Best way to remove the last character from a string built with stringbuilder

Question

I have the following

data.AppendFormat(\"{0},\",dataToAppend);

The problem with this is that I am using it in a loop and there will be a t

Answer 1

How About this..

string str = "The quick brown fox jumps over the lazy dog,";
StringBuilder sb = new StringBuilder(str);
sb.Remove(str.Length - 1, 1);

Answer 2

I recommend, you change your loop algorithm:

• Add the comma not AFTER the item, but BEFORE
• Use a boolean variable, that starts with false, do suppress the first comma
• Set this boolean variable to true after testing it

Answer 3

You should use the string.Join method to turn a collection of items into a comma delimited string. It will ensure that there is no leading or trailing comma, as well as ensure the string is constructed efficiently (without unnecessary intermediate strings).

Answer 4

I prefer manipulating the length of the stringbuilder:

data.Length = data.Length - 1;

Answer 5

Yes, convert it to a string once the loop is done:

String str = data.ToString().TrimEnd(',');

Answer 6

Use the following after the loop.

.TrimEnd(',')

or simply change to

string commaSeparatedList = input.Aggregate((a, x) => a + ", " + x)