Append "/" to a string

actually, the 2 first examples should work...
can you clarify "not working", please?

you use string.Format

rtf = string.Format(@"{0}\", rtf);

i tried this and it worked correctly

string rtf = string.Empty;
rtf += @"\";

this will work:

rtf = rtf + @"\\";

Use this code snippet, I'm sure it's OK.
You may not initialize empty value for rtf variable?

        private void Func()
        {
            String rtf = "";
            rtf = rtf + @"\";
            rtf = rtf + "\\";
        }

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The author question is: how to APPEND a backslash to a RTF text
The backslash is a very special character in RTF, so you will need to escape it with a double backslash.
If you start with an empty rtf, then a single backslash can be shown, but I guess that's not what the author is asking for.

rtf = "Testing Image Embading<br />\r\n<img alt=\"\" src=\"/Web%20Cleint/Home%20Page/Images/Stop.png\" /><br />\r\nEmage Embabeded here\r\n"
Regex exp = new Regex(@"img (alt=\.)?([^\.]+)\.png", RegexOptions.IgnoreCase);
                string InputText = rtf;
                MatchCollection MatchList = exp.Matches(InputText);
                Match FirstMatch = MatchList[0];
                for (int i = 0; i < MatchList.Count; i++)
                {
                    string str = @"\";                
                    string rtf1 = rtf.Replace("alt=\"\" src=\"/Web%20Cleint/Home%20Page/Images/Stop.png\"", rep);
                    string strToReplace; //= MatchList[i].ToString(); //;+ str;
                    //strToReplace = strToReplace.Substring(0, strToReplace.Length);
                    strToReplace = string.Format(@"{0}\", MatchList[i].ToString());
                    rtf = rtf.Replace(strToReplace, rep);
i hard corded rtf1 and it worked fine so what i want is for strToReplace to be equal to this string Web%20Cleint/Home%20Page/Images/Stop.png\"
and im trying to achieve that by using this string  string strToReplace; //= MatchList[i].ToString() + str;
it appends 2 \\ and doesnt match the other string
I hope this will help.

Guys this is what im doing for now
 string str = "\"";  
strToReplace = strToReplace + str and i will have to remove the additonal " after this string.

Is this the best way to do this?????
I dont know if i have to close the question or not

Thank you very much

> string str = "\"";  
is to append a double quote to the string...
which is not what you "asked" for?

I guess you don't want to tell us the "big picture"?

your last comments are confusing and unrelated with your original question...

string str = "\"";                
 string rtf1 = rtf.Replace("alt=\"\" src=\"/Web%20Cleint/Home%20Page/Images/Stop.png\"", rep);
string strToReplace = MatchList[i].ToString()+ str;
rtf = rtf.Replace(strToReplace, rep);
I asked for assistance on how to add a \ on my string, and as a  highlited earlier on if  
MatchList[i].ToString() = "alt=\"\" src=\"/Web%20Cleint/Home%20Page/Images/Stop.png ", my replace function wasnt working so i needed to add a single \ to the matchlist and so during run time @"\" will add two \\.
May you please append   string str = "\"";      to one string and do a replace at runtime and observe the results and do the same with str = @"\"; it wont work coz its got 2 \\.

I sorry for the confusion this might have caused.