Extract The Last Part (Section) of a String

Question

I need to extract only the last part of a string after a / character.

I have tried with LastIndexOf, but it fails.

Any solution?

Attempt

var strDiv2 = tbxAff.Substring(tbxAff.IndexOf(" / "), /*value is missing*/ );
dblDiv2 = Convert.ToDouble(strDiv2);`

Welcome to Stackoverflow! Please edit your question and insert C# code here. However, this http://stackoverflow.com/questions/15667927/how-to-keep-the-delimiters-of-regex-split will help you. — Ravimallya, Dec 12 '15 at 11:10
Post your code as text, **not** an image. That'll greatly improve your chances of getting an answer. Also, you can get the text from the TextBox so your question is really "*Extract the last part of a string*" — Wai Ha Lee, Dec 12 '15 at 11:11
Your problem has nothing to do with TextBoxes, Get the string out of the box and use string functions to manipulate it. Have you tried string.Split? — anhoppe, Dec 12 '15 at 11:15
LastIndexOf is way to go here, show us your attempt with LastIndexOf — CSharpie, Dec 12 '15 at 11:22

score 2 · Answer 1 · answered Dec 12 '15 at 11:24

You can just omit the second parameter. This would call the Substring(int) overload, which returns a substring that starts at a specified character position and continues to the end of the string.

string strDiv2 = tbxAff.Text.Substring(tbxAff.Text.IndexOf("/") + 1);

Also, if you're parsing the extracted substring as a double, you presumably want to exclude the / separator character.

score 0 · Accepted Answer · answered Dec 12 '15 at 11:26

0

Use the String.Split() function:

string[] y = tbxAff.Text.Split(new string[] { " / " }, StringSplitOptions.RemoveEmptyEntries);

Then use it like this:

string strDiv2 = y[1] // Second Part
dblDiv2 = Convert.ToDouble(strDiv2);

answered Dec 12 '15 at 11:26

Fᴀʀʜᴀɴ Aɴᴀᴍ

6,131
5
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score 0 · Answer 3 · answered Oct 12 '17 at 14:49

0

string clientSpnd = textBox1.Text.Substring(textBox1.Text.LastIndexOf(' ') + 1);

answered Oct 12 '17 at 14:49

Jehoshaphat M.

1
1

score 0 · Answer 4 · answered Mar 10 '21 at 02:44

Here is an extension method which will do safety checking:

public static class StringExtensions
{
     public static string LastPartOfStringFrom(this string str, char delimiter )
     {
         if (string.IsNullOrWhiteSpace(str)) return string.Empty;

         var index = str.LastIndexOf(delimiter);

         return (index == -1) ? str : str.Substring(index + 1);
     }
}

Extract The Last Part (Section) of a String

Attempt

4 Answers4