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Thanks alot F16I ! I think I see what I was doing wrong now. Much obliged !
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Hi all,
I am new to Window services.
How can i make a http request through a windows service.
For a particular amount of time the request must be invoked .
Please reply to me.
Thanks and regards
Narendra Mohan.S
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Just like you would do it in a winforms-app - you just have to watch out not to run into CAS issues (normaly a windows-service runs in a local-service account with fewer rights - if you've got some Security-exceptions try running the service as administrator (for debug-purposes!)
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Hi,
I'm writing a simple control that will "grow down" vertically as the user types.
In this case 'word-wrap' must be on, and I want to detect a word-wrap event and resize the control appropriately.
I can't find any top-level control event triggred by a word-wrap. Yes, I have looked through the CodeProject archives, already, for some similar example.
Appreciate any clues. Perhaps a wndProc is required ?
Will look forward to posting working example to CodeProject.
thanks ! Bill
"The greater the social and cultural distances between people, the more magical the light that can spring from their contact." Milan Kundera in Testaments Trahis
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I can't find anything helpfull either.
All i can suggest is selecting a monotype font, so that you know the width of everyt character, and then work out the height of the text yourself, comparing this to the hieght of the control. And then adjusting as necessary.
So, if every character was 6px wide and 8px high, and the text box was say, 300px wide:
string[] text = richTextBox.Lines;
int height = 0;
foreach(string line in text) {
int width = line.Length*6;
height += 300/width;
}
this.richTextBox.Height = height*8;
I think that would work out.
EDIT:Alternitavly, you can inherit from the control, and look into the paint event to see what the drawing does, but that might be a little more complicated.
Alternitavly again, which may be a better solution, would be to inhertin the control, and do the drawing yourself, that way you would know exactly how much space the text takes up. You could make an article of it. Infact, if you don't, i will. (So, that would be 3 articles i must get around to doing  )
EDIT: fixed a slight mathamatical error
My current favourite word is: Bauble!
-SK Genius
modified on Sunday, December 16, 2007 1:02:24 PM
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Thanks for your input -SKGenius !
I'm certainly not going to "get down" with the 'Paint even any time, so I do hope you'll do an article on that approach, but I suspect that there is an API somewhere that can be used in a wndproc or something to get a word-wrap event.
best, Bill
"Education consists mainly in what we have unlearned." Mark Twain
"The greater the social and cultural distances between people, the more magical the light that can spring from their contact." Milan Kundera in Testaments Trahis
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Well unfortunately this wouldn't work, each character has a different width with true type fonts.
There is such a thing called kerning in which you could compute it, I am looking for the formula myself.
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I'm after a bit of guidance, here's my story... 
For learning purposes I have built a very simple Web Service which returns a List<model></model>, which is a list of models (or model kits - Spitfires, Hurricanes, Mustangs, Naval Ships and etc).
It's very basic, but it works which is good.
I also have a client application I built in VS 2008 - I used the Wizard, and WCF went ahead and did its magic - which is also good, and works.
However, I'd like to enable the column header clicking and sorting in the dataGrdidView against this bound List, which currently is not working. Ideally I want all sorting and whatnot to happen on the client in order to prevent repeated round trips to the web service.
I have a work around which involves using a healthy dose of reflection against the List in order to build a DataTable, which has built in support for sorting and ordering, however I'm not entirely convinced that this is the "right" solution given:
a) I came up with it, so it's bound to be wrong
b) Reflection has a performance overhead (well, not my machine, which is a power house of brute computational force... but you see my point)
c) I'm sure there's a simpler solution which I don't know about
So the question is, how can I enable sorting and ordering against this List without relying on my "workaround". I've had a look in the generated Model class, and it has all manner of dire warnings about changes being lost and so on, so I guess that rules changing that out... any thought?
"On one of my cards it said I had to find temperatures lower than -8. The numbers I uncovered were -6 and -7 so I thought I had won, and so did the woman in the shop. But when she scanned the card the machine said I hadn't.
"I phoned Camelot and they fobbed me off with some story that -6 is higher - not lower - than -8 but I'm not having it."
-Tina Farrell, a 23 year old thicky from Levenshulme, Manchester.
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Ah ha, IComparer to the rescue... almost. It seems that I need to do some abstracting/refactoring and reflection may still come in to play as it doesn't appear that I can send a sort direction into an IComparer, unless anyone knows differently?
"On one of my cards it said I had to find temperatures lower than -8. The numbers I uncovered were -6 and -7 so I thought I had won, and so did the woman in the shop. But when she scanned the card the machine said I hadn't.
"I phoned Camelot and they fobbed me off with some story that -6 is higher - not lower - than -8 but I'm not having it."
-Tina Farrell, a 23 year old thicky from Levenshulme, Manchester.
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Rapidly coming to the conclusion that using reflection and converting to a DataTable is the best option afterall...
"On one of my cards it said I had to find temperatures lower than -8. The numbers I uncovered were -6 and -7 so I thought I had won, and so did the woman in the shop. But when she scanned the card the machine said I hadn't.
"I phoned Camelot and they fobbed me off with some story that -6 is higher - not lower - than -8 but I'm not having it."
-Tina Farrell, a 23 year old thicky from Levenshulme, Manchester.
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Seeing that you have this project in 2008, why not just use LINQ? That way you can sort the same list ascending/descending to your hearts content. As you have a list, you can easily use LINQ for objects on this.
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Whilst LINQ is very cool (I'm using LINQ to SQL in the web service to save on hand coding a DAL), I don't understand enough about how it works yet to get what I want to work to... er... work.
Perhaps I'll try all 3 approaches and write an article.
"On one of my cards it said I had to find temperatures lower than -8. The numbers I uncovered were -6 and -7 so I thought I had won, and so did the woman in the shop. But when she scanned the card the machine said I hadn't.
"I phoned Camelot and they fobbed me off with some story that -6 is higher - not lower - than -8 but I'm not having it."
-Tina Farrell, a 23 year old thicky from Levenshulme, Manchester.
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Well, suppose you have a list called _myList you could use:
var list = _myList.OrderBy(i=>i.ItemName); and to do it descending you could use:
var list = _myList.OrderByDescending(i=>i.ItemName);
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Ok, so that's cool... but suppose I throw into the mix that I want the property name to be specified by which column was clicked... as in, there's a column called "Model_Name" which maps to model.Model_Name, how do I specify i."Model_Name" ?
"On one of my cards it said I had to find temperatures lower than -8. The numbers I uncovered were -6 and -7 so I thought I had won, and so did the woman in the shop. But when she scanned the card the machine said I hadn't.
"I phoned Camelot and they fobbed me off with some story that -6 is higher - not lower - than -8 but I'm not having it."
-Tina Farrell, a 23 year old thicky from Levenshulme, Manchester.
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To do this, you need to build your own expression tree. Here's one I prepared earlier:
ParameterExpression ep = Expression.Parameter(typeof(Customer), "p");
MemberExpression me = Expression.PropertyOrField(ep, "CompanyName");
LambdaExpression le = Expression.Lambda(me, "CompanyName");
Type[] argTypes = { c.ElementType, le.Body.Type };
MethodCallExpression mce = Expression.Call(typeof(Queryable), "OrderBy", argTypes, c.Expression, le);
IQueryable queried = c.Provider.CreateQuery(mce);
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After 3 hours and 11 minutes I think I've finally understood what's going on in your example...
The first thing that threw me was "LambdaExpression le = Expression.Lambda(me, "CompanyName");" as the compiler wanted a parameter expression rather than a string passing in - easily fixed.
The real head scratcher, however, was "c" (as in c.ElementType and c.Provider.CreateQuery(mce)) - what the heck was c? The compiler sure didn't know, and wasn't offering much help either. It occurred to me to wonder what the IQueryable queried was expecting to be filled with, and learned that I needed a set of data, in my case a List of models, AsQueryable. Success!
One question remains which I've not been able to answer...
I take it IQueryable queried actually holds all of the results of the query, however when i try to cast it back to a List < Model >, I end up with an empty list... what am I doing wrong?
"On one of my cards it said I had to find temperatures lower than -8. The numbers I uncovered were -6 and -7 so I thought I had won, and so did the woman in the shop. But when she scanned the card the machine said I hadn't.
"I phoned Camelot and they fobbed me off with some story that -6 is higher - not lower - than -8 but I'm not having it."
-Tina Farrell, a 23 year old thicky from Levenshulme, Manchester.
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Martin, LINQ uses deferred processing, so it's not actually evaluated until you try to do something with it. To this end, you can use
List<Model> model = queryable.ToList<Model>();
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Thanks for that Pete - i think I have a much better (and yet still tenuous) grasp on the whole she-bang now... I shall have to tinker some more!
"On one of my cards it said I had to find temperatures lower than -8. The numbers I uncovered were -6 and -7 so I thought I had won, and so did the woman in the shop. But when she scanned the card the machine said I hadn't.
"I phoned Camelot and they fobbed me off with some story that -6 is higher - not lower - than -8 but I'm not having it."
-Tina Farrell, a 23 year old thicky from Levenshulme, Manchester.
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No bother bonny lad. This[^] is the book I've been using to get my head around LINQ, I can't recommend it highly enough.
modified on Monday, December 17, 2007 4:32:23 PM
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Could someone clear something up for me...
I'm trying to figure out how to work with filepaths on both Linux and Windows.
If I create a string like the one below, it will work on Windows but not on Linux because of the backslashes.
string s = Application.StartupPath + @"\config\settings.txt";
Would I get the correct path on both operating systems if I use this:
string s = Path.GetFullPath(Application.StartupPath + @"\config\settings.txt");
Or do I have to parse the string manually by using "DirectorySeparatorChar"?
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Hi,
I have not done this but I think it is wise to avoid all backslashes, either by
using several Path.DirectorySeparatorChar or several Path.Combine()
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I managed to get OpenSuse up and running with Mono so I could run some tests.
I ran the code below with "test1.txt" in application folder and "test2.txt" in a folder called "folder1" under application folder
char sep = Path.DirectorySeparatorChar;
string path1 = Application.StartupPath + "\\test.txt";
string path2 = Path.GetFullPath(path1);
string path3 = Path.Combine(Application.StartupPath, "test.txt");
string path4 = Application.StartupPath + sep + "folder1" + sep + "test2.txt";
richTextBox1.Text = path1 + Environment.NewLine + path2;
richTextBox1.Text += Environment.NewLine + path3 + Environment.NewLine + path4;
richTextBox1.Text += Environment.NewLine + Environment.NewLine;
StreamReader sr = new StreamReader(path3);
string text = sr.ReadToEnd();
sr.Close();
richTextBox1.Text += text;
sr = new StreamReader(path4);
text = sr.ReadToEnd();
sr.Close();
richTextBox1.Text += Environment.NewLine + text;
On Linux, the result was this:
/home/mono/Desktop/PathTest/PathTest/bin/Debug\test.txt
/home/mono/Desktop/PathTest/PathTest/bin/Debug\test.txt
/home/mono/Desktop/PathTest/PathTest/bin/Debug/test.txt
/home/mono/Desktop/PathTest/PathTest/bin/Debug/folder1/test2.txt
This is the text in test1.text
This is the text in test2.text
And on windows, the result was this:
C:\Documents and Settings\Johan\Desktop\PathTest\PathTest\PathTest\bin\Debug\test.txt
C:\Documents and Settings\Johan\Desktop\PathTest\PathTest\PathTest\bin\Debug\test.txt
C:\Documents and Settings\Johan\Desktop\PathTest\PathTest\PathTest\bin\Debug\test.txt
C:\Documents and Settings\Johan\Desktop\PathTest\PathTest\PathTest\bin\Debug\folder1\test2.txt
This is the text in test1.text
This is the text in test2.text
So the conclusion of this, as you pointed out, using Path.DirectorySeparatorChar or several Path.Combine() is the way to go.
Using Path.GetFullPath did not correct a windows-formated path as I thought.
Thanks for your help.
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How to rotate a text/image automatically from left side to right side in form or vice versa
I use adrotator in case of image, but the image is not rotating .it is fixed in position.
and also in case of label(text).
How can i do this ?
thanks
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anupamwb wrote: I use adrotator in case of image, but the image is not rotating .it is fixed in position.
I don't think that you mean the same thing by "rotating" in this case. When ads are rotated, they are simply show one at a time.
When graphically displaying text or images, rotating means that you rotate the object around a fixed point. You seem to rather be looking for "moving" than "rotating", is that right?
Experience is the sum of all the mistakes you have done.
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Yes,u r right, term should be "moving" .
the text /image should be automatically moving from one side to another side of form when loading.this moving should be continious.
i used adrotator but did not get result.
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