|
Hi,
I am a beginner level programmer and I would be happy
if somebody can clarify me this small doubt.
I want to know,if using 'this' to refer to the local variables inside a class is a good practice. using 'this' would be a bit costly or it would infact aid performance ?
Please clarify this , would be more thankful if you can give me some links for improving code performance.
Thanks a ton.
|
|
|
|
|
manivannan.p wrote:
I want to know,if using 'this' to refer to the local variables inside a class is a good practice. using 'this' would be a bit costly or it would infact aid performance ?
A local variable is one which is within the scope of the method or property, not the class. I think what you mean is member variable (aka field in .NET)
Using the this keyword is just making explicit what the compiler will do implicitly anyway. There is no perfomance advantage to using it or not as the resulting code will be compiled to be the same anyway.
The only time where it does make a difference is where you have a local variable and a member variable with the same name. You must use the this keyword to refer to the member variable in that instance otherwise the compiler will assume you are referring to the local variable.
Does this help?
My: Blog | Photos
WDevs.com - Open Source Code Hosting, Blogs, FTP, Mail and More
|
|
|
|
|
|
 Hi All
Export to excel data from ultrawebgrid rows, Each data row contain one worksheet in excel sheet like as
row1 data contain sheet1
row2 data contain sheet2
row3 data contain sheet3
this opertaion getting at a time on pressing one button.
we have pressing one button ultrawebgrid rows data to export excel sheet, In excel sheet each worksheet contain one grid row deatails, for example grid have 10 rows ,pressing any button, In excel sheet 10 worksheets will occure and each worksheet contain 1 row data of grid pls send me a solution for this example
sunny
|
|
|
|
|
hi,
I have a dataset and I have three txtbox feilds and two buttons(backword and forward)in the form I am trying to display the data row by row.
I am using the bindingContext property of the form to move forward and backword in the form so in the click event handler of the buttons I am just incrementing and decrementing the position property. I have binded the txt boxes to the respective feilds in the Emp table in the dataset using the visual studio.net IDE .
I wrote the event handler OnpositionChanged to take care of the bonds of the rows.
But when I run the code I only the first data is displayed in the corresponding controls but how do I write code to traverse to the next record.Can any one help me in this.
If any one has any link that shows the step by step procedure for this i would be really great full to them.
Thanks in advance.
satish
|
|
|
|
|
can anyone help me in finding the dll version of a dll file using C#?
|
|
|
|
|
|
I need to find the version of a dll & that dll is stored in my c drive.THat dll is not a dynamic neither .NET application's dll
can u plz help me out plz
|
|
|
|
|
Do you know any commercial application written in .NET?
|
|
|
|
|
Aren't parts of the VS.NET IDE written in .NET ? I'm sure some add ins are.
Christian Graus - Microsoft MVP - C++
|
|
|
|
|
Yes, some parts of it (the Designers I think) ae written in .NET
There is also (though it's not a commercial app) the free ASP.NET Web Matrix app.
Appart from those two.. I can't think of any other app.
|
|
|
|
|
I guess the other question is, what proportion of programs written for a specific customer ( and web apps in particular ) is now written using .NET ? There are still huge websites using ASP or PHP. because they always have. Office doesn't even use MFC, for the same reason - it existed before MFC, and keeps getting built on the same code base.
Christian Graus - Microsoft MVP - C++
|
|
|
|
|
Same for newest SQL Server... IIRC.
David
|
|
|
|
|
deckards29 wrote:
Do you know any commercial application written in .NET?
Well, I've written several for my clients. I'm currently working on a complex client/server application written in C# and using declarative programming techniques.
Marc
My website
Latest Articles:
Undo/Redo Buffer
Memento Design Pattern
|
|
|
|
|
Texas Medicaid is technically a government agency, but like many large government agencies, their IT is contracted to a commercial company.
They have online eligibility verification as well as claims submission and processing both of which are by any standard commercial applications, and the platform is ASP.NET. They also have a desktop edition that allows healthcare providers to access the same system using a Windows interface instead of a browser, and this is a NET application as well.
They may not be as big as e-Bay, who is? But Texas is in the top 4 in terms of state Medicaid programs, up there with CA, NY,and FLA. I work with a pediatrics clinic in Austin, which is what I would consider a modest size city, actually small by my standards (Atlanta) or compared to Dallas. We see 150 kids a day and submit well over a 1000 transactions to their site daily. So for the entire state of Texas, it is a pretty large system, definitely.
I have no idea how many servers they run, but if your question is "Can NET really be used to develop large stable applications" I would have to say yes. Texas Medicaid site availablity is for all practical purposes 100% and in terms of server operation errors, I would decribe them as negligible.
Robert
|
|
|
|
|
Do you mean by commercial targeted to public purposes ?
Kareem Shaker
|
|
|
|
|
|
check that http://www.searchbug.com and http://www.axmo.com
Kareem Shaker
|
|
|
|
|
check that Meta Search engine http://www.searchbug.com and http://www.axmo.com
Kareem Shaker
|
|
|
|
|
I've managed to install and successfully run web services that call numerous components in the Microsoft.Practices.EnterpriseLibrary on my local development box (XP PRO) calling a local instance of sql server.
My production server does not have Visual Studio installed so when I install the Enterprise Library, the code does not compile. So I just copied the compiled modules from my local box to the server.
As a final step, I ran the "Install Services" batch file after all the above and it ran just fine.
However, when I make a call on the production server to the db server (same box), my service complains with 'The Type initializer for "Microsoft.Practices.EnterpriseLibrary.Data.Instrumentation.DataCommandFailedEvent" threw an exception'
Of course this doesnt happen when I run the same code locally.
Any help on this issue would be greatly appreciated.
Rob
|
|
|
|
|
Hi friends,
I have 2 problem regarding Smart phone Windows Application:
1.I want to use multiple Emulators.How to create instance for Emulator.
2.I am adding Webreference for Webservice in my Windows Smart Phone Application.While i am Debugging that Application it works properly.
If i am change to release mode and build that Application,At that time also its not say any compiler error.But if i am go to Projectfolderpath/Bin/Release
and run that project exe,it says the error that method written in Webservice not reflected.It occurs in form where instance for Webservice is created.
Please give the solution.
Regards.,
|
|
|
|
|
I am trying to create a launcher form where I create dynamically several buttons, each of which holds in the Tag attribute,
the name of a form class (i.e. Form1, Form2,....)
After I have the buttons created and also a handler for each button wired to the buttons click event, I want to call the corresponding form and open it. I have a sub called "ActivateFormOnTheFly" from wich I can open those forms.
The problem I found is that I can't come with the right code to open the forms using the button's Tag attribute
The name of the form is available in sender.Tag() of "ActivateFormOnTheFly"
What snippet of code should I write there?
Thans in advance
Private Sub Check4Forms()<br />
<br />
Dim myFiles() As String<br />
myFiles = Directory.GetFiles(Application.StartupPath & "\...\")<br />
<br />
Dim FilePath, FileName, FileExt, File As String<br />
Dim myPath(), myFile() As String<br />
<br />
For Each FilePath In myFiles<br />
<br />
myPath = FilePath.Split("\")<br />
FileName = myPath(myPath.GetUpperBound(0))<br />
myFile = FileName.Split(".")<br />
FileExt = myFile(myFile.GetUpperBound(0))<br />
File = myFile(myFile.GetLowerBound(0))<br />
<br />
Dim FButton As New System.Windows.Forms.Button<br />
<br />
If File.StartsWith("F") And FileExt = "vb" Then<br />
<br />
FButton.Text = File<br />
FButton.Tag = File<br />
Me.Panel1.Controls.Add(FButton)<br />
FButton.Dock = DockStyle.Top<br />
<br />
AddHandler FButton.Click, New System.EventHandler(AddressOf Me.ActivateFormOnTheFly)<br />
<br />
End If<br />
<br />
Next<br />
<br />
End Sub<br />
<br />
Public Sub ActivateFormOnTheFly(ByVal sender As Object, ByVal e As EventArgs)<br />
<br />
End Sub
|
|
|
|
|
So you have the name of the class as a string and want to instantiate and invoke methods? Use reflection. Like
Form f = (Form) Activator.CreateInstance(Type.GetType("your_string_here"));
f.ShowDialog();
Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro
|
|
|
|
|
I using vb.net and load the crystal report by using crystalReportViewer.
And when i press the button print which at crystalReportViewer's toolbar.
It will show a print diaolog to me.
Now i want set the printer name "Epson LQ 2180 " as default printer name in that print dialog which belong to crystalReportViewer's toolbar.Before that the printer name as default is "Laser Jet HP 100" which are the default printer in my network.
report.Load("D:Ticket Selection\E-FG Export.rpt")
CrystalReportViewer1.ReportSource = report
CrystalReportViewer1.PrintReport()'This function will show me the print dialog
So i would like to ask....
How to write the coding behind to set the printer name as i want be default in Print dialog?
Cheer Up (^_^)
|
|
|
|
|
How can I insert differently colored strings into ListView control or other (I need so table). Is it possible? I'm programming in Visual Basic.NET. Thanks!!!
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
