Replace two backslashes with one Not working RSS

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  masterdineen

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  Replace two backslashes with one Not working

  Feb 25, 2020 01:58 PM|masterdineen|LINK

  Hello there.

  This is quite a simple issue or should be.

  All i want to do within my code is replace "\\" with "\"

  see example below.

  string s = "test"\\"MoreTesting";
              s = s.Replace(@"\\", @"\");

  but the string does not change.

  can someone help me please.

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  mgebhard

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  Re: Replace two backslashes with one Not working

  Feb 25, 2020 02:09 PM|mgebhard|LINK

  masterdineen

  string s = "test"\\"MoreTesting";

  The two backslashes are required to escape the single backslash character because the backslash has special meaning within a string.  Use the literal "@" if you want a single backslash in the code.

  string s = @"test\MoreTesting";

  A side from string basics.  Your code is invalid and does not compile.

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  masterdineen

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  Re: Replace two backslashes with one Not working

  Feb 25, 2020 02:13 PM|masterdineen|LINK

  Thank you for getting back to quickly.

  What about taking a SSIS variable that has a filepath.

  for example the SSIS variable would be 

  \\server.com\folder1\folder2\excelFile_2020.xlsx

  string excelfilepath = @Dts.Variables["User::ExcelFilePath"].Value.ToString();

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  mgebhard

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  Re: Replace two backslashes with one Not working

  Feb 25, 2020 03:19 PM|mgebhard|LINK

  masterdineen

  Thank you for getting back to quickly.

  What about taking a SSIS variable that has a filepath.

  for example the SSIS variable would be 

  \\server.com\folder1\folder2\excelFile_2020.xlsx

  string excelfilepath = @Dts.Variables["User::ExcelFilePath"].Value.ToString();

  I'm not sure what you are asking.  Strings behave as written in the C# programming guide. 

  Are you receiving an error message?  If so, what is the error message?

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  masterdineen

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  Re: Replace two backslashes with one Not working

  Feb 25, 2020 03:47 PM|masterdineen|LINK

  i have a c# script task in my ssis package,

  i am passing a ssis variable contains a excel filepath.  = \\server.com\folder1\folder2\excelFile_2020.xlsx

  when i debug the c# my filepath becomes = \\\\server.com\\folder1\\folder2\\excelFile_2020.xlsx

  then i get an execption error ( Exception has been thrown by the target of an invocation )

  i assume this is because of the extra backslashes, 

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  PatriceSc

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  Re: Replace two backslashes with one Not working

  Feb 25, 2020 04:17 PM|PatriceSc|LINK

  Hi,

  First the C# debugger is showing strings using the C# syntax. \ is used to introduce an escape sequence and needs to be escaped (or you can use the @ prefix). See https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/tokens/verbatim or :

  using System;
  
  namespace ConsoleDemo
  {
      class Program
      {
          public static void Main()
          {
              var v1 = "a\\b"; // debugger shows a\\b
              var v2 = @"a\b"; // debugger shows a\\b
              Console.WriteLine(v1==v2); // console shows True
              Console.WriteLine(v1); // console shows a\b
          }
      }
  }

  Get back at the exception and if you can try to dump ex.ToString() to get the full exception chain and stack rather than maybe ex.Message as you are perhaps doing now...

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  samwu

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  Re: Replace two backslashes with one Not working

  Feb 26, 2020 05:22 AM|samwu|LINK

  Hi masterdineen,

  masterdineen

  i am passing a ssis variable contains a excel filepath.  = \\server.com\folder1\folder2\excelFile_2020.xlsx

  when i debug the c# my filepath becomes = \\\\server.com\\folder1\\folder2\\excelFile_2020.xlsx

  I don't know why there are 2 more backslashes in front of your file path, but if you want to get the absolute path for the specified path string, you can try to use the Path.GetFull Path Method.

  string path = Path.GetFullPath(@"\\\\server.com\\folder1\\folder2\\excelFile_2020.xlsx");

  More information about Path.GetFullPath you can refer to this link: https://docs.microsoft.com/en-us/dotnet/api/system.io.path.getfullpath?view=netframework-4.8

  If you still have the question, please post your code.

  Best regards,

  Sam

  .NET forums are moving to a new home on Microsoft Q&A, we encourage you to go to Microsoft Q&A for .NET for posting new questions and get involved today.
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  masterdineen

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  Re: Replace two backslashes with one Not working

  Feb 26, 2020 06:31 AM|masterdineen|LINK

  Hi Sam
  
  C# requires an escape backlash for each “\” to display unless there is a @ at the
  beginning. My file path is coming from a SSIS variable.
  
  so i shall try your solution.
  
  Regards
  
  Rob