CODEWITHSUNDEEP
c#stringstringbuilder
Prateik
Prateik

Reputation: 341

Stringbuilder adds backslash after converting it to string

I have a situation in which I want to add inverted commas the the string.

static void Main(string[] args)
    {
        int valueCounter = 0;
        int valueCount = 0;
        var valueBuilder = new StringBuilder();
        List<string> values = new List<string>();
        values.Add("AAAA");
        values.Add("BBBB");
        values.Add("CCCC");
        valueCount = values.Count;

        foreach (var value in values)
        {
            valueCounter++;
            if ((valueCounter - 1) > 0)
                valueBuilder.Append("\"");
            valueBuilder.Append(values[valueCounter - 1].ToString());

            if (valueCounter != valueCount)
            {
                valueBuilder.Append(@",");
            }
        }

        string output = valueBuilder.ToString();

    }

enter image description here enter image description here

As you can see, after converting the Stringbuilder to string, it adds the backslash to the string.

Please help me to know how I can get the desired out as : "AAAA","BBBB", "CCCC"

Upvotes: 1

Views: 3396

Answers (4)

DmitryG
DmitryG

Reputation: 17848

Here are the corrected version of your code (fixed enclosing of the first fragments):

string[] strArr = new string[] { 
    "AAAA", "BBBB","CCCC"
};
StringBuilder sb = new StringBuilder();
for(int i = 0; i < strArr.Length; i++) {
    sb.Append('"');
    sb.Append(strArr[i]);
    sb.Append('"');
    if(i < strArr.Length - 1)
        sb.Append(',');
}
var output = sb.ToString();

This is how the debugger displays result (quoted/escaped view):
enter image description here

This is how it looks in human-readable format: "AAAA","BBBB","CCCC"

Tips&tricks:
You can use the nq format-specifier to display string unquoted/unescaped:

    output,nq

enter image description here

Upvotes: 4

Kh.Taheri
Kh.Taheri

Reputation: 955

I think the following code for foreach loop will solve your problem.

foreach (var value in values)
    {
        value = "\""+value+"\"";
        valueBuilder.Append(value);

        if (++valueCounter != valueCount)
        {
            valueBuilder.Append(@",");
        }
    }

Upvotes: 0

SWiggels
SWiggels

Reputation: 2296

Just remove valueBuilder.Append("\"");

My mistake. It does just escape the \

Upvotes: -2

JRSofty
JRSofty

Reputation: 1256

The use of quotation marks in a Java String object must be escaped. The \ you are complaining about is only visible in your tool and is required to escape the " so that no error occurs. If you were to perform a System.out.println(output); you will not see the \ character.

Upvotes: -1

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