Re: Add two zéro after a comma - C# Discussion Boards

Add two zéro after a comma

16-Feb-09 2:25

have you solved your problem with the other posts?

komathyc wrote:
If the word contain 8 charcter, i want to print the 5th character

Is there a requirement for you to get a character based on the length of the word?

Of course i you had posted a thanks

If only MySelf.Visible was more than just a getter...

A person can produce over 5 times there own body weight in excrement each year... please re-read your questions before posting

abbd16-Feb-09 1:07

abbd

16-Feb-09 1:07

Hello

How we can add two zéro after a comma, for exemple the number 344,5 that transforme on 344,50, and the nmber 333 to 333,00, Thank you verry mutch.

Kristian Sixhøj16-Feb-09 1:14

Kristian Sixhøj

16-Feb-09 1:14

Console.WriteLine("{0:n2}", 17000)

Would output: 17.000,00

Kristian Sixhoej
"You can always become better." - Tiger Woods

musefan16-Feb-09 1:14

16-Feb-09 1:14

try this...

string number = "344";//an example

if(number.Contains(','))//already has comma
{
string[] split = number.Split(',', StringSplitOptions.RemoveEmptyValues);
//not 100% sure on the string split option code

if(split.Length == 1)//nothing after the comma
number += "00";
else if(split[1].Length == 1)//need to add 1 zero
number += "0";
//else the number is already as desired

}
else//no comma
number += ",00";

If only MySelf.Visible was more than just a getter...

A person can produce over 5 times there own body weight in excrement each year... please re-read your questions before posting

Pete O'Hanlon16-Feb-09 1:34

Pete O'Hanlon

16-Feb-09 1:34

I'm sorry to tell you, but this is an extremely bad idea. Basically, if this application ran in a culture on my machine, then it wouldn't work because we use the decimal as the separator, rather than commas. Commas are used here to denote thousands, millions, etc. For instance, we would write 3,442,167.00 which would be written out as garbage by your code.

What you should do, of course, is use a string formatter and actually apply the appropriate culture. That's it - nothing complicated.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

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musefan16-Feb-09 1:45

16-Feb-09 1:45

well i dont recall reading anything about different cultures being an issue, for all i know its a simple homework assignment that is to show the logic behind the simple process in question.

Personally i would most likely use the string format method if i needed that kind of functionality, but as i know i can always count on others to provide the one liners, i like to give a bit of an idea to how the process could be done (that way people may learn to learn).

what if at some point the requirement was to put in different chars (for whatever reason) that are not supported by the formatting - yes you could format it then do a replace on the required chars, but then what if they what different chars for the different seperators i.e. thousands = ',' millions = '~' etc.

Well then they would just be back in the forums asking how its done, atleast giving an example of how this is done they may stand a chance to figure things out for themselves if need be, which surely is a step in the right direction for any programmer, no?

If only MySelf.Visible was more than just a getter...

A person can produce over 5 times there own body weight in excrement each year... please re-read your questions before posting

Tony Pottier16-Feb-09 4:22

Tony Pottier

16-Feb-09 4:22

I couldn't agree more. This is extremely bad code. It's actually amazing to see that people still do stuff like that nowadays.

And the worst of all, this is really well documented by Microsoft.

http://msdn.microsoft.com/en-us/library/f71z6k0c.aspx[^]

musefan16-Feb-09 5:36

16-Feb-09 5:36

Tony_P wrote:
It's actually amazing to see that people still do stuff like that nowadays

where have you seen people using code like i suggested?

If only MySelf.Visible was more than just a getter...

A person can produce over 5 times there own body weight in excrement each year... please re-read your questions before posting

Guffa16-Feb-09 5:15

Guffa

16-Feb-09 5:15

There's a one-liner for that too.

number+=number.Contains(',')?new String('0',number.indexOf(',')-number.Length+3):",00";

Wink | ;)

Despite everything, the person most likely to be fooling you next is yourself.

modified on Monday, February 16, 2009 4:58 PM

musefan16-Feb-09 5:43

16-Feb-09 5:43

very nice

If only MySelf.Visible was more than just a getter...

A person can produce over 5 times there own body weight in excrement each year... please re-read your questions before posting

Dynamically assign values to instance

stancrm16-Feb-09 1:21

stancrm

16-Feb-09 1:21

for example :

double dbl = 344.5;
string dblInStr = dbl.ToString("F2"); // 344,50

double dbl = 333;
string dblInStr = dbl.ToString("F2"); // 333,00

Stevo Z16-Feb-09 0:59

16-Feb-09 0:59

Hi Guys,

I'd like to dynamically assign values to a known class instance based on the Property name. An example describes perfectly what I want to do: There is a class

public class AClass
    {
        public string _aValue;

        public string AValue
        {
            get { return _aValue; }
            set { _aValue = value; }
        }
    }

and I want to assing value to AClass.AValue without actually explicitly writing:

AClass aInstance = new AClass();
aInstance.AValue = "value";

and now comes the best part. I'd like to avoid reflection as much as possible, because performance matters. I could go and look for a property named "AValue" and do

typeof(AClass).GetProperty("AValue").SetValue(aInstance, "value", null);

however that's veery slow. It's got to be possible to do that some other way, Linq works like this and it's not slow.

any ideas?

zilo

musefan16-Feb-09 1:05

16-Feb-09 1:05

Could try creating a method in the class that takes param name and value, then do a switch and assign the value to the property required

If only MySelf.Visible was more than just a getter...

A person can produce over 5 times there own body weight in excrement each year... please re-read your questions before posting

Stevo Z16-Feb-09 1:15

16-Feb-09 1:15

thanks for the idea, for now something like that is my workaround solution.

However I wanted to avoid writing special code into the AClass itself as well. I was thinking of something generic that could either AClass inherit from or a Wrapper class.

zilo

DaveyM6916-Feb-09 1:22

DaveyM69

16-Feb-09 1:22

If it's only the one property you could use an implicit operator overload.

public class AClass
{
    public AClass() : this(string.Empty) { }
    private AClass(string aValue)
    {
        AValue = aValue;
    }
    public static implicit operator AClass(string aValue)
    {
        return new AClass(aValue);
    }
    public string AValue
    {
        get;
        set;
    }
}

AClass aInstance = "Test String";
Console.WriteLine(aInstance.AValue);

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)

Stevo Z16-Feb-09 1:25

16-Feb-09 1:25

Interesting idea, but... It's not only one, there will be many properties like this within AClass. And it needs to be done outside of constructor.

zilo

DaveyM6916-Feb-09 1:59

DaveyM69

16-Feb-09 1:59

Maybe extension methods could work. Create an extension method ToAClass for each type, and also pass the AClass instance.

public static class ExtensionMethods
{
    static public void SetAClass(this string value, AClass instance)
    {
        instance.AString = value;
    }

    static public void SetAClass(this int value, AClass instance)
    {
        instance.AInt = value;
    }
}
public class AClass
{
    public string AString
    {
        get;
        set;
    }
    public int AInt
    {
        get;
        set;
    }
}

AClass aInstance = new AClass();
"Test string".SetAClass(aInstance);
123.SetAClass(aInstance);

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)

Stevo Z16-Feb-09 2:11

16-Feb-09 2:11

Anyhow, whether is it extension methods or not, I'll have to create them dynamically using reflection and then just call those methods. I think I have a better idea now, thanks

zilo

S. Senthil Kumar16-Feb-09 1:22

S. Senthil Kumar

16-Feb-09 1:22

Zilo(svk) wrote:
and I want to assing value to AClass.AValue without actually explicitly writing

It's difficult to answer without knowing why. Is it because you don't know the type at compile time?

Regards
Senthil [MVP - Visual C#]
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Stevo Z16-Feb-09 1:27

16-Feb-09 1:27

Yes. I'm loading the class from dll as

Assembly.LoadFile(string file);

And I'd like to keep AClass as simple as possible, without any specific code to read or write values into it. It's just a data container.

zilo

S. Senthil Kumar16-Feb-09 1:55

S. Senthil Kumar

16-Feb-09 1:55

Well, LINQ knows the types of data objects at compile time, so there's no similarity there.

Without reflection, I guess your best bet is emitting the IL directly[^].

Regards
Senthil [MVP - Visual C#]
_____________________________
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Stevo Z16-Feb-09 2:13

16-Feb-09 2:13

It doesn't have to, I'm using those classes to work with linq as well and it's working fine. Thanks for the suggestion, that looks to be the only way to go.

zilo