CODEWITHSUNDEEP
c#visual-studio-2012
Revenant_01
Revenant_01

Reputation: 81

how can i trim the string in c# after each file extension name

I have a string of attachments like this:

"<a href="/departments/Attachments/2043_3162016062557_SharePoint_Health%20Check‌​%20Assessment.docx">SharePoint_Health Check Assessment.docx</a><br><a href="/departments/Attachments/2043_3162016062557_Test%20Workflow.docx">Tes‌​t Workflow.docx</a><br>" .

and i used this method :

AttachmentName = System.Text.RegularExpressions.Regex.Replace(AttachmentName,  @"<(.|\n)*?>", "String.Empty");

and i got result :

SharePoint_Health Check Assessment.docxTest Workflow.docx

How can i split the string using c# and get the result with each file name seperately like :

SharePoint_Health Check Assessment.docx

Test Workflow.docx

and then show them into some control one by one.

and after that i want just the URL of the string like "http://srumos1/departments/Attachments/2053_3172016093545_ITPCTemplate.txt" and "http://srumos1/departments/Attachments/2053_3172016093545_ITPCTemplate.txt"

how can i do that

Upvotes: 0

Views: 220

Answers (2)

D Stanley
D Stanley

Reputation: 152634

i got it this way AttachmentName = Regex.Replace(AttachmentName, @"<(.|\n)*?>", string.Empty);

Well there's your problem. You had valid delimiter but stripped them away for some reason. Leave the delimiters there and use String.Split to split them based on that delimiter.

Or replace the HTML with a delimiter instead of an empty string:

AttachmentName = Regex.Replace(AttachmentName, @"<(.|\n)*?>", "|");

And then split based off of that:

string[] filenames = AttachmentName.Split(new [] {'|'},
                                          StringSplitOptions.RemoveEmptyEntries);

Upvotes: 2

Cihan Uygun
Cihan Uygun

Reputation: 2138

You can use a regex for extracting file names if you do not have any other clear way to do that. Can you try the code below ?;

using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;
using System.Text.RegularExpressions;

namespace ExtensionExtractingTest
{
    class Program
    {
        static void Main(string[] args)
        {
            string fileNames = "test.docxtest2.txttest3.pdftest.test.xlxtest.docxtest2.txttest3.pdftest.test.xlxtest.docxtest2.txttest3.pdftest.test.xlxourtest.txtnewtest.pdfstackoverflow.pdf";

            //Add your extensions to regex definition
            Regex fileNameMatchRegex = new Regex(@"[a-zA-Z0-9]*(\.txt|\.pdf|\.docx|\.txt|\.xlx)", RegexOptions.IgnoreCase);
            MatchCollection matchResult = fileNameMatchRegex.Matches(fileNames);
            List<string> fileNamesList = new List<string>();
            foreach (Match item in matchResult)
            {
                fileNamesList.Add(item.Value);
            }
            fileNamesList = fileNamesList.Distinct().ToList();

            Console.WriteLine(string.Join(";", fileNamesList));
        }
    }
}

And a working example is here http://ideone.com/gbopSe

PS: Please keep in mind you have to know your file name extensions or you have to predict filename extension length 3 or 4 and that will be a painful string parsing operation.

Hope this helps

Upvotes: 2

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