C# – How to add double quotes to a string that is inside a variable

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication
{
    class Program
    {
        static void Main(string[] args)
        {

            string resstr = AddDoubleQuotesInstring("Append double quote to string");
        }
        public static string AddDoubleQuotesInstring(string value)
        {
            //Put a string between double quotes.
            /// <param name="value">Value to be put between double quotes ex: foo</param>
            /// <returns>double quoted string ex: "foo"</returns>
            return "\"" + value + "\"";
        }
    }
}

AddDoubleQuotesInstring which takes a string input and returns the input string enclosed within double quotes.

AddDoubleQuotesInstring Method:

• This method takes a string value as input.
• It then concatenates double quotes at the beginning and end of the input string.
• Finally, it returns the modified string with double quotes added at both ends.

Explanation:

• The purpose of this method is to encapsulate a given string within double quotes.
• This functionality is commonly used when dealing with strings that are meant to represent literal values or text within code or data formats where double quotes denote string boundaries.

For example, if value is "Append double quote to string", the method will return ""Append double quote to string"", where the string is enclosed within double quotes.

Let’s I want to save the text file with double string Then how we can achieve that task? Follow the below code.

using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class GridView : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        WriteFileText();
    }

    public void WriteFileText()
    {
        string spath = System.Web.HttpContext.Current.Server.MapPath("~/FileStorage");
        string path = spath + "/mytext.txt";
        List<Person> _person = new List<Person>();
        _person.Add(new Person { name = "Rahul", lastname = "Sharma", city = "New Delhi", });
        _person.Add(new Person { name = "Tom", lastname = "Curz", city = "Tokyo" });
        char seperator = ';';
        StringBuilder sb = new StringBuilder();
        foreach (Person obj in _person)
        {
            sb.Append("\"" + obj.name + "\"");
            sb.Append(seperator);
            sb.Append("\"" + obj.lastname + "\"");
            sb.Append(seperator);
            sb.Append("\"" + obj.city + "\"");
            sb.AppendLine();
        }
        File.AppendAllText(path, sb.ToString());
    }
}
class Person
{
    public string name { get; set; }
    public string lastname { get; set; }
    public string city { get; set; }
}

Output: