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My question is why are you even trying to assign an integer to an enum?
Whatever it is be aware of the very useful Enum.Parse For instance, in the case of persisting to fule it might be better to use the enum's name incase the enum's underlyng value was ever changed.
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I need to create an object that takes its values from a database. The value of the enum is stored as an int, and I need to convert it back to the enum as I build the object.
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Daniel Turini wrote:
What if numericThing has a value that is an invalid Thing? You should validate it before assigning.
Or let it be an undefined value 
top secret xacc-ide 0.0.1
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hi,
i got error when compile the code that implement generic in C#
like this : public class Stack<T>
i read msdn that C# support generic
but why i get compile error
how to solve this?
Thanks
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C# doesn't support Generic, at least not yet. This feature will be included in the upoming C# 2.0 standard.
Take a look at this article from MSDN magazine for some more information about C# 2.0.
www.troschuetz.de
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just realize it is for C# 2.0
thanks Stefan
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Hi
I have a question, that how i can convert value of textbox(string) to integer in C# ?
i will be happy if you help me!
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Convert.ToInt32(this.textBox1.Text);
i would explain a bit more but my wrist is broken.
/\ |_ E X E GG
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Hi
It's better you learn the 'Parse' way:
int Number = Int32.Parse(textbox1.text)
Why? You can use to various types. e.g:
double Number = double.Parse(textbox1.text)
DateTime ADate = DateTime.Parse(textbox1.text)
Regards
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I need same thing in Windows Forms programming as with ASP.NET Label (on Web it is much easier because Text property is just droped into html source). So is there something similar already around or should I think my own way to do this... ?
Any suggestions are also welcome... 
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And the string value for the Label.Text property in Windows Forms is dropped into the source code as well. Expand the "Windows Form Designer generated code" region and you'll see it. And if something doesn't appear in source code (like images in an ImageList or for any BackgroundImage properties, etc.), then it's most likely serialized to a ResX file. There's actually no hidden code like there was when designing forms in Visual Basic 6 and older.
But what does this have to do with "multi-styled lable" as you mentioned in your subject?
Microsoft MVP, Visual C#
My Articles
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You didn't understood my question ...
ASP.NET Label.Text = "[b]Boldpart[/b]la[i]italic[/i]" gives (of course I know that it is < instead of [):
Boldpartlaitalic
Same manipulation can be done with fore color with is basicly what I need.
Now I was just wondering if there is a way to do that with "Windows Forms Label"... for example, \n will gives new line \t tab... is there something like that for color and bold/italic or should I go with developing my own Label that will have this?
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pekica wrote:
You didn't understood my question
Actually, you really didn't explained what you want (which I mentioned in my first reply).
No, there is no style formatting specificiers and the Label wouldn't support them even if there was. It's a simple Static common control. Even extending it won't do much good because of that fact (it's limited to what the Static common control can do). You could always owner-draw your Label derivative, but that could be difficult.
Instead, you might consider just using a read-only, borderless RichTextBox. While RTF formatting isn't quite as simple as HTML formatting elements, it's not very hard and - if you wanted - you could always extend it to accept HTML format elements and transform them to RTF. Use the RichTextBox.Rtf property, though, not RichTextBox.Text.
Microsoft MVP, Visual C#
My Articles
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Heath Stewart wrote:
pekica wrote:
You didn't understood my question
Actually, you really didn't explained what you want (which I mentioned in my first reply).
Don't get to hard on me
In any case thanks again, you were helpful as always...
c-ya
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I am involved in a project in which I should send bunch of requests(say around 50) to the server all of which are sent to the same domain. So, it's actually much faster to do this job through multi-threading, that is, I give the responsibility of requesting each URL to one separate thread. Requesting all the URLs in a single thread is actually done with no problem, But in multithreaded approach, I encountered some strange exception thrown while creating a WebRequest thru line below:
_URLReq = (HttpWebRequest)WebRequest.Create(_url);
_URLRes = (HttpWebResponse)_URLReq.GetResponse();
this is the exception that I receive:
The remote server returned an error: (403) Forbiddern.
There is no shared resource there, the only thing shared is Create method of WebRequest class which is a static method claimed to be thread safe. I speculated that it's the problem of that method, so I locked it:
lock(typeof(WebRequest))
{
_URLReq = (HttpWebRequest)WebRequest.Create(_url);
}
but it again didn't work. I locked the next line too:
lock(typeof(WebRequest))
{
_URLReq = (HttpWebRequest)WebRequest.Create(_url);
_URLRes = (HttpWebResponse)_URLReq.GetResponse();
}
And that exception never got thrown, the problem was solved. So, what should I say? It really doesn't appear to be thread safe. Any idea? 
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The WebRequest.Create method is thread-safe because it's static. Statics are always thread-safe within an application domain (which goes without saying since threads exist in but one application domain).
The problem is with WebRequest.GetResponse. This should also be obvious since synchronizing the call eliminated the problem.
Since HTTP error code 403 actually describes many different errors, the most likely problem is that too many requests were made on the server and error code 403;9 (Too many users) was returned. You should trace the HttpWebResponse.StatusDescription in addition to the HttpWebResponse.StatusCode.
Microsoft MVP, Visual C#
My Articles
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Your answers are always excellent Heath, thank you ![Rose | [Rose]](https://codeproject.freetls.fastly.net/script/Forums/Images/rose.gif)
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Is it possible to use a vertical font in the header of a data grid? When the column titles ae longer than the contents of the cells, it seems such a waste of screen space to have wide columns (and not user-friendly to hide most of the titles by having narrow columns).
Any ideas welcome!
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The DataGrid does not allow you to draw the column headers. I would recommend a third-party control like XtraGrid from Developer Express[^] if you require such functionality. Many third-party controls like those from Developer Express are cheap and most often royalty free.
Microsoft MVP, Visual C#
My Articles
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Hi,
Does anyone know how to develop a toolbar that doesn't steal focus from the foreground window?
For example:
In Visual Studio .NET, undock a tool window and then click on one of the buttons on the main window toolbar. Notice the tool window continues to have focus.
I want to do the same thing as Visual Studio. Currently I am using the Windows API ToolbarWindow32 class and the rebar control.
Cheers
David
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hi
does any one know how can i convert this code that is made by C++ in dll to C# also to be put in dll
<br />
#define DllExport __declspec( dllexport )<br />
HHOOK h;<br />
DllExport extern LRESULT CALLBACK CallWndProc(int nCode,WPARAM wParam,LPARAM lParam)<br />
{<br />
<br />
switch(nCode)<br />
{<br />
case WM_SIZING:<br />
return 0;<br />
break;<br />
<br />
case WM_MOVING:<br />
return 0;<br />
break;<br />
<br />
default:<br />
return CallNextHookEx(h,nCode,wParam,lParam);<br />
}<br />
}<br />
DllExport extern void InstallHook()<br />
{<br />
h=SetWindowsHookEx(WH_CALLWNDPROC,CallWndProc,0,0);<br />
}<br />
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There's three types of ways to handle Windows messages in .NET:- Override the
WndProc method of a control (including Form, which derives from Control). The Message structure contains the necessary information. You can use the Marshal class and the GCHandle structure to assist with marshaling the WPARAM and LPARAM. This is a Window hook. - Implement
IMessageFilter and add it to the collection of message pump filters using Application.AddMessageFilter. This is an application hook. - Finally - and you should be very careful and write good, efficient, error-checking code - are global system hooks like
WH_CALLWNDPROC. See the article Global System Hooks in .NET[^] for more information
Decide whether you really need a global hook that applies to all Windows though. Using any language, this can decrease the performance and stability of Windows, but using a managed language will definitely decrease performance because of the runtime. In most cases, this is not necessary.
Just today I recommended handling these very notification messages by simply overriding WndProc on a form to prevent it from being moved or resized. This would be the most efficient way and would not affect other applications.
Microsoft MVP, Visual C#
My Articles
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Hi guys
Now a days I am working with assemblies in .NET using C# and there is a problem
I want to get access specifier ie whether the field, method etc is public , private or protected, and the comments about that method or field using Reflection Namespace just like it is done in object browser of Visual studio.NET.
How to do that
Thanks
zaeny
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Read the documentation for the classes in System.Reflection, and the topic Discovering Type Information at Run Time[^].
This forum isn't the place for article-length discussions. You can learn what you need to know from the information above, and you can additionally search CodeProject for many samples, but it really isn't that hard. At least reading that link will give you a good idea of where to start, but reading more about the classes in the System.Reflection will teach you more.
Microsoft MVP, Visual C#
My Articles
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