Re: getting a count of a delimiter in a string - C# Discussion Boards

For_IT25-Sep-06 18:20

25-Sep-06 18:20

Hi everyone, I was asked following question, if anyone knows can u pls tell me

1. The assembly has been updated from version 1.0 to 2.0. The latest assembly 2.0 has some problem, it is required that application should use old assembly. How can we make the application to use old versioned assembly dynamically?

2. while developing a web application what factors should be considered with respect to no of ppl access the same application at a time?

3. When a http request is received by IIS serever, it checks if the page is .aspx and passes to aspnet_is.dll engine. How IIS server detects aspx page? if I have a .html page, and I change the file extension to .aspx, will this page process by IIS server to aspnet_is.dll?

Thanks and regards

Re: dynamically changing assembly

Rob Philpott26-Sep-06 0:33

Rob Philpott

26-Sep-06 0:33

Job interview? Doesn't the fact that you're asking the CodeProject forums give away you might be cheating a bit? Here are my guesses.

1. With enormous difficulty unless there's something I don't know. There's no way to unload an assembly, you have to unload the AppDomain to which it has been loaded, so unless you've really planned for this, you can't unload version 1.0 and load in 2.0. To do that you'd need multiple domains in your app and have a Marshalling nightmare between them all. By design, you could load the assembly in at startup and use reflection to access it, but again you would have had to have planned for this in the design. Anybody know a way of doing this without reflection and I'd be very interested to hear how.

2. Scalability issues. Things like session expiry, caching and the like. Also speed of hardware/farming options etc.

3. IIS knows because you ask for a page with an .aspx extension. In IIS you can tell which ISAPI extensions to use for each file type. If you change an .html page to end with .aspx, then it will get passed to the asp.net ISAPI dll and handled by .net (probably very badly).

Regards,
Rob Philpott.

getting a count of a delimiter in a string

Keshav V. Kamat25-Sep-06 17:27

Keshav V. Kamat

25-Sep-06 17:27

If i have a string that contains certain delimiters, such as a comma(','), then how can I get a count of it.
consider the string as
"one, two, three, four". the number of commas in this example is 3. How can I get it using C#?

Would really appreciate help. Smile | :)

Keshav V. Kamat
Systems Engineer
Siemens
India.

Re: getting a count of a delimiter in a string

Niiiissssshhhhhuuuuu25-Sep-06 17:48

Niiiissssshhhhhuuuuu

25-Sep-06 17:48

Hi,

String s = "one, two, three, four";//your string//
Char[]c=new Char[1];
c[0]=',';//use the seperator you want//
String[] ss = s.Split(c);

int count=ss.length-1;

Cool | :cool:

<marquee>nishu

Re: getting a count of a delimiter in a string

Keshav V. Kamat25-Sep-06 18:21

Keshav V. Kamat

25-Sep-06 18:21

thanks nishu. it works.
But i tried another approach.

int flag2;
L:flag2 = s1.Contains(",");
if (flag2 == true)
{
comma_count++;
j = s1.IndexOf(",");
s = s1.Substring(0, j);

// arr2[req_temp_count] = s;
// req_temp_count++;
s = s1.Remove(0, j + 1);
s1 = s;
goto L;
}

i did this because I wanted to store the substrings in a separate array.

but really thanks. Got another approach. Big Grin | :-D

Keshav V. Kamat
Systems Engineer
Siemens
India.

Re: getting a count of a delimiter in a string

Guffa25-Sep-06 18:41

Guffa

25-Sep-06 18:41

Then use Niiiiiiiisssssshhhhhhuuuuuuus code. It does exactly that, but much more efficiently with much less code.

---
b { font-weight: normal; }

Re: getting a count of a delimiter in a string

lmoelleb25-Sep-06 21:10

lmoelleb

25-Sep-06 21:10

For a short horrible moment I though I saw a goto statement... wait... arghhh... I did see a goto statement! Frown | :(

You MIGHT want to have a look at the "while" keyword Smile | :)

Re: getting a count of a delimiter in a string

LongRange.Shooter26-Sep-06 8:00

LongRange.Shooter

26-Sep-06 8:00

OMG -- this is the worst example of programming I've seen since I taught class.

Keshav V. Kamat wrote:
i did this because I wanted to store the substrings in a separate array.

Your code does no storing of anything in any array whatsoever! And it is quite an expensive set of code. Doing this:

string Val = "a,b,c,ddd,e"
string values[] = Val.Split(',');

...will take your input string, split out the values into an array, remove the comma, and it's length represents the number of comma-delimited words in it. You end up with an array that looks like this:

a
b
c
ddd
e

and the number of values is values.Length which is 5 -- and the number of commas is values.Length - 1 which is 4. Likewise if there are no ',' in the string, then values contains just the first instance of the string with an array length of 1.

a autoscroll question

cchere25-Sep-06 15:20

cchere

25-Sep-06 15:20

If we set a control's autoscroll to be true, it will autoscroll on both x, and y directions. How can I make it only autoscroll in one direction, say up and down?

Thanks

ShortcutBar with TabCtrl functionality?

kozu25-Sep-06 15:18

kozu

25-Sep-06 15:18

Hi,
I'm trying to find a control that will have the functionality of a shortcut bar (like the Toolbox bar in VS.Net - you click on the category "Windows forms" and it slides and shows all the components) but that will allow me to put various controls on it (like the TabCtrl does). Is there something like this already available? Maybe part of a .Net controls library sold by somebody?
Any suggestions?
thanx

Problem with dataGridView_SelectionChanged event in vs2005 .

hdv21225-Sep-06 12:06

hdv212

25-Sep-06 12:06

hi i use access db and vs2005.
my problem is : i want in dataGridView_SelectionChanged event show fields of my database in some controls like textbox . i done this work and i gave good result . but when i delete a record in runtime the following error shown me:
Deleted row information cannot be accessed through the row.
i use datarow for add,update,delete row and use oledbdataadapter and use this
code to access fields of database and show it in some controls :

private void dataGridView1_SelectionChanged(object sender, DataGridViewCellPaintingEventArgs e)
{
if (this.BindingContext[ds_khane1, "Khaneh_1"].Position == -1)
return;
else
{
DataTable dt = ds_khane1.Tables["Khaneh_1"];
DataRow newrow = dt.Rows[dataGridView1.CurrentCell.RowIndex];

txt_name.Text = newrow["name"].ToString();
txt_family.Text = newrow["family"].ToString();
...
}note : i was use dataGridView1_CellPainting event and solved my problem,but why the above error shown me in dataGridView1_SelectionChangedevent and how to solve problem ?
thanks.

DataGrid

btota25-Sep-06 10:33

btota

25-Sep-06 10:33

how make column in datagraid as A comboBox??

fatma

Re: DataGrid

Nader Elshehabi25-Sep-06 11:02

Nader Elshehabi

25-Sep-06 11:02

Hello

One common misunderstanding that occurs here in the form is considering DataGridView and DataGrid as synonyms. They are not the same. Which exactly are you using?
I'll still assume that you use the old DataGrid:
Revise DataGrid.TableStyles property and DataGridColumnStyle class in your MSDN. Though I strongly recommend that you use DataGridView instead.

Regards

System.Diagnostics.Process

DR Delphi25-Sep-06 10:22

DR Delphi

25-Sep-06 10:22

I am trying to launch the winzip.exe application from within my application and when I use the System.Diagnostics.Process method It errors out.. can someone please provide me with a simple shell of code that would accept the winzip.exe application name and file path, src file and dest file and a waitPeriod param. I really need this
I am using C# 2005 studio express.

Thanks

mrcaston@webcust.com or
marselle.r.caston@jpmchase.com

MRC

Re: System.Diagnostics.Process

Nader Elshehabi25-Sep-06 10:49

Nader Elshehabi

25-Sep-06 10:49

Hello

I suppose you write it like this:

Process.Start(@"C:\Program Files\Winzip\Winzip.exe %1 MyFile.zip");

or something similar? Instead, only write the zip file name:

Process.Start("MyFile.zip");

and the windows explorer will launch the default program associated with that file type -usually will be Winzip-.

Regards

Re: System.Diagnostics.Process [modified]

Niiiissssshhhhhuuuuu25-Sep-06 17:35

Niiiissssshhhhhuuuuu

25-Sep-06 17:35

Hi
Use this one.

process1.StartInfo.FileName="C:\\Program Files\\Winzip\\Winzip.exe";
process1.StartInfo.Arguments="Myfile.zip";
process1.Start();

enjoy!!!

Cool | :cool:

<marquee>nishu

Change RowColor in datagridview

ezazazel25-Sep-06 8:43

ezazazel

25-Sep-06 8:43

How to change the color of the complete row in my datagridview?

1. read the information from a file //DONE!
2. fill the cells with information //DONE!
3. add the cells to the row //DONE!
4. add the row to the datagridview //DONE!
5. display the datagridview //DONE!!

This is what should be done:

if the cell[0] Value == "FALSE"
set the row backgroundcolor to red

think this has to be done between step 3 and 4.
Would appreciate every hint.

Thx,
Ezazazel

Re: Change RowColor in datagridview

Nader Elshehabi25-Sep-06 10:46

Nader Elshehabi

25-Sep-06 10:46