Re: Excel Object - C# Discussion Boards

String data into byte array without hex conversion

worked on mine20-Dec-07 3:55

20-Dec-07 3:55

How do I get string data into a byte array, programmatically, without doing a hex conversion. i.e.,
byte[i] = (???)string.Substring(0,2);

I need the programmatic equivelent of:
byte[] bytes = {0x14, 0x55, 0x90, 0x00, 0x01}; or
byte[i] = {0x + string}
I can't make any of this work. Need Guru!

TIA,
Steve

Re: String data into byte array without hex conversion

DannyAdler20-Dec-07 4:53

DannyAdler

20-Dec-07 4:53

Hi there,

Maybe this will put you in the right track:

string StringToConvert = "abc";<br />
//This call will return a byte array with the numeric values of the chars<br />
byte[] bytes = StringToByteArray(StringToConvert);<br />
<br />
private byte[] StringToByteArray(string str)<br />
{<br />
    char[] chars = str.ToCharArray();<br />
    byte[] bytes = Array.ConvertAll<char, byte="">(chars, new Converter<char, byte="">(CharToByte));<br />
    return bytes;<br />
}<br />
private byte CharToByte(char ch) { return (byte)ch; }</char,></char,>

Hope it helps.

Danny

Re: String data into byte array without hex conversion

worked on mine20-Dec-07 5:32

worked on mine

20-Dec-07 5:32

Hi Danny,

This looks like what I'm after except I'm getting two errors when implemented:

Error 1 Using the generic type 'System.Converter<tinput,toutput>' requires '2' type arguments

Error 2 The type arguments for method 'System.Array.ConvertAll<tinput,toutput>(TInput[], System.Converter<tinput,toutput>)' cannot be inferred from the usage. Try specifying the type arguments explicitly.

What did I do wrong?</tinput,toutput></tinput,toutput></tinput,toutput>

Re: String data into byte array without hex conversion

DannyAdler20-Dec-07 22:29

DannyAdler

20-Dec-07 22:29

Sorry, I guess the pasting went wrong, the function should look like this:

private byte[] StringToByteArray(string str)
{
char[] chars = str.ToCharArray();
byte[] bytes = Array.ConvertAll<char, byte>(chars, new Converter<char, byte>(CharToByte));
return bytes;
}

Re: String data into byte array without hex conversion

DannyAdler20-Dec-07 22:34

DannyAdler

20-Dec-07 22:34

private byte[] StringToByteArray(string str)
{
char[] chars = str.ToCharArray();
byte[] bytes = Array.ConvertAll<char, byte>(chars, new Converter<char, byte>(CharToByte));
return bytes;
}

Re: String data into byte array without hex conversion

J4amieC20-Dec-07 5:58

J4amieC

20-Dec-07 5:58

byte[] byteData = System.Text.Encoding.ASCII.GetBytes("Some string i want an array of bytes for");

If ASCII isn't your chosen encoding there are other useful ones predefined such as UTF8

Excel Object

gauthee20-Dec-07 3:36

gauthee

20-Dec-07 3:36

Do we have any pre-requistes before creating an excel object for a windows application developed using c#?

Is there any sort of memory limitation when creating an excel object. Our application runs fine when few processes are running along with the application, however when the number of other processes are increased then an error is displayed " THERE IS NOT ENOUGH MEMORY TO RUN MICROSOFT EXCEL. PLEASE CLOSE OTHER APPLICATION AND TRY AGAIN ". The solution to this error is a system restart, when this error occurs you cannot open any existing excel file too!

Please note that our application has needed excel objects clean up code.
What could be the cause for this error? How to resolve this?

Kindly help!

gauthee

Re: Excel Object

Not Active20-Dec-07 3:42

Not Active

20-Dec-07 3:42

gauthee wrote:
Please note that our application has needed excel objects clean up code.

What does this mean? You need clean up code and you're getting out of memory exceptions? Seems an obvious problem.

only two letters away from being an asset

DLL

anupamwb20-Dec-07 2:55

anupamwb

20-Dec-07 2:55

Hi all,
Someone told in this forum that he got some dlls from this forum.
But i did not get any dll link,can any anyone send such dll link or told me how to find dlls from this site.

thanks.