how to escape multiple curly brackets in C#? [duplicate] - c#

This question already has answers here:
How to escape braces (curly brackets) in a format string in .NET
(11 answers)
Closed 9 years ago.
I need to escape the first pair of curly brackets but the second pair or the inner pair should not be escaped.
string.Format("#Neptune.ShowAlert(\{content:{0}\})", ex.Message);
I have tried the above but I get the "Unrecognized escape sequence" error.


Use {{ and }} to escape the braces.

Related

How can I print \" In C# [duplicate]

This question already has answers here:
How do I write a backslash (\) in a string?
(6 answers)
Closed 2 years ago.
I'm trying to print \"Hey\" in the Console But when I run it It just print the "Hey" without \ and when i put another \ in the beginning and \ in end it says theres an Error

You have to escape the " as well as the \. Both should be escaped with a backslash itself. Your final result should look something like:
Console.WriteLine("\\\"Hey\\\"");

How to add {,},[,] brackets to regex pattern to allow them as special characters [duplicate]

This question already has answers here:
Reference - What does this regex mean?
(1 answer)
What special characters must be escaped in regular expressions?
(13 answers)
Closed 4 years ago.
I am having this below regex pattern. I want to allow these below characters as special characters.
{
}
[
]
Regex regEx = new Regex(#"^(?=.*[A-Z])(?=.*[!##$%^&*()+_<>~-])(?=.*[0-9])(?=.*[a-z]).{8,15}$");
Is there a way to add them

You'll need to escape them within the regex. Within a regular expression, you can refer to "\[" to get a '[' character, for example.
Note that in C, C#, C++, Java, etc, you usually need to double up the '\' character to escape the escape character. So when adding '[' to your regex, you would actually use "\\[". In your case you're using an #"" so you've escaped that trap.

C# .NET Regex 'Unrecognized escape sequence' [duplicate]

This question already has answers here:
Unrecognized escape sequence for path string containing backslashes
(5 answers)
Closed 7 years ago.
I'm trying to validate a password field using regex under the namespace System.Text.RegularExpressions but I'm getting three errors for
'Unrecognized escape sequence'.
When I double click on the errors it highlights the '-' in my expression for the character range but I don't know why this is wrong.
// password must contain one uppercase, one lowercase and one digit
Regex reg = new Regex("^(?=.*[!##$%^&*()\-_=+`~\[\]{}?|])(?=.+[a-z])(?=.+[A-Z])(? =.+[0-9]).{8,50}$");

Just add an # before the first quote to make it a verbatim string literal or escape the backslashes as \\.

it seems you have one space after ?
(? =.+[0-9]).{8,50}
remove that.

how to insert "{0}" as a string in c# [duplicate]

This question already has answers here:
How to escape braces (curly brackets) in a format string in .NET
(11 answers)
Escape curly brace '{' in String.Format [duplicate]
(1 answer)
Closed 9 years ago.
One of the strings I want to pass into a function contains {0}, which is a placeholder escape character in c#.
What is the correct syntax to get c# to ignore this? i tried encasing it in single quotes ('), but no good

Use double curly brackets.
Ex. '{0}' becomes '{{0}}'

Use this double curly brackets
{{0}}

You need to escape the curly braces like this:
{{0}}

how to match parentheses with regex in c# [duplicate]

This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Regular Expression to match outer brackets
I'm trying to match a string that contains parentheses but escaping the parentheses with a backslash gives me an error "unrecognized escape sequence". How do i match the parenthesis and retrieve whats inside?

use Regex.Escape(): http://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex.escape.aspx

Categories