C# 2.0 function to get Second Word from string [closed]

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I need to write a function that 开发者_高级运维will return me the part after the first word (first whitespace).

For example I have got below string in C# 2.0.

string str = "M000. New Delhi"

Now I want to write a function which return "New Delhi" if str is passed.

Please suggest!!

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To get the part of the string after the first space:

string city = str.Substring(str.IndexOf(' ') + 1);

This will also give a result even if there happens to be no space in the string. The IndexOf method will return -1 in that case, so the code will return the entire string. If you would want an empty string or an exception in that case, then you would get the index into a variable first so that you can check the value:

string city;
int index = str.IndexOf(' ');
if (index == -1) {
  throw new ArgumentException("Unable to find a space in the string.");
} else {
  city = str.Substring(index + 1);
}

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string WhichIsBestDelhi(String str)
{
  return "New Delhi";
}

This has the added benefit of returning "New Delhi" no matter what string is passed!

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 string  s = str.Split(new char[]{'.'})[1].Trim();

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I want to write a function which return "New Delhi" if str is passed.

Here you go.

public string NewDehliFunction(string str)
{
    if (str == "M000. New Delhi")
        return "New Delhi";
    else
        return "?"; // what happens here???
}

But the big question is "What do you want it to do when it is passed something else?"

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• Step 1: Take the first index of " "(whitespace) (5 for your string)
• Step 2: Increment the number you found in Step 1, by 1 (6 for your case)

• Step 3: Take the substring of the given string with start index of the number you found in Step 2 (str.Substring(6) for your case)

      private static string ReturnThePartOfAStringAfterTheFirstWordAndWhiteSpace(string str)
      {
          if(str.Contains(" "))
          {
                int indexOfFirstWhiteSpace = str.IndexOf(" ");
                string remainingStringAfterTheFirstWhiteSpace = str.Substring(indexOfFirstWhiteSpace + 1);
                return remainingStringAfterTheFirstWhiteSpace;
          }
          else 
                return str;
      }
  

You can use this method for any string to find the part after the first whitespace, which means the part after the first word.

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It's all very unclear. Simplest case:

var result = str.Substring(6);

More sophisticated:

var result = str.Substring(str.IndexOf(". ")); // Possible off-by-one; can never remember

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// replace the "M000. "

str.Replace("M000. ",String.Empty);