Re: Code seems to loops indefinitely - C# Discussion Boards

Re: Schedulle a task for some days of the week

baranils13-Dec-09 4:21

13-Dec-09 4:21

Yes of course,

I agree with you, but practicaly I'll still be happy to understand how to setup the windows scheduller programatically

Maybe by simply execute taskschd.exe using System.Diagnostics.Process.Start?

Re: Schedulle a task for some days of the week

PIEBALDconsult13-Dec-09 5:31

PIEBALDconsult

13-Dec-09 5:31

baranils wrote:
execute taskschd.exe

That's how I've done it in the past. But there oughta be a better way.

Re: Schedulle a task for some days of the week

baranils13-Dec-09 5:48

baranils

13-Dec-09 5:48

PIEBALDconsult wrote:
That's how I've done it in the past. But there oughta be a better way.

Do you know some ?

Re: Schedulle a task for some days of the week

PIEBALDconsult13-Dec-09 6:22

PIEBALDconsult

13-Dec-09 6:22

No, and I just found this[^].

Re: Schedulle a task for some days of the week

#realJSOP13-Dec-09 3:42

#realJSOP

13-Dec-09 3:42

I wrote some code for that and use it in a windows service:

Scheduling Future Dates [^]

.45 ACP - because shooting twice is just silly
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"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
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"The staggering layers of obscenity in your statement make it a work of art on so many levels." - J. Jystad, 2001

Re: Schedulle a task for some days of the week

baranils13-Dec-09 4:00

baranils

13-Dec-09 4:00

Thank you John !
I'll have a look on that

Code seems to loops indefinitely

Karthik S Prakash12-Dec-09 6:11

Karthik S Prakash

12-Dec-09 6:11

I am trying to transmit about 75Kbytes of image data at 115200 baud. Ideally it should take about 5 secs. But this code seems to loop forever. Am I missing something obvious here?

#define rows 288
#define cols 352

 for (j=rows-2; j>=0; j-=2)
    {
        for (i = (j*cols); i<((j*cols)+cols); i++)
        {
            cam_output = ram_read(i*4);
            SendBuffer[0] = (cam_output >> 24) & 0xff;
            SendBuffer[1] = (cam_output >> 16) & 0xff;              
            SendBuffer[2] = (cam_output >> 8) & 0xff;
                          
            uart_send(&SendBuffer, 3);    
            
        }        
    }


void uart_send(u8 *DataBufferPtr, unsigned int NumBytes)
{
    int i;
    
    for (i=0; i<NumBytes; i++)
    {
        XUartLite_SendByte(XPAR_UARTLITE_0_BASEADDR, *(DataBufferPtr+i));
    }

}

Regards,

Karthik

Re: Code seems to loops indefinitely

Luc Pattyn12-Dec-09 6:20

Luc Pattyn

12-Dec-09 6:20

Hi,

that is not C# code, so you're in the wrong forum.
your code does not look good
I'm not going to study it in any detail, unless you put it inside PRE tags (you can still edit your message)
is the other side receiving anything? how much?
does your code ever finish (say within calculated time * 10)?

Smile | :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Re: Code seems to loops indefinitely

Karthik S Prakash12-Dec-09 7:16

Karthik S Prakash

12-Dec-09 7:16

@Luc: On the other side, my image file keeps growing > 1.8MB. The code never finishes.

Re: Code seems to loops indefinitely

Luc Pattyn12-Dec-09 7:30

Luc Pattyn

12-Dec-09 7:30

so look at what is in the file; there should be 288/2 * 352 * 3 = about 150KB:
- are the first 150KB what you expect? if not, is there a pattern in the differences?
- what's there after 150KB?

this is call debugging: observe, observe closer, when something isn't what it seems, look at an earlier point, bring the last good point and the first bad point closer together, until you know where it goes wrong, then fix it.

Smile | :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Re: Code seems to loops indefinitely

Karthik S Prakash12-Dec-09 8:09

Karthik S Prakash

12-Dec-09 8:09

Yes, I did check the image. It was garbled. Then I realized my mistake in the calculation of rows and cols... it should be 144 x 176.

But that didnt solve the infinite loop until i was able to debug on hardware. I noticed j decreased to 0 and then increased back to the highest (32bit) value. Realized the mistake of making j unsigned int .

Loop ends now Smile | :)

Thank you!

Re: Code seems to loops indefinitely

Luc Pattyn12-Dec-09 8:17

Luc Pattyn

12-Dec-09 8:17

Some compilers warn when a test is bound to always result in the same value; apparently yours didn't then.
I always use my compiler at the highest warning level, and massage the code until it emits zero warnings!

Smile | :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

Re: Code seems to loops indefinitely

Karthik S Prakash12-Dec-09 9:09

Karthik S Prakash

12-Dec-09 9:09

True. I am compiling this in the Xilinx SDK.

Re: Code seems to loops indefinitely

Richard MacCutchan12-Dec-09 7:25

Richard MacCutchan

12-Dec-09 7:25

Starting with the fact that your code does not compile as it stands, I have got it to run through in a couple of minutes; obviously without the data transfer. I guess you should check that the data is actually getting transmitted OK.

[edit]Also note this is C++ so should be in that forum[/edit]

decode XmlDocument.OuterText

giddy_guitarist12-Dec-09 6:10

giddy_guitarist

12-Dec-09 6:10

hi,

Simple question. I'm trying to get the xml in an XmlDocument variable into a string. Seems like its a tough thing and I tried the OuterText property but it gives me encoded text like : >< So, does anybody have a decent solution to this.

Thanks
Gideon

Re: decode XmlDocument.OuterText

Migounette12-Dec-09 7:27

Migounette

12-Dec-09 7:27

Try this:

StringWriter sw = new StringWriter();
XmlTextWriter xw = new XmlTextWriter(sw);
xmlDoc.WriteTo(xw);
return sw.ToString();

where xmlDoc is your xml doc
Let me know if it works

Re: decode XmlDocument.OuterText

PIEBALDconsult12-Dec-09 9:19

PIEBALDconsult

12-Dec-09 9:19

How about OuterXml ?

Re: decode XmlDocument.OuterText

giddy_guitarist12-Dec-09 20:08

giddy_guitarist

12-Dec-09 20:08

nope, both solutions have encoded text!

SQL sync with SQLCE

redspiderke12-Dec-09 3:19

redspiderke

12-Dec-09 3:19

Hi,

Quick and simple question Smile | :)

Is there a simple way to sync a sql2005 db with a sqlCe database on a mobile device.

Is there a default path on a windows mobile device where i can connect to (c:\....) ?
I need a fixed path on the mobile device to push the updates to.

Thanks for the advice.

grtz
Wouter

Replace "inner list" of a generic class inheriting from List<T> ?

BillWoodruff12-Dec-09 2:13

BillWoodruff

12-Dec-09 2:13

Let's say you define this class (at the namespace level; i.e., outside
a form or whatever)

public class anyDamnList<T> : List<T>
{
    public anyDamnList() { }
}

And you declare and use it ... in a form's code ... with no problems :

anyDamnList<int> aYIntList = new anyDamnList<int>();
aYIntList.Add(100);
aYIntList.Add(200);

Console.WriteLine(aYIntList[1]);

List<int> intList3 = new List<int> { 9, 19, 22, 44 };

aYIntList.Clear();
aYIntList.AddRange(intList3);

Console.WriteLine(aYIntList[3]);

Here's the question : is there any other way than using 'Clear() and then 'AddRange
to replace the "virtual inner list" <T> "embodied" via inheritance in the class ?

1. you cannot assign to an instance of the class : aYIntList = intList3;

You get this error : "Error Cannot implicitly convert type
'System.Collections.Generic.List<int>' to
'WindowsFormsApplication1.anyDamnList<int>'. An explicit conversion
exists (are you missing a cast?_

2. you can't cast like this : aYIntList = (anyDamnList<int>) intList3
: that will NOT give you a compile time error but at run-time you get
: ""Unable to cast object of type
'System.Collections.Generic.List`1[System.Int32]' to type
'WindowsFormsApplication1.anyDamnList`1[System.Int32]'."}

3. I played around with Linq's OfType<> and Cast<> operators

aYIntList = intList3.OfType<int>();
aYIntList = intList3.Cast<int>();

Both of those will throw compile time errors like so : "Cannot
implicitly convert type 'System.Collections.Generic.IEnumerable<int>'
to 'WindowsFormsApplication1.anyDamnList<int>'. An explicit conversion
exists (are you missing a cast?)"

"Many : not conversant with mathematical studies, imagine that because it [the Analytical Engine] is to give results in numerical notation, its processes must consequently be arithmetical, numerical, rather than algebraical and analytical. This is an error. The engine can arrange and combine numerical quantities as if they were letters or any other general symbols; and it fact it might bring out its results in algebraical notation, were provisions made accordingly." Ada, Countess Lovelace, 1844

Re: Replace "inner list" of a generic class inheriting from List<T> ? [modified]

PIEBALDconsult12-Dec-09 3:45

PIEBALDconsult

12-Dec-09 3:45

You could write an implicit (or explicit) conversion operator.

Or write a ClearAndAddRange method.

Edit:

OK, a conversion operator won't work:

user-defined conversions to or from a base class are not allowed
and
user-defined conversions to or from an interface are not allowed

But a copy constructor will work:

public anyDamnList
(
    System.Collections.Generic.IEnumerable<T> Source
)
{
    this.AddRange ( Source ) ;

    return ;
}


anyDamnList<int> ai = new anyDamnList<int> ( intList3 ) ;

modified on Sunday, December 13, 2009 10:54 AM

Re: Replace "inner list" of a generic class inheriting from List<T> ?

BillWoodruff12-Dec-09 7:07

BillWoodruff

12-Dec-09 7:07

Hi PieBaldConsult,

Well, I thought I was writing 'implicit and/or 'explicit conversion operators in the attempts I documented in the question that result in compile-time and run-time errors.

And, while, yes, I could write a ClearAndAddRange method : the whole purpose of the question is part of my "self-education" in Linq which (for me) is best done by posing problems and then trying to solve them.

I have the feeling that somewhere there's a way to use some of the Linq commands like ConvertAll, Cast, OfType that will do the "right thing" easily. to get from one List<int> instance into a form that can be assigned to an instance of 'anyDamnList.

After all, if you build the example and type instanceOfAnyDamnList. ... you get the intellisense you expect including methods like 'Count.

This is the kind of question that Jon Skeet could answer in his sleep Smile | :)

Thanks for responding !

best, Bill

Re: Replace "inner list" of a generic class inheriting from List<T> ?

PIEBALDconsult12-Dec-09 7:42

PIEBALDconsult

12-Dec-09 7:42

You could also wait for C# 4 and covariance or contravariance, whatever it is.