I have a int array with for example {1,2,3,4} value.
I want to put this numbers into, for example, my list box like this :
listBox2.Items.Add("After Inserting (" + page[i].ToString() + ')' + <use all my numbers like this : 1234 here>+"Page Fault = " + pf.ToString());
Output :
After Inserting (3) 1234 page fault = 5
1234 is just an example. My array is much bigger.
How can I do that in c#?
You can use String.Join (actually the IEnumerable<T> overload is taken):
String joined = String.Join("", yourArray);
i'm new in c# how i dont know how place the string among the text
You can use String.Format to build the text and to increase readability:
var inserted = page[i].ToString();
var allInserted = String.Join("", yourArray);
var pageFault = pf.ToString();
var itemText = String.Format("After Inserting ({0}) {1} page fault = {2}"
,inserted, allInserted, pageFault);
listBox2.Items.Add(itemText);
Edit 2:
can i replace some Character instead one number in array? my array : {1,2,3,4,-1"} output : 1,2,3,4,empty
Yes, you can replace the output:
String.Join("", yourArray.Where(i => i != -1));
Edit 3:
i understand how i can exclude -1 but i didn't understand how i can replace something with that...like "empty" instead -1
Here we go ...
String.Join(", ", intArray.Select(i => i == -1 ? "empty" : i.ToString()));
String.Join overload that takes an object[] - saves one explicit step, same .NET version requirement
IEnumerable<T> ;) The general point remains. Maybe someone can enlighten me about the resolution chainIEnumerable<T>(my first approach took IEnumerable<String>).string.Join(", ", intArray.Select(i => i.ToString()))
listBox2.Items.Add("After Inserting (" + page[i].ToString() + ') ' + string.Join(", ", intArray.Select(i => i.ToString())) + " Page Fault = " + pf.ToString());string.Join works also with ToList()
int[] numbers = new int[] {1,2,3,4,5};
string s = string.Join("", numbers.ToList());
Console.WriteLine(s);
output is = "12345"
EDIT: I don't know the name of your array, so I still use the above numbers example
listBox2.Items.Add("After Inserting (" + page[i].ToString() + ") " +
string.Join("", numbers.ToList()) +
" Page Fault = " + pf.ToString());
EDIT:
To exclude numbers like -1 then
int[] numeri = new int[] {1,2,3,4,5,-1};
string s = string.Join(",", numeri.Where(i => i != -1).ToList());
Console.WriteLine(s);
Note, added a comma to separate the numbers
