-byte1-Byte0, and each byte represents a hex value from 1-15
So your read byte0,
Then byte1 and multiply it by 16
Then byte2 and multiply it by 256
Then byte3 and multiply it by 4096

It's a simple Hex-dec conversion, and I hope I got you right..

Regards

Re: Repeat how to read offset

Parshant Verma16-Sep-06 2:32

Parshant Verma

16-Sep-06 2:32

Hi My byte array store hex values
take an e.g
00 ea d4 00 This is four byte .how can i read then in as it is in a variable so that myvariable=d4ea

in vc++ there is memcpy function there should be?

Re: Repeat how to read offset

Guffa16-Sep-06 1:40

Guffa

16-Sep-06 1:40

I believe that you have not stored hexadecimal digits (0-15) in the bytes in the array, but byte values (0-255)? Am I correct?

Shift the values and add them together:

uint b1 = theByteArray[somewhere];<br />
uint b2 = theByteArray[somewhere + 1] << 8;<br />
uint b3 = theByteArray[somewhere + 2] << 16;<br />
uint b4 = theByteArray[somewhere + 3] << 24;<br />
<br />
uint offset = b1 + b2 + b3 + b4;

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how to read offset

Parshant Verma16-Sep-06 2:13

Parshant Verma

16-Sep-06 2:13

Hi My byte array store hex values
take an e.g
00 ea d4 00 This is four byte .how can i read then in as it is in a variable so that myvariable=ead4

Re: how to read offset

Guffa16-Sep-06 20:41

Guffa

16-Sep-06 20:41

Your statement is contradictory. Are you storing a hexadecimal string in the byte array, or are you storing bytes like 00 ea d4 00?

If you are storing bytes, do you want a value like 00ead400 or just the middle bytes ead4?

Are you storing the bytes in reverse order, i.e. Motorola style, or are you storing them in regular Intel order?

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How to read byt buffer to 4 byt as a offset

Parshant Verma16-Sep-06 0:56

Parshant Verma

16-Sep-06 0:56

Hi How can i read a 4byt offset from a byt buffer in c#

Parshant

Re: How to read byt buffer to 4 byt as a offset

Nader Elshehabi16-Sep-06 1:00

Nader Elshehabi

16-Sep-06 1:00

Hello

how do you store your bytes buffer??

If it's a bytes array:
byte Offset = MyBuffer[3];

Regards

How to know that Datagrid values are modified

vaishali1016-Sep-06 0:38

vaishali10

16-Sep-06 0:38

Hi,
I am working on a Windows based project using C#.
Using VS 1.0 version.
I am using a datagrid.I have a problem, that if the user
modifies the data in the grid, how will we come to know
that there is a change in value in the grid.

Plz help me to solve the prob,since i am new to C#

Thanks in advance

Regards,
Vaishali

Re: How to know that Datagrid values are modified

Nader Elshehabi16-Sep-06 1:04

Nader Elshehabi

16-Sep-06 1:04

Hello

1- Are you using Datagrid or DatagridView?
2- Is your DataGrid Databound to a source or do you poplate it manually?

Regards

Re: How to know that Datagrid values are modified

vaishali1016-Sep-06 1:10

vaishali10

16-Sep-06 1:10

Hi,
1- I am using Datagrid
2- And my DataGrid Databound to a source in database(Mysql).

ie.I have a dropdown box to select say for eg. to select city.
where city list will come from database

Thanks ..
Waitin for the reply

Regards,
Vaishali

Re: How to know that Datagrid values are modified

Nader Elshehabi16-Sep-06 1:24

Nader Elshehabi

16-Sep-06 1:24

If you use a Dataset in your binding, try to check the value of DataSet.HasChanges property.

Regards

webservice

TAREQ F ABUZUHRI16-Sep-06 0:36

TAREQ F ABUZUHRI

16-Sep-06 0:36

i want to make method invocation will will help my customer to take arry of Object

how can make this ??

Palestine

Re: webservice

Nader Elshehabi16-Sep-06 1:16

Nader Elshehabi

16-Sep-06 1:16

Hello

Please delete your previous post and keep only this one.

To know more about creating/using WebServices, Click here[^].

Regards

web service

TAREQ F ABUZUHRI16-Sep-06 0:19

TAREQ F ABUZUHRI

16-Sep-06 0:19

i want to make web service that will return Object

* how can make this web service ????

Palestine

Re: web service

Mohammad Daba'an16-Sep-06 22:57

Mohammad Daba'an

16-Sep-06 22:57

Hi man

visit the following website

WEBSERVICES[^]

hi to all palestinien ones ... yes palestine not others ...

Thanks alot
Hamody

Clustering .net remoting

Abu Shanab15-Sep-06 23:53

Abu Shanab

15-Sep-06 23:53

I built application in .net remoting,any one can know how i can build a clustering server ,this mean if my server fail call another server to complete the process.

Playing .mvw file + C#

Ravikumar Patra15-Sep-06 20:08

Ravikumar Patra

15-Sep-06 20:08

I am using controls at runtime foe palying movie files.

a .mvw file opens if i double click it in mediaplayer. but when i am programatically runs the same in a mediaplayer control. it does not. the error is "Error HRESULT E_FAIL has been returned from a call to a com component". but when I am using a mpeg file then it runs properly.

[Message Deleted]

Syed Mujtaba Hassan15-Sep-06 20:03

Syed Mujtaba Hassan

15-Sep-06 20:03

[Message Deleted]

Re: I am a student of BS(Computer Science) Hons and I have to submit project proposal in a few days. Could somebody help me and share a few project ideas with me so that I could impress my teachers. I shal be realy thankful.

Christian Graus15-Sep-06 21:21

Christian Graus

15-Sep-06 21:21

Syed Mujtaba Hassan wrote:
Hons

When you get to the point of doing honours, you've surely learned how to think for yourself ?

Anyhow, your teacher knows how to use the web....

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: Way too long subject

Guffa15-Sep-06 22:18

Guffa

15-Sep-06 22:18

Subject: A short title describing your question.

Text: The message text containing your question.

Try again. Smile | :)

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Datagrid Combo.

deepaks315-Sep-06 19:18

deepaks3

15-Sep-06 19:18

Hi i want to put a combobox in my datagrid, which i want to bind by xml.
I am using my datagrid in WinForms, and i am using Visual Studio 1.1

Thanks in advance.

Deepak Surana

Re: Datagrid Combo.

Rocky#15-Sep-06 22:26

Rocky#

15-Sep-06 22:26

the easiest way is to upgrade to .net 2.0 bcz I had the same problem a few days ago n I tried many different things too but eventually I upgraded to .net 2 and solved that but if using .net 1.1 is a compulsation then it is something to work on.

u can find one or two useful articles on this very site about making datagridcombobox, do read them out and see 4 urself..

Rocky

Creating New Controls

İsmail Durmaz15-Sep-06 15:33

İsmail Durmaz

15-Sep-06 15:33

i want to create an object like labels, buttons. it has events. i don't want to use UserControl.

i wonder how windows can do these controls and their event functions. Is there any API function or any thing else.

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