Re: deserialization issue - C# Discussion Boards

Re: Common codebase for C++ and C#? (update)

CPallini7-Jan-09 2:10

7-Jan-09 2:10

Performance and interoperability are often on opposite sides, hence I suppose your task will be hard: Good luck.
Smile | :)

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how to export a datagridview with C# in win appl

rana_cisco6-Jan-09 23:47

rana_cisco

6-Jan-09 23:47

i just want i full code to how i export any datagridview into a csv filein windows applications.i need it immidiatlly

rana sallam

Re: how to export a datagridview with C# in win appl

Eddy Vluggen7-Jan-09 0:18

Eddy Vluggen

7-Jan-09 0:18

rana_cisco wrote:
need it immidiatlly

+5 kudo's for asking nicely.

I are troll Smile | :)

Re: how to export a datagridview with C# in win appl

Dragonfly_Lee7-Jan-09 0:47

Dragonfly_Lee

7-Jan-09 0:47

rana_cisco wrote:
i need it immidiatlly

really?

Tan Li

I Love KongFu~

Re: how to export a datagridview with C# in win appl

Ashfield7-Jan-09 1:30

Ashfield

7-Jan-09 1:30

rana_cisco wrote:
i need it immidiatlly

..along with a dictionary and lessons in manners. The idea is YOU try and write the code and get help on specific problems.

Bob
Ashfield Consultants Ltd

deserialization issue

George_George6-Jan-09 23:41

George_George

6-Jan-09 23:41

Hello everyone,

1.

Here is one of the field of my class. During deserialization, if the counter attribute is null, the deserialization could still be successful. Any ideas to make deserialization be smarter to treat counter as a non-null (must to have value) attribute?

2.

Any other ways to make deserialization be even smarter to treat counter as an integer other than string? (i.e. if in the XML file, counter attribute is assigned to non-numeric value, deserialization will fail.)

[XmlAttribute("counter")]
public string counter;

thanks in advance,
George

Re: deserialization issue

Colin Angus Mackay7-Jan-09 0:43

Colin Angus Mackay

7-Jan-09 0:43

George_George wrote:
Any other ways to make deserialization be even smarter to treat counter as an integer other than string?

Why not just make the counter field an integer in the first place?

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Re: deserialization issue

George_George10-Jan-09 2:19

George_George

10-Jan-09 2:19

Thanks Colin,

I have tried but still InvalidOperationException, the exception message is "There is an error in XML document (1, 14)."

Here is my code, any ideas?

using System;
using System.ComponentModel;
using System.IO;
using System.Xml.Serialization;


public class Bar
{
    [XmlAttribute(DataType = "int", AttributeName = "counter")]
    [System.ComponentModel.DefaultValueAttribute(0)]
    public int counter;
}
static class Program
{
    static void Main()
    {
        Bar a = Read(@"<Bar counter=10/>");

        return;
    }

    static Bar Read(string xml)
    {
        Bar bar = (Bar)new XmlSerializer(typeof(Bar)).Deserialize(new StringReader(xml));
        return bar;
    }
}

regards,
George

code to add cut,copy,paste property for a picturebox on form in vc#.net

shabanab6-Jan-09 23:30

shabanab

6-Jan-09 23:30

iam not able to cut,copy,paste a usercontrol(picturebox) on a form.As such there is no buitin cut,copy,paste property for a picturebox.

i want code to add cut,copy,paste property for a picturebox control on the form design at runtime in vc#.net.

Please let me know how to add a property for the usercontrol . or let me know if u need any more details regarding this.

shabana

Re: code to add cut,copy,paste property for a picturebox on form in vc#.net

DaveyM697-Jan-09 1:33

DaveyM69

7-Jan-09 1:33

You will need to add a context menu for right click functionality, keyboard handlers using keydown or keypress for keyboard shortcut functionality and use the System.Windows.Clipboard or System.Windows.Forms.Clipboard class.

Additionaly you may need to override WndProc, PreProcessMessage and maybe ProcessMnemonic.

Some or all of these should solve your problem.

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)

break through 2 loops

Deresen6-Jan-09 23:08

Deresen

6-Jan-09 23:08

Hey everyone,

I would like to break through 2 loops with just one rule.
Something like this:

for(;;)//loop 1
{
  for(;;)//loop 2
  {
    //do something to exit loop 1
  }
}

Re: break through 2 loops

Luc Pattyn6-Jan-09 23:15

Luc Pattyn

6-Jan-09 23:15

Hi,

there are several ways of breaking out of several loops:
1. change the state such that all the continuation tests will fail, and break (one way of achieving this is by adding a boolean test to each and every continuation test)
2. create a method that contains nothing but the loops, and return where you want to break out;
3. throw an exception and catch it where you need to.

Smile | :)

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Love, happiness and fewer bugs for 2009!

Re: break through 2 loops

Deresen6-Jan-09 23:25

Deresen

6-Jan-09 23:25

Yes I've thought of those options too, but I don't want to break with extra code, not even a boolean.

With 'break;' you will exit one loop. But isn't there something like break * 2;

Re: break through 2 loops

N a v a n e e t h6-Jan-09 23:28

N a v a n e e t h

6-Jan-09 23:28

Deresen wrote:
But isn't there something like break * 2;

You will end up in goto.

Navaneeth

How to use google | Ask smart questions

Re: break through 2 loops

Luc Pattyn6-Jan-09 23:31

Luc Pattyn

6-Jan-09 23:31

Hi,

No. Although there are languages that support break <count> C# isn't one of them.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Love, happiness and fewer bugs for 2009!

Re: break through 2 loops

Rob Philpott6-Jan-09 23:43

Rob Philpott

6-Jan-09 23:43

Luc Pattyn wrote:
3. throw an exception and catch it where you need to.

Exceptions to control program flow? Isn't that a crime?

Regards,
Rob Philpott.

Re: break through 2 loops

Luc Pattyn6-Jan-09 23:50

Luc Pattyn

6-Jan-09 23:50

Hi,

Rob Philpott wrote:
Exceptions to control program flow? Isn't that a crime?

Not always. The OP didn't mention why nor how often he would break out of all loops.

Exceptions always operate on program flow, they exist to make life easier and code more reliable. Not making good use of available means would be a crime. Depending on circumstances, one has to make a good choice, that is why I gave three possibilities.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Love, happiness and fewer bugs for 2009!

Re: break through 2 loops

CPallini7-Jan-09 0:14

CPallini

7-Jan-09 0:14

Rob Philpott wrote:
Exceptions to control program flow? Isn't that a crime?

Nope, if the condition that breaks the loops is exceptional. Big Grin | :-D

Re: break through 2 loops

Rob Philpott7-Jan-09 0:23

Rob Philpott

7-Jan-09 0:23

Agreed. But use otherwise deserves a slap!

Regards,
Rob Philpott.

Re: break through 2 loops

CPallini7-Jan-09 0:11

CPallini

7-Jan-09 0:11

4.use goto. Roll eyes | :rolleyes:

Re: break through 2 loops

Luc Pattyn7-Jan-09 0:19

Luc Pattyn

7-Jan-09 0:19

Absolutely. That is covered by "Not making good use of available means would be a crime". Big Grin | :-D

Luc Pattyn [Forum Guidelines] [My Articles]

Love, happiness and fewer bugs for 2009!

Re: break through 2 loops

DaveyM697-Jan-09 1:11

DaveyM69

7-Jan-09 1:11

Luc Pattyn wrote:
Absolutely

I agree, in fact this is the perfect example of when a goto may be the most appropriate. It can be a useful statement - it's only because it can be (and has been) wildly misused that it's frowned upon. Big Grin | :-D

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)

Re: break through 2 loops

Deresen7-Jan-09 9:22

Deresen

7-Jan-09 9:22

I love the goto statement, so I will use it.
It let's me think of the good times programming microcontrollers in assembly!!!

Re: break through 2 loops

User 66586-Jan-09 23:17

User 6658

6-Jan-09 23:17

You can use break for the second loop and a boolean variable to be used inside the condition for loop 1 and set this to true from loop 2.

regards

modified 12-Sep-18 21:01pm.

Re: break through 2 loops

HosamAly7-Jan-09 9:16

HosamAly

7-Jan-09 9:16

If you were using Java, I'd say "break OuterLoop;" (by adding the label "OuterLoop:" before the outer loop). But since you're in C#, you need to do this:

for ( ; ; )
{
    for ( ; ; )
    {
        goto EndOfLoop;
    }
}
EndOfLoop:
    // your code

(You may also check the second example in this[^] MSDN reference page, although I wouldn't like to see it in actual code!)

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