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Expose a property that does what you want, and call it.
Christian Graus - Microsoft MVP - C++
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This is what I couldn't do.
I made form1.listbox1 as public, then I tried to use from form2: form1.listbox1
but i don't have .listbox1 in the list of form1. how can I do this?
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Anonymous wrote:
I made form1.listbox1 as public
Don't - that's terrible design.
Anonymous wrote:
then I tried to use from form2: form1.listbox1
So form1 is the variable that holds an instance of the form1 in question ? It's a floating dialog ?
Anonymous wrote:
how can I do this?
I'd say the problem is that you're typing in the class name, which won't work, you'll only see static methods there. You need to have an instance of the form in order to change it's properties. Which means you should have a member variable for a dialog you're about to show, or a modeless dialog. Then you can set properties on it, but properties of controls will only work if the form has been created and is visible. Otherwise, they need to be stored and acted on in the event handling cycle of the form being created and shown.
Christian Graus - Microsoft MVP - C++
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its a terrible design, but I'm working on sombody else code, and its the fastest way.
form2 is a floating dialog. form1 is already open. I don't know how can I have an instance of the form, I know only how to have a new instance of form:
someform varForm = new someform();
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Anonymous wrote:
its a terrible design, but I'm working on sombody else code, and its the fastest way.
Bad design is ALWAYS the fastest way, why else would anyone write crap code ?
So you want to change something in form1, from form2 ? From what you said you tried, you're obviously lost at sea. A form is a class, and you can have multiple instances of that class. To change something in an instance, you need to have that instance, or a reference to it. Seeing as you're looking for quick and ugly, you can make Form2's constructor take an instance of Form1, and pass in this when you create form2. Then you need to store that variable in Form2 and you can set it's properties.
OR, if you want to spend 30 seconds doing it properly, define a delegate in Form2, and when you create it, set the delegate to call a function in Form1. Then Form2 can notify Form1 of events in a nice, OO manner.
Christian Graus - Microsoft MVP - C++
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"you can make Form2's constructor take an instance of Form1"
I didn't succeed in doing this )-: do you have an example, maybe?
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This is not an insult - abandon this project now. You should not be working on someone elses code, you should be reading a couple of basic programming books.
Having said that,
private Form1 form1;
public Form2(Form1 theForm)
{
form1 = theForm;
}
// Hide the default constructor.
private Form2(){}
Christian Graus - Microsoft MVP - C++
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I have a lot of experience with software programming, but not at all with this language. but I can't abandon it. )-':
anyway, thank you very much for your helping!
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Anonymous wrote:
I have a lot of experience with software programming, but not at all with this language. but I can't abandon it. )-':
Fair enough. I'd have expected the languages you could know without knowing how to modify a constructor would be limited. Either way, do it properly, or pay the price later.
Christian Graus - Microsoft MVP - C++
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Can somebody make the regex expression described below for me?
Consider the following "main" string...
Day,Amount,Direction;3,100,West;5,43,North;5,44,North West;7,54,South;2,5995,East;,,;,,;,,;54,35345,;,543,North;6,,West
Can you make an expression that will match each groupe of 3 items inbetween the semicolons? Example matches would be..
Day,Amount,Direction<br />
3,100,West<br />
5,43,North<br />
5,44,North West (Make sure you preserve the space)<br />
7,54,South<br />
2,5995,East<br />
,,<br />
,,<br />
,,<br />
54,35345,<br />
,543,North<br />
6,,West
The expression should be along the lines of this: (.*?),(.*?),(.*?)(?=; ), that's all I could come up with. In engish I want the regex to do this:
Match any number of words, including nothing(seperated by a comma)Match any number of words, including nothing(seperated by a comma)Match any number of words, including nothing(ended with a semi-colon, but don't include in the match)
The main premise here is the "including nothing".
So If I run the expression "5,," against the "main" string above it should return 2 matches:
5,43,North<br />
5,44,North West (preserve white space)
It would return those because the expression would match the words in the expresion and if it's blank it would match anything.
Another example, if I ran ",Day," against the "main" string it would return 1 result:
Day,Ammount,West, if I ran "3,100,West" it would return 1 match, etc.
It would really help if somebody could figure out an expression to match something like this. If you have any questions just ask.
Thanks.
/\ |_ E X E GG
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I thought I did this already :
([^,]*,[^,]*,[^,]*);
this will match all but the ;, you can put a ? next to the ; to make it optional,
([^,]*,[^,]*,[^,]*);?
If you replace [^,]* with Day, for example, then you get the match you're looking for. ( you get a search as well ).
Christian Graus - Microsoft MVP - C++
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I didn't know it would work again in this way. One thing though... Is there a way to exclude the ";" from the matches? The question mark didn't work. I'm running it on this string...
/\ |_ E X E GG
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eggie5 wrote:
I didn't know it would work again in this way. One thing though... Is there a way to exclude the ";" from the matches? The question mark didn't work. I'm running it on this string...
The question mark makes the ; optional. The brackets create a group which excludes the ;. It's $1.
Christian Graus - Microsoft MVP - C++
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OH, and by the way. For some reason it skips the last group in the string Day,Amount,Direction;3,100,West;5,43,North;5,44,North West;7,54,South;2,5995,East;,,;,,;,,;54,35345,;,543,North;6,,West
/\ |_ E X E GG
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([^,]*,[^,]*,[^;,]*);?
This matches the last group. The ? means the ; is optional, without it, you won't match the last group.
Christian Graus - Microsoft MVP - C++
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([^,]*,[^,]*,[^;,]*);?
Is this the final expression I should use? Because, you posted a couple and I'm confused. This particular expression when ran against this string ...
Day,Amount,Direction;3,100,West;5,43,North;5,44,North West;7,54,South;2,5995,East;,,;,,;,,;54,35345,;,543,North;6,,West
... returns all the groupes of three correctly.
Day,Amount,Direction;
3,100,West;
5,43,North;
5,44,North West;
7,54,South;
2,5995,East;
,,;
,,;
,,;
54,35345,;
,543,North;
6,,West
However, I would like to be able to replace a part of the expression with a number or a word, eg.
(5,[^,]*,[^;,]*);?
(Day,[^,]*,[^;,]*);?
([^,]*,44,[^;,]*);?
([^,]*,[^,]*,North West);?
([^,]*,[^,]*,North);?
Day, Ammount, Direction
etc...
It might help to visualize the above string as an HTML table (because that's what it is)
Can you tell me how to use your expression to do queries like above?
/\ |_ E X E GG
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Don't worry about the last message i can just add a semi colon to the end and it works. But can you make it so it won't include the semicolon in the match?
/\ |_ E X E GG
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To reiterate:
([^,]*,[^,]*,[^;]*);?
This matches all including the ;. $1 is the group within the match that doesn't include the ;.
Christian Graus - Microsoft MVP - C++
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Hi,
I would like to use this expression, but I'm am confused about how to modify it for use with this input string:
Day;Amount;Direction
How would the regex change? would it be:
([^;]*;[^;]*;[^;]*)
/\ |_ E X E GG
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IS it possible to integrate c# with PHP?
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One way, but not the other. As php is not a compiled language, c# can not directly call php code. A php page might be able to use a dll written in c#.
C#.net pages and php pages can work in the same web. Interaction between the pages has to be done using querystrings, cookies, files or database, though.
---
b { font-weight: normal; }
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Depends on what you mean by "integrate". There is no limit to the number of "modules" your web server can process. A web server can host ASP.Net with C# code behind as well as have PHP.
So what do you mean by "integrate"? Web applications written in ASP.Net can live besides PHP web applications. As long as you keep the abstraction at the Http level, web applications can "talk" to each other just fine. If you were thinking they could share data structures below web queries/posting though that is not possible.
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trying to embed a legacy COM dll in c# form. ABle to create the object but not able to dereference one of it's fields. It should be a float array -->
GSpcIOLib.GSpcIO myspc = new GSpcIOLib.GSpcIO();
myspc.OpenFile("c:\\work\\honeydew.spc");
object xfloat = myspc.XPoints;
if I view xfloat in the debugger I can see the array of floats but if I try and do something like this float myfloat = xfloat[1]; I get an error -->
Error 1 Cannot apply indexing with [] to an expression of type object
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You can't do much with an object without specifying what it really is. If you have an array of floats, you can either access it by casting the object to a float array:
myfloat = ((float[])xfloat)[0];
or by declaring xfloat as a float array:
float[] xfloat = myspc.XPoints;
---
b { font-weight: normal; }
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