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string separate in two variables asp.net c#

We have a lot of string variables in an asp.net c# application with values like "document.doc"' "powernt,ppt", school.xls"', "theme.pdf" and son on. How can we separate in code behind in 2 new strings each variable and that 2 new variables must be: First new string is the name before the "." and the second string the extension or the name after the "."

 For example using one example I wrote:

main string : "document.doc" and this we want to store in 2 new variables like this:
first new variable value "document"
second new variable "doc"

In short is like separate the name and extension in 2 new variables.

What command or script can be used to do that in codebehind?
0
Alex E.
Asked:
Alex E.
  • 3
2 Solutions
 
zephyr_hex (Megan)DeveloperCommented:
You can use the Split() method.

Here is a Fiddle Demo

using System;
					
public class Program
{
	public static void Main()
	{
		var myString = "document.doc";
		var mySplit = myString.Split('.');
		for(int i = 0; i < mySplit.Length; i++) 
		{
			Console.WriteLine(mySplit[i]);
		}
	}
}

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0
 
zephyr_hex (Megan)DeveloperCommented:
Another way to do this would be to use IO.Path methods, if the string is always a file name.

Here is a Fiddle Demo

using System;
using System.IO;
					
public class Program
{
	public static void Main()
	{
		var myString = "document.doc";
		Console.WriteLine(Path.GetFileNameWithoutExtension(myString));
		Console.WriteLine(Path.GetExtension(myString).Replace(".",""));
	}
}

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0
 
zephyr_hex (Megan)DeveloperCommented:
And as a side note, it may be useful to use a Class object instead of a variable

Fiddle Demo

using System;
using System.IO;
					
public class Program
{
	public static void Main()
	{
		MyThing thing = new MyThing("document.doc");
		Console.WriteLine(thing.FileName);
		Console.WriteLine(thing.Extension);
	}
	
	public class MyThing 
	{
		public string FullName { get; set; }
		public string FileName { get; set; }
		public string Extension { get; set; }
		
		public MyThing(string thing)
		{
			FullName = thing;
			FileName = Path.GetFileNameWithoutExtension(thing);
			Extension = Path.GetExtension(thing).Replace(".","");
		}
	}
}

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0
 
Dustin SaundersDirector of OperationsCommented:
Another way is to use substring to split it up.  See this example:

            string document = "document9.27.2016.doc";
            int extensionMarker = document.LastIndexOf('.');
            string filename = document.Substring(0, extensionMarker);
            string extension = document.Substring(extensionMarker+1);

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Be aware of the method you use though (I'd use this or IO.Path) so that if you filename contains multiple periods (as mine does above) it always looks to the last one.
0
 
Alex E.Author Commented:
Thank you worked perfect!
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