Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • World
  • Users
  • Groups
Skins
  • Light
  • Cerulean
  • Cosmo
  • Flatly
  • Journal
  • Litera
  • Lumen
  • Lux
  • Materia
  • Minty
  • Morph
  • Pulse
  • Sandstone
  • Simplex
  • Sketchy
  • Spacelab
  • United
  • Yeti
  • Zephyr
  • Dark
  • Cyborg
  • Darkly
  • Quartz
  • Slate
  • Solar
  • Superhero
  • Vapor

  • Default (No Skin)
  • No Skin
Collapse
Code Project
  1. Home
  2. General Programming
  3. C#
  4. Exception:System.IndexOutOfRangeException (Urgent)

Exception:System.IndexOutOfRangeException (Urgent)

Scheduled Pinned Locked Moved C#
databasedata-structurestutorial
20 Posts 5 Posters 0 Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • S Saira Tanwir

    hi friends can anyone plz guide me on the exception An unhandled exception of type 'System.IndexOutOfRangeException' occurred in system.windows.forms.dll Additional information: Index was outside the bounds of the array. heres the code that gives me the exception int count=4; int[] indice = new int[count]; MessageBox.Show(count.ToString()); for(int i=0;i<--Exception return indice; plz reply quickly

    C Offline
    C Offline
    chravisankar
    wrote on last edited by
    #2

    can you tell me what is this? for(int i=0;i indice[i] = TableListBox.CheckedIndices[i];<--Exception

    S 1 Reply Last reply
    0
    • S Saira Tanwir

      hi friends can anyone plz guide me on the exception An unhandled exception of type 'System.IndexOutOfRangeException' occurred in system.windows.forms.dll Additional information: Index was outside the bounds of the array. heres the code that gives me the exception int count=4; int[] indice = new int[count]; MessageBox.Show(count.ToString()); for(int i=0;i<--Exception return indice; plz reply quickly

      Q Offline
      Q Offline
      quiteSmart
      wrote on last edited by
      #3

      int count=4; int[] indice = new int[count]; MessageBox.Show(count.ToString()); for(int i=0;i indice[i] = TableListBox.CheckedIndices[i];<--Exception return indice; this is not C# coding

      J 1 Reply Last reply
      0
      • C chravisankar

        can you tell me what is this? for(int i=0;i indice[i] = TableListBox.CheckedIndices[i];<--Exception

        S Offline
        S Offline
        Saira Tanwir
        wrote on last edited by
        #4

        sorry about that i copied the incorrect code. the for loop looks like this int count=4; int[] indice = new int[count]; for(int i=0;i<count;i++) { indice[i] = TableListBox.CheckedIndices[i]; } return indice; TableList Box is a CheckedListBox. what this loop does is takes the item on the selected index of the list box and stores it in another array.

        C Q 2 Replies Last reply
        0
        • S Saira Tanwir

          sorry about that i copied the incorrect code. the for loop looks like this int count=4; int[] indice = new int[count]; for(int i=0;i<count;i++) { indice[i] = TableListBox.CheckedIndices[i]; } return indice; TableList Box is a CheckedListBox. what this loop does is takes the item on the selected index of the list box and stores it in another array.

          C Offline
          C Offline
          chravisankar
          wrote on last edited by
          #5

          check the size of TableListBox.it should not be greater than count

          S 1 Reply Last reply
          0
          • C chravisankar

            check the size of TableListBox.it should not be greater than count

            S Offline
            S Offline
            Saira Tanwir
            wrote on last edited by
            #6

            the size property of the listbox just gives its width and height. what has that got to do with the exception??

            C 1 Reply Last reply
            0
            • S Saira Tanwir

              the size property of the listbox just gives its width and height. what has that got to do with the exception??

              C Offline
              C Offline
              chravisankar
              wrote on last edited by
              #7

              i am not talking about the physical size. i am talking about the count. check during run time.just place a brek point in the for loop and see whether TableList[i] is not greater than TableList[count]. right??

              1 Reply Last reply
              0
              • S Saira Tanwir

                sorry about that i copied the incorrect code. the for loop looks like this int count=4; int[] indice = new int[count]; for(int i=0;i<count;i++) { indice[i] = TableListBox.CheckedIndices[i]; } return indice; TableList Box is a CheckedListBox. what this loop does is takes the item on the selected index of the list box and stores it in another array.

                Q Offline
                Q Offline
                quiteSmart
                wrote on last edited by
                #8

                I believe that your error is that there is less than 4 checked items in the Table listBox so when the compiler tries to go to (for example) index 4 it is not found and it is out of range. try knowing how many items are checked before you initialize the other array and u do the for loop. you can do this int count = TableListBox.CheckedIndices.Count; and continue the rest of your code

                S 1 Reply Last reply
                0
                • Q quiteSmart

                  I believe that your error is that there is less than 4 checked items in the Table listBox so when the compiler tries to go to (for example) index 4 it is not found and it is out of range. try knowing how many items are checked before you initialize the other array and u do the for loop. you can do this int count = TableListBox.CheckedIndices.Count; and continue the rest of your code

                  S Offline
                  S Offline
                  Saira Tanwir
                  wrote on last edited by
                  #9

                  i've already checked that the number of items selected in the listbox are 4 through int count=TableListBox.CheckedIndices.Count; approach. but still it doesn't work. Any other suggestions???

                  Q C 2 Replies Last reply
                  0
                  • Q quiteSmart

                    int count=4; int[] indice = new int[count]; MessageBox.Show(count.ToString()); for(int i=0;i indice[i] = TableListBox.CheckedIndices[i];<--Exception return indice; this is not C# coding

                    J Offline
                    J Offline
                    J4amieC
                    wrote on last edited by
                    #10

                    Why do you say that. (NB. the forum cut off everything after "for(int i=0;i" the line should have read "for(int i=0;i<count;i++)")

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

                    Q 1 Reply Last reply
                    0
                    • J J4amieC

                      Why do you say that. (NB. the forum cut off everything after "for(int i=0;i" the line should have read "for(int i=0;i<count;i++)")

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

                      Q Offline
                      Q Offline
                      quiteSmart
                      wrote on last edited by
                      #11

                      It is a good notice from you X| But i didn't know that the forum cut that out. Why don't u try to help that poor guy instead of loosing your time on unrelavent comments

                      1 Reply Last reply
                      0
                      • S Saira Tanwir

                        i've already checked that the number of items selected in the listbox are 4 through int count=TableListBox.CheckedIndices.Count; approach. but still it doesn't work. Any other suggestions???

                        Q Offline
                        Q Offline
                        quiteSmart
                        wrote on last edited by
                        #12

                        Sorry, i cann't see any error in the code you are providing. Try providing us more information and maybe we can help

                        S 1 Reply Last reply
                        0
                        • Q quiteSmart

                          Sorry, i cann't see any error in the code you are providing. Try providing us more information and maybe we can help

                          S Offline
                          S Offline
                          Saira Tanwir
                          wrote on last edited by
                          #13

                          can this be due to the .Net Platform being corrupt? i'm really confused:confused::~

                          Q C 2 Replies Last reply
                          0
                          • S Saira Tanwir

                            can this be due to the .Net Platform being corrupt? i'm really confused:confused::~

                            Q Offline
                            Q Offline
                            quiteSmart
                            wrote on last edited by
                            #14

                            Is it the first time you develop on this Platform?

                            1 Reply Last reply
                            0
                            • S Saira Tanwir

                              can this be due to the .Net Platform being corrupt? i'm really confused:confused::~

                              C Offline
                              C Offline
                              Christian Graus
                              wrote on last edited by
                              #15

                              The odds of that are close to zero.

                              Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog

                              S 1 Reply Last reply
                              0
                              • S Saira Tanwir

                                hi friends can anyone plz guide me on the exception An unhandled exception of type 'System.IndexOutOfRangeException' occurred in system.windows.forms.dll Additional information: Index was outside the bounds of the array. heres the code that gives me the exception int count=4; int[] indice = new int[count]; MessageBox.Show(count.ToString()); for(int i=0;i<--Exception return indice; plz reply quickly

                                C Offline
                                C Offline
                                Christian Graus
                                wrote on last edited by
                                #16

                                Saira Tanwir wrote:

                                plz reply quickly

                                This really bugs me. You're getting help for free, people will reply when they reply. No-one is 'on duty' int count=4; int[] indice = new int[count]; MessageBox.Show(count.ToString()); for(int i=0;i

                                S 1 Reply Last reply
                                0
                                • C Christian Graus

                                  The odds of that are close to zero.

                                  Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog

                                  S Offline
                                  S Offline
                                  Saira Tanwir
                                  wrote on last edited by
                                  #17

                                  thankyou for clearing that up and YES this is my first project on this platform

                                  1 Reply Last reply
                                  0
                                  • C Christian Graus

                                    Saira Tanwir wrote:

                                    plz reply quickly

                                    This really bugs me. You're getting help for free, people will reply when they reply. No-one is 'on duty' int count=4; int[] indice = new int[count]; MessageBox.Show(count.ToString()); for(int i=0;i

                                    S Offline
                                    S Offline
                                    Saira Tanwir
                                    wrote on last edited by
                                    #18

                                    well guys the problem is still there:^) But thanks anyway for all thee help and ur precious time regards:rose: Saira

                                    C 1 Reply Last reply
                                    0
                                    • S Saira Tanwir

                                      well guys the problem is still there:^) But thanks anyway for all thee help and ur precious time regards:rose: Saira

                                      C Offline
                                      C Offline
                                      Christian Graus
                                      wrote on last edited by
                                      #19

                                      Well, it's a really simple one. You need to step through the code and see what's happening, if you need to do that, to be convinced that hard coding the number 4 when the list could have less items is a bad idea. You'll see that it blows up because there are not four items checked. Nothing else makes sense.

                                      Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog

                                      1 Reply Last reply
                                      0
                                      • S Saira Tanwir

                                        i've already checked that the number of items selected in the listbox are 4 through int count=TableListBox.CheckedIndices.Count; approach. but still it doesn't work. Any other suggestions???

                                        C Offline
                                        C Offline
                                        chravisankar
                                        wrote on last edited by
                                        #20

                                        paste the full code i will test and let u know

                                        1 Reply Last reply
                                        0
                                        Reply
                                        • Reply as topic
                                        Log in to reply
                                        • Oldest to Newest
                                        • Newest to Oldest
                                        • Most Votes


                                        • Login

                                        • Don't have an account? Register

                                        • Login or register to search.
                                        • First post
                                          Last post
                                        0
                                        • Categories
                                        • Recent
                                        • Tags
                                        • Popular
                                        • World
                                        • Users
                                        • Groups