c# replace double quotes

I searched hundreds of entries and tried tons of examples - I cannot find how to replace double quotes so my sql insert will run.
This runs for single quotes:
memberID = memberID.Replace("'","''");
so I need the same thing for double quotes.

Also, does a replace work on all the characters in the string or just once?
dcassAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Jaime OlivaresSoftware ArchitectCommented:
To replace double quotes:

memberID = memberID.Replace("\"","other");

Replace method will replace all ocurrences
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
dcassAuthor Commented:
Will this show the double quotes back in the text like the single quote solution will?
0
dcassAuthor Commented:
What other characters will interfere with an insert?
How about ampersand?
0
Cloud Class® Course: Amazon Web Services - Basic

Are you thinking about creating an Amazon Web Services account for your business? Not sure where to start? In this course you’ll get an overview of the history of AWS and take a tour of their user interface.

PedroBuhigasCommented:
I think what you're after is:
memberID = memberID.Replace("\"\"","other");
0
Jaime OlivaresSoftware ArchitectCommented:
I think you just have to worry about the single quote, not double quote or other.
I use to replace the single quote with a tick (`):

memberID = memberID.Replace("'","`");
0
Jaime OlivaresSoftware ArchitectCommented:
but if you want to avoid to use all these, better you use parameters instead.
have a look to:
http://www.codeproject.com/KB/database/SqlInjectionAttacks.aspx
read "Parameterised Queries" section.
0
carlsiyCommented:
why not use....
memberID=@memberID
0
Tony McCreathTechnical SEO ConsultantCommented:
I developed the following code to resolve encoding problems when directly using quoted text in mySql commands.
private static Regex _FromToRegex = new Regex(@"([\\\n\r\b\t'""\x1a\x00])",RegexOptions.Compiled);
 
private static string FromToMatchEvaluator(Match match)
{
	switch (match.Value)
	{
		case "\\":
			return "\\\\";
		case "\n":
			return "\\n";
		case "\r":
			return "\\r";
		case "\b":
			return "\\b";
		case "\t":
			return "\\t";
		case "\x1a":
			return "\\Z";
		case "\x00":
			return "\\0";
		case "'":
			return "\\'"; 
		case "\"":
			return "\\\"";
		default:
			return match.Value;
	}
}
 
public static string SqlEscapes(string s)
{
	return _FromToRegex.Replace(s,new MatchEvaluator(FromToMatchEvaluator));
}
 
public static string SqlString(String str)
{
	return "'"+SqlEscapes(str)+"'";
}

Open in new window

0
rochefcCommented:
To replace Single Quotes, Double Quotes or Carriage Returns for use with Crystal Reports in C# try
 
fieldValue = fieldValue.Replace("\r\n", "' & chr(010) & '").Replace("'", "''").Replace("\"", "''''");

This allows the Crystal Report to Print with the desired result
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
C#

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.