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Remove quotes from the start and end of a string [closed]

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I have the string
"{ "type" : "Stage_FF_Hot_Alerts__c"}"
I want to it be
{ "type" : "Stage_FF_Hot_Alerts__c"}
i.e. I want to remove quotes from start and end. How can I achieve this?

You could use Trim:
var a = "\"{ \"type\" : \"Stage_FF_Hot_Alerts__c\"}\"";
var b = a.Trim('"');
Console.WriteLine(a);
Console.WriteLine(b);
It will remove all leading and trailing quotation marks.
Try it online

You can also use:
var quotedString = "\"hello\"";
var unQuotedString = quotedString.TrimStart('"').TrimEnd('"');

Extract title from name in c# [closed]

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How do I extract title from name as Mr. from Mr.ABC or Dr. from Dr.XYZ or M/S. from M/S. PQR in C#?

I would recommend regex for a clean way to get the title.
Regex regex = new Regex(#"^(Mr|Ms|Dr|Sr)\.");
Match match = regex.Match("Mr.ABC");
Console.WriteLine(match.Value);

You can split the string on '.' and then take the first value.
string str = "Mr.ABC";
string title = str.Spilt('.')[0];

There is no need to use regex.
Use String Split method:
var title = myString.Split('.')[0];

How i can get the first match in regex and import this match in a string? [closed]

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For example using a regex expression del(.*?)del get delcatdel
and save the result in string or in text
word1word2delcatdelword3word4deldogdelword5
in my text (or string) i need obtain delcatdel
USING c sharp
please anybody help me

var regex = new Regex("del(.*?)del");
var match = regex.Match("word1word2delcatdelword3word4deldogdelword5");
string matched = match.Value;

Simple solution for #"\b \b" [closed]

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I am trying read one string from TextBox and use in my script.
Suppose this TextBox name is: txt3.
I want read this value and use in below lines:
string s = Regex.Replace(str,
#"\btxt3.Text\b",
txt4.Text,
RegexOptions.IgnoreCase);
How I can write this #"\btxt3.Text\b" ?
I want write that as :
string str==#"\btxt3.Text\b";

You want something like:
String.Format(#"\b{0}\b", txt3.Text)

Try this
string s = Regex.Replace(str, string.Format(#"\b{0}\b",txt3.Text), txt4.Text, RegexOptions.IgnoreCase);

If you want to combine value of txt3 with other strings, one way to do it is write
"\\b" + txt3.Text + "\\b"
instead of
#"\btxt3.Text\b"

How can I get the contents of a string before a particular character? [closed]

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I want to get the previous chars from a certain char in a string.
For example: myString = "26+", so I want to get 26 without +. How can I do this?

Use Substring and IndexOf.
string str = "26+";
string requiredString = str.Substring(0, str.IndexOf('+'));
strings are immutable in C# and you have to assign the results to string itself or some other string.

The function String.Substring will do what you need.
yourString.Substring(0, keepCharactersBeforeHere);