how to read particular word in file

string regexMatchString= "Server :=Dataserver";
string text = System.IO.File.ReadAllText(@"C:\Users\Public\TestFolder\Textfile.txt");
string matchedString = Regex.Match(text, regexMatchStrig).ToString();

Hi,
Please find the solution of the same.
Note: I have used the 'Server' as keyword to find the DataServer value.

<blockquote class="FQ"><div class="FQA">Quote:</div>/// <summary>
        /// This method will search for a Key value and return its value
        /// </summary>
        /// <param name="filePath"></param>
        /// <param name="referencevalue"></param>
        private static void SearchString(string filePath, string referencevalue, string delimiter)
        {
            try
            {
                if (System.IO.File.Exists(filePath))
                {
                    StreamReader sr = new StreamReader(new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite));
                    string Originaldata = string.Empty;
                    string Updatedata = string.Empty;

                    //Read Line by Line
                    string[] file = System.IO.File.ReadAllLines(filePath);
                    foreach (string line in file)
                    {
                        if (line.Contains(referencevalue))
                        {
                            string[] arrValue = Regex.Split(line, delimiter);
                            string value = arrValue[1];
                            Console.WriteLine("The Value of Server is " + value);
                        }
                    }
                }
                else
                {
                    Console.WriteLine("[Error] File does not exists in path -" + filePath);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
            }
        }
</blockquote>

Hope it helps. Thanks.