I have a string of type
ishan,training
I want to split the string after "," i.e i want the output as
training
NOTE: "," does not have a fixed index as the string value before "," is different at different times.
e.g ishant,marcela OR ishu,ponda OR amnarayan,mapusa etc...
From all the above strings i just need the part after ","
You can use String.Split:
string[] tokens = str.Split(',');
string last = tokens[tokens.Length - 1]
Or, a little simpler:
string last = str.Substring(str.LastIndexOf(',') + 1);
var arr = string.Split(",");
var result = arr[arr.length-1];
sourcestring.Substring(sourcestring.IndexOf(',')). You might want to check sourcestring.IndexOf(',') for -1 for strings without ,.
I know this question has already been answered, but you can use linq:
string str = "1,2,3,4,5";
str.Split(',').LastOrDefault();
Although there are several comments mentioning the issue of multiple commas being found, there doesn't seem to be any mention of the solution for that:
string input = "1,2,3,4,5";
if (input.IndexOf(',') > 0)
{
string afterFirstComma = input.Split(new char[] { ',' }, 2)[1];
}
This will make afterFirstComma equal to "2,3,4,5"
Use String.Split(",") assign the result in to a string array and use what you want.
Heres a VB version. I'm sure its easy to translate to C# though
Dim str as string = "ishan,training"
str = str.split(",")(1)
return str
Related
I wonder if it's possible to use split to divide a string with several parts that are separated with a comma, like this:
10,12-JUL-16,11,0
I just want the Second part, the 12-JUL-16 of string and not the rest?
Yes:
var result = str.Split(',')[1];
OR:
var result = str.Split(',').Skip(1).FirstOrDefault();
OR (Better performance - takes only first three portions of the split):
var result = str.Split(new []{ ',' }, 3).Skip(1).FirstOrDefault();
Use LINQ's Skip() and First() or FirstOrDefault() if you are not sure there is a second item:
string s = "10,12-JUL-16,11,0";
string second = s.Split(',').Skip(1).First();
Or if you are absolutely sure there is a second item, you could use the array accessor:
string second = s.Split(',')[1];
Yes, you can:
string[] parts = str.Split(',');
Then your second part is in parts[1].
or:
string secondPart = str.Split(',')[1];
or with Linq:
string secondPart = str.Split(',').Skip(1).FirstOrDefault();
if (secondPart != null)
{
...
}
else
{
...
}
Also you can use not only one symbol for string splitting, i.e.:
string secondPart = str.Split(new[] {',', '.', ';'})[1];
You could use String.Split, it has an overloaded method which accepts max no of splits.
var input = "10,12-JUL-16,11,0"; // input string.
input.Split(new char[]{','},3)[1]
Check the Demo
Here's a way though the rest have already mentioned it.
string input = "10,12-JUL-16,11,0";
string[] parts = input.Split(',');
Console.WriteLine(parts[1]);
Output:
12-JUL-16
Demo
lets say I have string in format as below:
[val1].[val2].[val3] ...
What is the best way to get the value from the last bracket set [valx] ?
so for given example
[val1].[val2].[val3]
the result would be val3
You have to define best first, best in terms of readability or cpu-cycles?
I assume this is efficient and readable enough:
string values = "[val1].[val2].[val3]";
string lastValue = values.Split('.').Last().Trim('[',']');
or with Substring which can be more efficient, but it's not as safe since you have to handle the case that's there no dot at all.
lastValue = values.Substring(values.LastIndexOf('.') + 1).Trim('[',']');
So you need to check this first:
int indexOflastDot = values.LastIndexOf('.');
if(indexOflastDot >= 0)
{
lastValue = values.Substring(indexOflastDot + 1).Trim('[',']');
}
For a quick solution to your problem (so not structural),
I'd say:
var startIndex = input.LastIndexOf(".["); // getting the last
then using the Substring method
var value = input.Substring(startIndex + 2, input.Length - (startIndex - 2)); // 2 comes from the length of ".[".
then removing the "]" with TrimEnd function
var value = value.TrimEnd(']');
But this is by all means not the only solution, and not structural to apply.. Just one of many answers to your problem.
I think you want to access the valx.
The easiest solution that comes in my mind is this one:
public void Test()
{
var splitted = "[val1].[val2].[val3]".Split('.');
var val3 = splitted[2];
}
You can use following:
string[] myStrings = ("[val1].[val2].[val3]").Split('.');
Now you can access via index. For last you can use myStrings[myStrings.length - 1]
Providing, that none of val1...valN contains '.', '[' or ']' you can use a simple Linq code:
String str = #"[val1].[val2].[val3]";
String[] vals = str.Split('.').Select((x) => x.TrimStart('[').TrimEnd(']')).ToArray();
Or if all you want is the last value:
String str = #"[val1].[val2].[val3]";
String last = str.Split('.').Last().TrimStart('[').TrimEnd(']');
I'm assuming you always need the last brace. I would do it like this:
string input = "[val1].[val2].[val3]";
string[] splittedInput = input.split('.');
string lastBraceSet = splittedInput[splittedInput.length-1];
string result = lastBraceSet.Substring(1, lastBraceSet.Length - 2);
string str = "[val1].[val2].[val3]";
string last = str.Split('.').LastOrDefault();
string result = last.Replace("[", "").Replace("]", "");
string input="[val1].[val2].[val3]";
int startpoint=input.LastIndexOf("[")+1;
string result=input.Substring(startpoint,input.Length-startpoint-1);
I'd use the below regex. One warning is that it won't work if there are unbalanced square brackets after the last pair of brackets. Most of the answers given suffer from that though.
string s = "[val1].[val2].[val3]"
string pattern = #"(?<=\[)[^\]]+(?=\][^\[\]]*$)"
Match m = Regex.Match(s, pattern)
string result;
if (m.Success)
{
result = m.Value;
}
I would use regular expression, as they are the most clear from intention point of view:
string input = "[val1].[val2].[val3] ...";
string match = Regex.Matches(input, #"\[val\d+\]")
.Cast<Match>()
.Select(m => m.Value)
.Last();
I have a string in a masked TextBox that looks like this:
123.456.789.abc.def.ghi
"---.---.---.---.---.---" (masked TextBox format when empty, cannot use underscore X( )
Please ignore the value of the characters (they can be duplicated, and not unique as above). How can I pick out part of the string, say "789"? String.Remove() does not work, as it removes everything after the index.
You could use Split in order to separate your values if the . is always contained in your string.
string input = "123.456.789.abc.def";
string[] mySplitString = input.Split('.');
for (int i = 0; i < mySplitString.Length; i++)
{
// Do you search part here
}
Do you mean you want to obtain that part of the string? If so, you could use string.Split
string s = "123.456.789.abc.def.ghi";
var splitString = s.Split('.');
// splitString[2] will return "789"
You could simply use String.Split (if the string is actually what you have shown)
string str = "123.456.789.abc.def.ghi";
string[] parts = str.Split('.');
string third = parts.ElementAtOrDefault(2); // zero based index
if(third != null)
Console.Write(third);
I've just used Enumerable.ElementAtOrDefault because it returns null instead of an exception if there's no such index in the collection(It falls back to parts[2]).
Finding a string:
string str="123.456.789.abc.def.ghi";
int i = str.IndexOf("789");
string subStr = str.Substring(i,3);
Replacing the substring:
str = str.Replace("789","").Replace("..",".");
Regex:
str = Regex.Replace(str,"789","");
The regex can give you a lot of flexibility finding things with minimum code, the drawback is it may be difficult to write them
If you know the index of where your substring begins and the length that it will be, you can use String.Substring(). This will give you the substring:
String myString = "123.456.789";
// looking for "789", which starts at index 8 and is length 3
String smallString = myString.Substring(8, 3);
If you are trying to remove a specific part of the string, use String.Replace():
String myString = "123.456.789";
String smallString = myString.Replace("789", "");
var newstr = new String(str.where(c => "789")).tostring();..i guess this would work or you can use sumthng like this
Try using Replace.
String.Replace("789", "")
I know nothing of C# so I'm hoping somebody here can help. So my question is how would I add a "," after the fourth character in a string. Something like:
Hell,o?
You can use .Insert():
string test = "Hello";
test = test.Insert(4, ",");
You should check if the string is long enough though like so:
if (test.Length > 4) {
test = test.Insert(4, ",");
}
You need to use String.Insert and give the number 4 as parameter (since the first char is on place 0)
string s = "hello";
s = s.Insert(4, ",");
Use String.Insert.
E.g. myString.Insert(4, ",");
String.Insert is the answer:
string test1 = "Hello";
string test2 = test1.Insert(4, ",");
http://msdn.microsoft.com/en-us/library/system.string.insert.aspx
var str ="Hello";
var finalString = string.Format("{0},{1}",str.Substring(0,4),str.Substring(4));
Firstly, strings are immutable so you have to create a new string
var sampleString = "Testing";
var resultString = sampleString.Insert(3, ",);
resultString is "Test,ing"
Use below code
String str = "Hello";
str = str.Substring(0, 4) + "," + str.Substring(4, str.Length - 4);
I'm gonna Propose an alternative to insert, this way it'll be possible for future users to use for editing a longer string and put in values at different intervals eg.
"hello my name is Anders"
becomes
"hell,o my, nam,e is, And,ers"
A string in C# is basically an array of chars, so you could loop through it and when you reach the fourth loop you could insert your ,
something like this
string hello="hello";
string newvar ="";
foreach(int i =0;i<hello.length;i++)
{
if(i==4)
newvar+=",";
newvar+=hello[i];
}
if you want it to be each fourth space you can check if 0%=4/i
you can also use Substring split it up into multiple pieces put in your "," and put it back together, I suggest you take a look at the documentation for the string class at Microsofts homepage
I'm building a page and would like to know how to extract substring from a string until finds a comma in ASP.Net C#. Can someone help please?
substring = str.Split(',')[0];
If str doesn't contain any commas, substring will be the same as str.
EDIT: as with most things, performance of this will vary for edge cases. If there are lots and lots of commas, this will create lots of String instances on the heap that won't be used. If it is a 5000 character string with a comma near the start, the IndexOf+Substring method will perform much better. However, for reasonably small strings this method will work fine.
var firstPart = str.Split(new [] { ',' }, 2)[0]
Second parameter tells maximum number of parts. Specifying 2 ensures performance is fine even if there are lots and lots of commas.
You can use IndexOf() to find out where is the comma, and then extract the substring. If you are sure it will always have the comma you can skip the check.
string a = "asdkjafjksdlfm,dsklfmdkslfmdkslmfksd";
int comma = a.IndexOf(',');
string b = a;
if (comma != -1)
{
b = a.Substring(0, comma);
}
Console.WriteLine(b);
myString = myString.Substring(0,myString.IndexOf(','));
Alina, based on what you wrote above, then Split will work for you.
string[] a = comment.Split(',');
Given your example string, then a[0] = "aaa", a[1] = "bbbbb", a[2] = "cccc", and a[3] = "dddd"
string NoComma = "";
string example = "text before first comma, more stuff and another comma, there";
string result = example.IndexOf(',') == 0 ? NoComma : example.Split(',')[0];