remove "," from string if present at end [closed]

Question

What is the best way to remove , from following strings.

1. one,two,three,
2. three,four,five

3. six,seven,eight,nine,ten,

   int strLength = someString.Length;
   
   if (strLength > 0)
   {
        findString = findString .Substring(0, str.Length - 1);
   }
   
   if (findString ==",")
   {
        someString.Remove(someString.Length - 1)
   }
   

I have quickly compiled this code directly in StackExchange editor as an example (It may be have syntax error.

Please take above as logic purpose only.

I would appreciate if someone can provide optimized code for above logic.

UPDATE: I actually want to remove , from string if present at the end of string not in middle.

Answer 1

How about this.

yourString = yourString.TrimEnd(',');

Answer 2

A one line option:

someString = someString.EndsWith(",") ? someString.Substring(0, someString.Length - 1) : someString;

EDIT:

As per Dilshod's answer, this can be expressed as

someString = someString.TrimEnd(',');

which, IMHO, is better.