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Guffa wrote: An identifier in C# can never ever start with a digit.
Bonus question: can identifier start with digit in IL? (I gave up after maybe 2 min. of googling  )
[ My Blog] "Visual studio desperately needs some performance improvements. It is sometimes almost as slow as eclipse." - Rüdiger Klaehn "Real men use mspaint for writing code and notepad for designing graphics." - Anna-Jayne Metcalfe
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I hope you didn't bet too much, or you could end up buying your teacher a Porsche. He's right, and you're wrong. Variables can't start with a number as you found out when you tried to compile it.
Deja View - the feeling that you've seen this post before.
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but if i enum ??
enum(1a,2a,3a,4a,5a)
nemanja
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Enum members are not variables, and even those identifier cannot start with a number.
Had you tried it yourself, you would have found out quite easily.
But, in either case, you still lose...
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conemajstor wrote: I bet with the teacher
Do you have a gambling problem? That's like betting on a three legged dog!
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my teacher is one peace of sh*t ... im 92' and i am programming 5 years now and he teaches me whats a computer .. how to switch it off , on, het yells to me when i am not listening him .... and this question is for Pascal but i havent found pascal forum ... we learn pasacl becaues my teacher is 65 years old and dont know anything other .... i won 3 bets allready from him!!!!
nemanja
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My sympathys are with your teacher. You don't listen to him, and you still haven't learned your lesson.
conemajstor wrote: won 3 bets allready from him
But not this one.
Deja View - the feeling that you've seen this post before.
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conemajstor wrote: im 92'
You are ninety-two feet? Or did you perhaps mean '92? 
conemajstor wrote: i am programming 5 years now
Oh, a newbie.
conemajstor wrote: het yells to me when i am not listening him
Go figure...
conemajstor wrote: we learn pasacl
That's good. Pascal is an excellent language for learning programming.
conemajstor wrote: becaues my teacher is 65 years old and dont know anything other
I seriously doubt that.
conemajstor wrote: i won 3 bets allready from him
So now you think that you know anything?
---
"Anything that is in the world when you're born is normal and ordinary and is just a natural part of the way the world works. Anything that's invented between when you're fifteen and thirty-five is new and exciting and revolutionary and you can probably get a career in it. Anything invented after you're thirty-five is against the natural order of things."
-- Douglas Adams
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There's nothing wrong with being 65. Unless you're the leader of the British Liberal Democrats...
Paul Marfleet
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You really need to listen. If he's your teacher, he's better than you. Usually, but now, duh. Period.
The most knowledge doesn't mean the most wise...
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> .... and this question is for Pascal but i havent found pascal forum ...
Sorry, but it's not valid in Pascal, either.
(unless you use the font-edit method below)
Thomas Bates
I want to live in Theory. Everything works in Theory.
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10 bucks says it falls down!
Ninja (the Nerd)
Confused? You will be...
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You could always... cheat.
Fonts, all they are a little pictures really. What is it, courier new that compilers mostly use?
Anyway, see if you can get yourself that font, edit out some symbol that is allowed, and make it a number.
To the user, the first letter in the variable name is a number, but to the compiler its just a symbol, or another letter.
Oh, by the way, cheating is bad. Don't do it
My current favourite word is: Waffle
Cheese is still good though.
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Hi All,
I have a Form in and a class, I need to access a control on Form1 from a other class. So i can populate the data in those control using other class. Please Help! if possibile please show some code.
I.e--> //Both classes in same project
class Form1
{
//All control in this class
ListBox list1 = new ListBox();
TextBox box1 = new TextBox();
}
class myClass
{
//Need to access a control of Form1 and fill with data, lets say we want fill list1 and set bo1.Text =
}
A.Asif
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There is more than one way to do this. It depend on the context.
I will show you 2 way, the first one is simple if the class only update this form and they are closely related. The other is an exemple for a class that can update this data in differents forms that can have differents controls but the same data.
***** Example 1:
<br />
class Form1<br />
{<br />
<br />
private ListBox list1 = new ListBox();<br />
private TextBox box1 = new TextBox();<br />
<br />
public ListBox List1 {<br />
get { return list1;}<br />
}<br />
<br />
public TextBox Box1{<br />
get { return box1;}<br />
}<br />
<br />
<br />
<br />
}<br />
<br />
class myClass<br />
{<br />
UpdateForm1(Form1 frm)<br />
{<br />
frm.List1.Items.Add("TEST");
frm.Box1.Text = "TEST";<br />
}<br />
<br />
}<br />
***** Example 2:
<br />
interface IUpdateForm<br />
{<br />
UpdateData(string[] items, string newText);<br />
}<br />
<br />
class Form1 : IUpdateForm<br />
{<br />
<br />
private ListBox list1 = new ListBox();<br />
private TextBox box1 = new TextBox();<br />
<br />
public Form_Load()<br />
{<br />
new myClass().UpdateForm(this);<br />
}<br />
<br />
public UpdateData(string[] items, string newText)<br />
{<br />
this.list1.Items.Add(items);<br />
this.box1.Text = newText;<br />
<br />
}<br />
<br />
}<br />
<br />
class myClass<br />
{<br />
UpdateForm(IUpdateForm uptFrm)<br />
{<br />
uptFrm.UpdateData(someArray, someText);<br />
}<br />
<br />
}<br />
There are more possibilities but theses two examples will give you the idea.
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THANKS A LOT!! however, can you please take a look my code and tell me what is wrong or even if this possible as I am new to C# ,but got job as C# programmer lolo ,and trying to stick to it. Also can I create property for DataGridView and use it as you did show for textBox and listBox and do the same thing? as my origional problem is to fill the DataGrid . Please Help.
Thanks,
class1
{
internal DataGridView DataView1 = new DataGridView();
}
class2
{
class1 fillData = new class1(); //This grid has two columns
for(int i = 0; i < someArr.Length; i++)
{
fillData.DataView1.Rows[0].Cells[0].Value = "ASIF";
fillData.DataView1.Rows[0].Cells[1].Value = "212-222-222";
}
}
A.Asif
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From what I see, you need to bind some data to your DataGridView. I dont have enough informations to give you a complete answer but I will give you some pointers.
First, to add some data to your DataGridView, you should use the databinding and let .NET do the job for you.
Using a second class to access the data is a good idea. You should check some design idea and best practice in multi-tier applications and separate your data access, business logic and rendering (presentation layer). You will see that a lot of the things that relate to data access on .NET application already exist in the framework and you dont need to reinvent the wheel.
A very partial example could look like this :
class class1
{
internal DataGridView DataView1 = new DataGridView();
public Rebind()
{
DataAccessor cls = new DataAccessor();
DataView1.DataSource = cls.GetData();
DataView1.DataBind();
}
}
class DataAccessor
{
public DataSet GetData()
{
DataSet data =
return data;
}
}
See also
Hope that help.
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There are many ways to do it, but IMO, it's best to separate the class (business object) from the UI, unless the class is specifically used for updating Form1.
myClass should provide data or values only, as public properties, it should be up to the form to retrieve the value from myClass, instead of myClass updating the UI elements directly.
class Form1
{
private myClass theClass;
public Form1()
{
theClass = new myClass();
theClass.DoSomeCalculation();
UpdateUI();
}
private void UpdateUI()
{
// Update ListBox from theClass.ListBoxValue
// Update TextBox from theClass.TextBoxValue
}
}
class myClass
{
public string[] ListBoxValue { get; set; }
public string TextBoxValue { get; set; }
public void DoSomeCalculation()
{
}
}
YMMV.
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Hello everyone,
Is there any way that I can check to see my Windows Application on what Operating System is running? I am trying to see if the user is using XP or Vista.
Thank you very much for your help.
Khoramdin
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Try with this:
System.OperatingSystem osInfo =System.Environment.OSVersion;
nemanja
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I have a log that outputs a line like this;
BATTERY VOLTAGE RESTORED
Note the blank(whitespace) after the word RESTORED, and then an odd Ascii character at the end.
I need to eliminate everything after the word restored and terminate the line at that point.
Thanks,
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You could iterate through the characters in the string L-R and check the ASCII code of each character. As soon as you find a character whose ASCII code is outside of a certain range e.g. not a letter or number, return a string containing all the characters up to but not including that character.
Alternatively, if you know that only the last character isn't needed, use String.Substring to return a string that contains every character in a line minus the last character.
Paul Marfleet
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The problem with the L-R is that the ASCII is a random generated item. Not consistant for each entry.
I didn't think about the string.substring method. I will have to give that a look.
Thanks,
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By L-R I mean process the string contents from left to right.
Check each character until you find one whose ASCII code that isn't valid for your purposes. Consult a table of ASCII codes to determine what the valid ranges might be.
Paul Marfleet
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Got it. I think I can mangle it from here!
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