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File handling issue

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  • _ __yash__

    CFileStdio saptxt; saptxt.Open("**temp_170807.txt**",CFile::modeRead); In the above case the file temp_170807 has to be located in the same folder as the application. How can i change it to something like "C:\My folder\temp_170807.txt"?? Also how can i make this text-file name generic ie. like "temp_*.txt"?? I m using VC++ MFC application

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    sw thi
    wrote on last edited by
    #2

    Isn't it CStdioFile?? And you can just include the path also with the file name. saptxt.Open("C:\\My Folder\\temp.txt",CFile::modeRead); But you can’t open a bunch of files using *, if that’s what you meant by generic file name.

    "What's on your mind, if you will allow the overstatement?"

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    • _ __yash__

      CFileStdio saptxt; saptxt.Open("**temp_170807.txt**",CFile::modeRead); In the above case the file temp_170807 has to be located in the same folder as the application. How can i change it to something like "C:\My folder\temp_170807.txt"?? Also how can i make this text-file name generic ie. like "temp_*.txt"?? I m using VC++ MFC application

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      Waldermort
      wrote on last edited by
      #3

      yashveer wrote:

      In the above case the file temp_170807 has to be located in the same folder as the application. How can i change it to something like "C:\My folder\temp_170807.txt"??

      Err, saptxt.Open("C:\My folder\temp_170807.txt",CFile::modeRead); or am I missing something here?

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      • W Waldermort

        yashveer wrote:

        In the above case the file temp_170807 has to be located in the same folder as the application. How can i change it to something like "C:\My folder\temp_170807.txt"??

        Err, saptxt.Open("C:\My folder\temp_170807.txt",CFile::modeRead); or am I missing something here?

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        SnaKeBeD
        wrote on last edited by
        #4

        hi, please mention the complete error... also,change the line to saptext.Open("C:\\My folder\\temp_170807.txt",CFile::modeRead); note the slashes...

        swaroop

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        • _ __yash__

          CFileStdio saptxt; saptxt.Open("**temp_170807.txt**",CFile::modeRead); In the above case the file temp_170807 has to be located in the same folder as the application. How can i change it to something like "C:\My folder\temp_170807.txt"?? Also how can i make this text-file name generic ie. like "temp_*.txt"?? I m using VC++ MFC application

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          __yash__
          wrote on last edited by
          #5

          Well thanks Swathee i was putting single back-slash"\" double back-slash solved the problem...thnks[:)] but the problem of temp_*.txt still remains what can i do to get rid of this problem?? Program doesnt take temp_*.txt

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          • S SnaKeBeD

            hi, please mention the complete error... also,change the line to saptext.Open("C:\\My folder\\temp_170807.txt",CFile::modeRead); note the slashes...

            swaroop

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            __yash__
            wrote on last edited by
            #6

            hi swaroop double back-slash solved that problem... In the location C:\Myfolder i could have, lets say: temp_170807.txt temp_180807.txt, etc.... But only one file at a time will be present so i need to give a generic criteria like: C:\\My folder\\temp_*.txt Hope you got the problem

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            • _ __yash__

              Well thanks Swathee i was putting single back-slash"\" double back-slash solved the problem...thnks[:)] but the problem of temp_*.txt still remains what can i do to get rid of this problem?? Program doesnt take temp_*.txt

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              sw thi
              wrote on last edited by
              #7

              What are you trying to do exactly?? you have to open files separately you can't open them in a bunch.

              "What's on your mind, if you will allow the overstatement?"

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              • S sw thi

                What are you trying to do exactly?? you have to open files separately you can't open them in a bunch.

                "What's on your mind, if you will allow the overstatement?"

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                __yash__
                wrote on last edited by
                #8

                i m opening only one file at a time.... only one file at any given time will be present in the folder: C:\\My folder\\ i.e. i have either text_1000.txt or text_1001.txt in that location so i need to give something like text_*.txt i hope its clear...

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                • _ __yash__

                  hi swaroop double back-slash solved that problem... In the location C:\Myfolder i could have, lets say: temp_170807.txt temp_180807.txt, etc.... But only one file at a time will be present so i need to give a generic criteria like: C:\\My folder\\temp_*.txt Hope you got the problem

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                  SnaKeBeD
                  wrote on last edited by
                  #9

                  better u don use the multiple selection like this, use a CFileDialog class for that purpose, refer MSDN

                  swaroop

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                  • S SnaKeBeD

                    better u don use the multiple selection like this, use a CFileDialog class for that purpose, refer MSDN

                    swaroop

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                    SnaKeBeD
                    wrote on last edited by
                    #10

                    actullay by giving * wont solve ur problem, os else wat u can do is , if the file name ends with constant increase like temp_001, temp_002, etc just put the file open in a loop , concat the file name with the count (eg001,002) and open it and use it, don forget to close before u leave the loop:)

                    swaroop

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                    • _ __yash__

                      i m opening only one file at a time.... only one file at any given time will be present in the folder: C:\\My folder\\ i.e. i have either text_1000.txt or text_1001.txt in that location so i need to give something like text_*.txt i hope its clear...

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                      sw thi
                      wrote on last edited by
                      #11

                      I guess you will have to find the file name at runtime and then read it?!! There is a class called CFileFind MFC, you can use that, CFileFind finder; finder.FindFile("C:\\Design Docs\\temp*.txt"); // this will find your file finder.FindNextFile(); // it is compulsory to call this function before you call GetFilePath CString filename = finder.GetFilePath(); // this will get the file name along with the path, so you can use this to open the file and read. finder.Close(); Hope this solves your problem. Happy weekend.

                      "What's on your mind, if you will allow the overstatement?"

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                      • S sw thi

                        I guess you will have to find the file name at runtime and then read it?!! There is a class called CFileFind MFC, you can use that, CFileFind finder; finder.FindFile("C:\\Design Docs\\temp*.txt"); // this will find your file finder.FindNextFile(); // it is compulsory to call this function before you call GetFilePath CString filename = finder.GetFilePath(); // this will get the file name along with the path, so you can use this to open the file and read. finder.Close(); Hope this solves your problem. Happy weekend.

                        "What's on your mind, if you will allow the overstatement?"

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                        __yash__
                        wrote on last edited by
                        #12

                        Thank you very much Swathee It solved my problem Happy weekend :)

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                        • _ __yash__

                          CFileStdio saptxt; saptxt.Open("**temp_170807.txt**",CFile::modeRead); In the above case the file temp_170807 has to be located in the same folder as the application. How can i change it to something like "C:\My folder\temp_170807.txt"?? Also how can i make this text-file name generic ie. like "temp_*.txt"?? I m using VC++ MFC application

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                          David Crow
                          wrote on last edited by
                          #13

                          I suggest studying up on the concept of absolute vs. relative paths.


                          "A good athlete is the result of a good and worthy opponent." - David Crow

                          "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

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