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Strange Problem at writing file

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    error1408
    wrote on last edited by
    #1

    Hi, my programm reads/writes an xml file. Here is how: Open file read Close file Open file write Close file Yes,it's necessary that way. My problem is, when I open the Windows Explorer (WinXp sp2) and look into that folder, after some time i get an exception that the file is openend partially by an user. This happens EVERYTIME at the same codeline: doc.save(myfile) (doc = xmlDocument). Why is that happening? Can i prevent that? If not, how can i handle that exception, without Thread.sleep loops? Please help me!

    S 1 Reply Last reply
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    • E error1408

      Hi, my programm reads/writes an xml file. Here is how: Open file read Close file Open file write Close file Yes,it's necessary that way. My problem is, when I open the Windows Explorer (WinXp sp2) and look into that folder, after some time i get an exception that the file is openend partially by an user. This happens EVERYTIME at the same codeline: doc.save(myfile) (doc = xmlDocument). Why is that happening? Can i prevent that? If not, how can i handle that exception, without Thread.sleep loops? Please help me!

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      Spacix One
      wrote on last edited by
      #2

      You might have left off the <pre></pre> tags and we can't see the code you posted...


      -Spacix All your skynet questions[^] belong to solved

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      • S Spacix One

        You might have left off the <pre></pre> tags and we can't see the code you posted...


        -Spacix All your skynet questions[^] belong to solved

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        error1408
        wrote on last edited by
        #3

        I did not post any code.

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        • E error1408

          I did not post any code.

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          Spacix One
          wrote on last edited by
          #4

          Ah, just looked like you did. is this being done in < .NET 2.0?


          -Spacix All your skynet questions[^] belong to solved

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          • S Spacix One

            Ah, just looked like you did. is this being done in < .NET 2.0?


            -Spacix All your skynet questions[^] belong to solved

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            error1408
            wrote on last edited by
            #5

            Yes .Net 2, i tried to convert and compile it with .net 3 but same thing happened.

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            • E error1408

              Yes .Net 2, i tried to convert and compile it with .net 3 but same thing happened.

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              Spacix One
              wrote on last edited by
              #6

              Are you using the old xmlreader and xmlwriter? If not then why do you "open, read, close" then "open, write, close" ?


              -Spacix All your skynet questions[^] belong to solved

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              • S Spacix One

                Are you using the old xmlreader and xmlwriter? If not then why do you "open, read, close" then "open, write, close" ?


                -Spacix All your skynet questions[^] belong to solved

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                error1408
                wrote on last edited by
                #7

                I'm using the xmlDocument Class. When i want to save with xmlDocument.save() that error happens

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                • E error1408

                  I'm using the xmlDocument Class. When i want to save with xmlDocument.save() that error happens

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                  J4amieC
                  wrote on last edited by
                  #8

                  Im willing to bet that you've not disposed properly of the stream when you open the file, hence when you come to write it there is already another process holding onto it (ie, your own program from earlier on during the read op)

                  --- How to get answers to your questions[^]

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                  • J J4amieC

                    Im willing to bet that you've not disposed properly of the stream when you open the file, hence when you come to write it there is already another process holding onto it (ie, your own program from earlier on during the read op)

                    --- How to get answers to your questions[^]

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                    error1408
                    wrote on last edited by
                    #9

                    Thats not the case, because it does not happen at all if i don't open the explorer and look into that folder.

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                    • E error1408

                      I'm using the xmlDocument Class. When i want to save with xmlDocument.save() that error happens

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                      Spacix One
                      wrote on last edited by
                      #10

                      once you call the load() method the file should no longer be accessed... Again I don't see why you "open, load, close" then "open, write, close" You should be fine with it in ram after you load it. "open, load" do your other stuff "append new data, close"


                      -Spacix All your skynet questions[^] belong to solved

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                      • S Spacix One

                        once you call the load() method the file should no longer be accessed... Again I don't see why you "open, load, close" then "open, write, close" You should be fine with it in ram after you load it. "open, load" do your other stuff "append new data, close"


                        -Spacix All your skynet questions[^] belong to solved

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                        error1408
                        wrote on last edited by
                        #11

                        I tried it. But it doesn't have an effect. Here is my code at the moment:

                        //some loop
                        XmlDocument doc = new XmlDocument();
                        doc.Load(FullFilePath);
                        .......//do sth.
                        doc.Save(FullFilePath); //<-There the error happens
                        //end of loop

                        S L 2 Replies Last reply
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                        • E error1408

                          I tried it. But it doesn't have an effect. Here is my code at the moment:

                          //some loop
                          XmlDocument doc = new XmlDocument();
                          doc.Load(FullFilePath);
                          .......//do sth.
                          doc.Save(FullFilePath); //<-There the error happens
                          //end of loop

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                          Spacix One
                          wrote on last edited by
                          #12

                          Does it error if you try to write to a different file path? (one you know you have write access to)


                          -Spacix All your skynet questions[^] belong to solved

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                          • E error1408

                            I tried it. But it doesn't have an effect. Here is my code at the moment:

                            //some loop
                            XmlDocument doc = new XmlDocument();
                            doc.Load(FullFilePath);
                            .......//do sth.
                            doc.Save(FullFilePath); //<-There the error happens
                            //end of loop

                            L Offline
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                            Luc Pattyn
                            wrote on last edited by
                            #13

                            Hi, if you want write or delete access (anything other than read access) to a file that just got created (by yourself or someone else, does not matter), chances are you will find the file is being accessed by some other process, and your access is not granted. Yhe other process very likely is some server code that is there to assist you somehow. Candidates are: - anti-virus software (Norton, McAfee, whatever) - indexing software (Google Desktop, MS Office, whatever) The common thing is these packages are looking all the time for new files, so they can inspect them. Microsoft is aware of the consequences; Windows Explorer will try rename and delete attempts up to five times (with one second interval), and only reports failure if the action continues to fail for that time. The solution: 1. either use a different file name 2. or remove all background reader candidates (bad idea) 3. or implement the retry loop as Explorer has it (use a Windows.Forms.Timer for this) :)

                            Luc Pattyn [Forum Guidelines] [My Articles]


                            this weeks tips: - make Visual display line numbers: Tools/Options/TextEditor/... - show exceptions with ToString() to see all information - before you ask a question here, search CodeProject, then Google


                            E 1 Reply Last reply
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                            • L Luc Pattyn

                              Hi, if you want write or delete access (anything other than read access) to a file that just got created (by yourself or someone else, does not matter), chances are you will find the file is being accessed by some other process, and your access is not granted. Yhe other process very likely is some server code that is there to assist you somehow. Candidates are: - anti-virus software (Norton, McAfee, whatever) - indexing software (Google Desktop, MS Office, whatever) The common thing is these packages are looking all the time for new files, so they can inspect them. Microsoft is aware of the consequences; Windows Explorer will try rename and delete attempts up to five times (with one second interval), and only reports failure if the action continues to fail for that time. The solution: 1. either use a different file name 2. or remove all background reader candidates (bad idea) 3. or implement the retry loop as Explorer has it (use a Windows.Forms.Timer for this) :)

                              Luc Pattyn [Forum Guidelines] [My Articles]


                              this weeks tips: - make Visual display line numbers: Tools/Options/TextEditor/... - show exceptions with ToString() to see all information - before you ask a question here, search CodeProject, then Google


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                              error1408
                              wrote on last edited by
                              #14

                              Thank you very much.

                              Luc Pattyn wrote:

                              The solution: 1. either use a different file name 2. or remove all background reader candidates (bad idea) 3. or implement the retry loop as Explorer has it (use a Windows.Forms.Timer for this)

                              1. and 2. are no solutions for me. I have to try 3. I think. I hoped i don't have to use a timer :(

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