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Since the nesting depth is potentially limited only by available memory, and the sequence of tag types, if used this way, would have to be known at declaration time of the outermost foo, this approach seems not suitable yet.
For the purpose of nesting Foo's: It's an attempt to merge method return value and possible error handling without the performance impact of exception handling in case of an error.
And I personally don't like out-parameters too much.
Ciao,
luker
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Even if technically possible, what's the logical need of accomplishing it?
Generics do allow specific types to be used, but this need is more like having a tree with each branch capable of bearing a different fruit 
Code can solve a problem identified; but first identify the problem itself
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As I said in the post you repied to, it's to combine result value and error handling.
The tree you mention is a good analogy to what I'm trying to create: there is a task to do with several sub-tasks which themselves have sub-sub-tasks. Each of those could fail and therefore return an error. Each could as well return some result just as expected.
The tree structure is built of error messages, including "There was no error. Everything went fine". Besides the error, especially in those "Everything fine" cases, there shall return a result value. It is of type object at the moment. I would like to have it type-safe. Therefore the need to tell the error object what type the nested return value should have.
Ciao,
luker
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Hello,
I am writing simple server(publisher) and client(subscriber) application to imagine interprocess communication between two managed C# processes.
I need to write server(that's working as a publisher), it is publishing the contents to the subscriber on the basis of its subscriptions and client(subscriber). For this I have to write 2 seperate configuration files (app.config) on both publisher and subscriber's end. It's creating a problem. Publisher when want's to publish the data, it starts the process(client which's working as subscriber) with Process.Start statement. On start client process unable to initialize remoting, because it loads config.app which 's being used on server side. Where it did'nt find its own configurations(subscriber's configuration's).
I need to write both subscriber and publisher configuration on a single app.config file.How?
Regards,
Usman
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The way I approached this was to create an assembly that managed access to a specific settings file, and referenced that assembly in all of the necessary applications. I posted an article that uses this technique here:
Synchronicity - A Folder Synchronizing Application[^]
The files you want to look at are:
AppSettingsBase.cs in the AppSettingsLib project
and
SyncSettings.cs in the SynchroLib project
".45 ACP - because shooting twice is just silly" - JSOP, 2010
-----
You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
-----
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass." - Dale Earnhardt, 1997
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I digged out further and imagined that the problem i described, it will no longer be the issue at all. Can you please answer or help out the problem that I described. Because the problem now directed as this.
"How can Remoting Obj Uri be gernated at runtime at subscriber's end?"
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Hello,
I have to work on one application that uses WCF web service. I know how to consume ASP.Net web service. May I know how consuming WCF web service different than ASP.Net service. Please, I want details for client only. Is it make any difference for proxy class.
Thanks in advance.
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It is more or less similar if you are just calling the service operation without playing around with the requests or something else. Instead of adding web reference, add service reference. Or use svcutil to create the proxy class.
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I have a function that loads data and configures the datagrid. I did this so that all the datagrids in the project would be the same. So I added a bit of code that is supposed to add row numbers to each of the datagrids.
<pre>
int numberofrows = DG.Rows.Count;
int len = numberofrows.ToString().Length;
string NumberForRow;
for (x = 0; x < DG.Rows.Count; x++)
{
NumberForRow = Convert.ToString(x + 1);
while (NumberForRow.Length < len)
{
NumberForRow = "0" + NumberForRow;
}
DG.Rows[x].HeaderCell.Value = NumberForRow;
}
</pre>
This code is fired as so
GF.LoadDataGrid(dgInvoices, DT, true,"InvoiceID,OrderID,Status,Date", "EVEN", "");
Where GF is GeneralFunctions class and LoadDataGrid is a method, the paramaters are dgInvoice is the DataGridView to load, DT is the DataTable, true/false is readonly, The first string is the Column headers, the second string is column spacing and the last string is columns that need to hidden if any. No the weird part. This line of code does not put in the Rowheader numbers. The DataGridView dgInvoices has an event tied to it that fills in another datagrid view with the detail of the invoice the call to fill that DataGridView is exactly the same
GF.LoadDataGrid(dgInvoiceDetail,DT,true,"ItemID,Description,Qty,Amount","EVEN","");
and for that datagrid the number do appear. I know that there is no difference between the two datagrids as on the form, I have copied and pasted the first datagrid to make the second datagrid so they are the same. Not sure what is going on.
Any help would be appreicated.
Thank you.
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Member 2256533 wrote: int numberofrows = DG.Rows.Count;
int len = numberofrows.ToString().Length;
string NumberForRow;
for (x = 0; x < DG.Rows.Count; x++)
{
NumberForRow = Convert.ToString(x + 1);
while (NumberForRow.Length < len)
{
NumberForRow = "0" + NumberForRow;
}
DG.Rows[x].HeaderCell.Value = NumberForRow;
What length are you trying to get? this does not seem right. It looks you are trying to figure out how may digits are in a number. Is that right?
int len = numberofrows.ToString().Length;
int NumberForRow = 1;
foreach (DataGridViewRow row in DG.Rows)
{
if(NumberForRow < 10)
row.HeaderCell.Value = String.Format("{0:D2}", NumberForRow );
else
row.HeaderCell.Value = NumberForRow;
NumberForRow = NumberForRow+ 1;
}
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True I am trying to find out how many digits are in the number so I can make the row headers all the same length. So if there are 1-9 rows the headers would look like 1,2,3,etc... and when there are 10-99 rows then 01,02...99, and 100-999 then 001,002,003...999 and this part works fine. The problem is that the row numbers don't show up at all in the first datagrid and they show up just fine in the second datagrid, using the exact same code.
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For positive numbers this will do:
row.HeaderCell.Value = NumberForRow.ToString().PadLeft(requiredWidth, '0');
Luc Pattyn [Forum Guidelines] [My Articles] Nil Volentibus Arduum
Please use <PRE> tags for code snippets, they preserve indentation, improve readability, and make me actually look at the code.
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An update to the problem. I took the code above and made a separte function out of it. Then Added the call to it after the GF.LoadDataGrid call with the same result. No numbers. Then I added a button to the form that called the same function. After the page was rendered and I clicked said button and the numbers appeared. So it seems that for some reason after the numbers are put there and the grid is rendered the row numbers disappear. Not sure why?
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Something like this won't do? (The DataGRidView has an unbound column added at column 0 for the index)
private void dataGridView1_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
{
foreach (DataGridViewRow R in dataGridView1.Rows)
{
R.Cells[0].Value = R.Index;
}
}
EDIT: Oops. Never mind. Just noticed you want to put it in the row header cell....which doesn't work in the above code.
..and water fell from the sky like rain.
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Daniel Soper appears to have a nice solution which he describes here
"You get that on the big jobs."
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Hey ,
I have this task but I don't know what I should do , Please help me.
task :
-------------
An integer that is greater than zero is said to be n-factored if it has n distinct factors other than 1 and itself. For example 12 is 4-factored because its factors are 2, 3, 4, 6. A prime number is 0-factored.
Write a function named isNFactored that takes two arguments, an integer and some value of n, and returns 1 if the integer is n-factored. The function signature is
int isNFactored(int value, int n)
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if value n return reason
14 2 1 14 has two factors, 2 and 7
18 5 0 18 does not have 5 factors, it only has four (2, 3, 6 and 9)
25 2 0 25 = 5*5 but we are only interested in distinct factors so the 5 is only counted once.
36 7 1 36 has seven factors (2, 3, 4, 6, 9, 12, 18). Note that 6 is counted only once.
7 0 1 all prime numbers are 0-factored
-5 anything 0 the value must be greated than 0
and I do code know but I doesn't know what is meant by return type?
public static int GetFactorCount(int numberToCheck, int n)
{
int factorCount = 0;
int sqrt = n;
for (int i = 1; i < sqrt; i++)
{
if (numberToCheck % i == 0)
{
factorCount += 2;
}
}
if (sqrt * sqrt == numberToCheck)
{
factorCount++;
}
return factorCount;
}
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It is really easy to count the number of prime factors of a number. I will not give you the implementation, but can help you with the algorithm.
1. Define a factorCount variable and initialize it to 0.
2. Define a factor variable and initialize it to 2.
3. If factor is equal or bigger than the number to check, goto step 6, else, continue by step 4.
4. If factor divides the number to check:
4.1 Increase factorCount by 1.
4.2 Divide the number to check by factor.
4.3 Go to step 4.
5. Increase factor by 1.
5. Go to step 3.
6. Return factorCount.
That is all.
modified on Tuesday, February 8, 2011 9:44 AM
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You probably need to start by researching any algorithms that solve the mathematics of this question. Once you know that solution it should be a simple matter to convert it into the programming language of your choice.
Is this really a .NET question?
I must get a clever new signature for 2011.
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Richard MacCutchan wrote: Is this really a .NET question?
Technically, no...
".45 ACP - because shooting twice is just silly" - JSOP, 2010
-----
You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
-----
"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass." - Dale Earnhardt, 1997
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Try something and post the code here (if you face any issues).
Someone will try and help you.
The funniest thing about this particular signature is that by the time you realise it doesn't say anything it's too late to stop reading it.
My latest tip/trick
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Since the function signature is quite misleading from a C# point of view, let me give you some hints:
the return value is actually a boolean: "returns 1 if the integer is n-factored", and implicitly 0 otherwise - that's a stone-age coding praxis typical of C or COM. Now you can start to interpret the parameters: "value" should be the integer number for which to find the number of factors, and "n" the number of factors. I.e. if "value" has "n" factors return 1, otherwise 0.
Now take the code you've posted, and make little changes: calculate "sqrt", then compare "factorcount" and "n" for getting the return value.
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I have a CustomerInfo form which is an Mdi form to the main form. The CustomerInfo form a has TabControl with 4 TabPages on it.
From the Main form
CustomerInfo CI = new CustomerInfo();
In the form constructor event i have the following pseudeocode
LoadGeneralTab()
LoadOrderTab()
LoadInvoiceTab()
LoadPayHistoryTab()
Each of these functions loads several Datagrids with information.
Then from the main form
CI.MdiParent = this;
CI.Show();
The CustomerInfo form shows up as expected and all is good. But when I click on the orderTab or invoiceTab or the payHistoryTab it takes a long time to switch over to it. And the speed of the switch seems to be the amount of information contained in the datagrid views. What I don't understand is why this is happening as it seems to me that all the grids have been populated with information in the constructor so what is taking so long to switch over. I have done this before and not had the same problem. And help would be appreciated.
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Member 2256533 wrote: And the speed of the switch seems to be the amount of information contained in the datagrid views
Doesn't that answer your question. That implies you need to look closer to how the data is retrieved. May be you need to optimize your query. It is kinda hard to tell without looking at the code.
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No not really, It does take some time for the CustomerInfo form to show up, and I assume that is because it does take time to load all the information on each of the tabs. But once the CustomerInfo form is displayed all the information should be loaded. So switching between tab pages should be quick. But it seems that the tabs are being reloaded everytime I switch over to them.
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