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Cycling through all GUI Objects within a form

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  • K Offline
    K Offline
    karoitay
    wrote on last edited by
    #1

    Hi, Given a form I need to be able to collect the Name Property of all the GUI Objects within it. - Not Only Nested Controls, But also for example tabPages, ToolStripMenuItems and such. How can this be done? Thanks. (.NET 2.0)

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    0
    • K karoitay

      Hi, Given a form I need to be able to collect the Name Property of all the GUI Objects within it. - Not Only Nested Controls, But also for example tabPages, ToolStripMenuItems and such. How can this be done? Thanks. (.NET 2.0)

      P Offline
      P Offline
      Pete OHanlon
      wrote on last edited by
      #2

      Each object contains the Controls property, which contain all of the controls that they constrain, so this might be a place to start. Hint - this can be done recursively.

      Deja View - the feeling that you've seen this post before.

      C U 2 Replies Last reply
      0
      • P Pete OHanlon

        Each object contains the Controls property, which contain all of the controls that they constrain, so this might be a place to start. Hint - this can be done recursively.

        Deja View - the feeling that you've seen this post before.

        C Offline
        C Offline
        Colin Angus Mackay
        wrote on last edited by
        #3

        Pete O`Hanlon wrote:

        Each object contains the Controls property

        Brilliant minds... :-D


        Upcoming FREE developer events: * Glasgow: db4o: An Embeddable Database Engine for Object-Oriented Environments, Mock Objects, SQL Server CLR Integration, Reporting Services ... My website

        P K 2 Replies Last reply
        0
        • K karoitay

          Hi, Given a form I need to be able to collect the Name Property of all the GUI Objects within it. - Not Only Nested Controls, But also for example tabPages, ToolStripMenuItems and such. How can this be done? Thanks. (.NET 2.0)

          C Offline
          C Offline
          Colin Angus Mackay
          wrote on last edited by
          #4

          Iterate over the Controls collection.


          Upcoming FREE developer events: * Glasgow: db4o: An Embeddable Database Engine for Object-Oriented Environments, Mock Objects, SQL Server CLR Integration, Reporting Services ... My website

          K 1 Reply Last reply
          0
          • K karoitay

            Hi, Given a form I need to be able to collect the Name Property of all the GUI Objects within it. - Not Only Nested Controls, But also for example tabPages, ToolStripMenuItems and such. How can this be done? Thanks. (.NET 2.0)

            U Offline
            U Offline
            Urs Enzler
            wrote on last edited by
            #5

            by looping through all children of the MainForm and their children and so on. You can use either recursion or a Stack algorithm. To get the children use the Controls property of a Control. To speed things up use property HasChildren to check if a Control has childrens.

            -^-^-^-^-^- no risk no funk ................... please vote ------>

            1 Reply Last reply
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            • C Colin Angus Mackay

              Pete O`Hanlon wrote:

              Each object contains the Controls property

              Brilliant minds... :-D


              Upcoming FREE developer events: * Glasgow: db4o: An Embeddable Database Engine for Object-Oriented Environments, Mock Objects, SQL Server CLR Integration, Reporting Services ... My website

              P Offline
              P Offline
              Pete OHanlon
              wrote on last edited by
              #6

              Colin Angus Mackay wrote:

              Brilliant minds...

              Sometimes our level of genius is quite embarrassing.:-D

              Deja View - the feeling that you've seen this post before.

              K 1 Reply Last reply
              0
              • P Pete OHanlon

                Each object contains the Controls property, which contain all of the controls that they constrain, so this might be a place to start. Hint - this can be done recursively.

                Deja View - the feeling that you've seen this post before.

                U Offline
                U Offline
                Urs Enzler
                wrote on last edited by
                #7

                Do not forget to check the HasChildren property. Speeds things up.

                -^-^-^-^-^- no risk no funk ................... please vote ------>

                P 1 Reply Last reply
                0
                • C Colin Angus Mackay

                  Iterate over the Controls collection.


                  Upcoming FREE developer events: * Glasgow: db4o: An Embeddable Database Engine for Object-Oriented Environments, Mock Objects, SQL Server CLR Integration, Reporting Services ... My website

                  K Offline
                  K Offline
                  karoitay
                  wrote on last edited by
                  #8

                  As I said I need not cycle over the controls only. For Ex: Assuming ther is a Control Within the Form of Type - ToolStrip The ToolStrip Class has no Controls Property Its Childeren are Beeing held in a collection which can be accessed with the Items Propery - Now - to get to them I cannot do what u have all mentioned above. So... my Question Remains - how can this be done?

                  A 1 Reply Last reply
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                  • C Colin Angus Mackay

                    Pete O`Hanlon wrote:

                    Each object contains the Controls property

                    Brilliant minds... :-D


                    Upcoming FREE developer events: * Glasgow: db4o: An Embeddable Database Engine for Object-Oriented Environments, Mock Objects, SQL Server CLR Integration, Reporting Services ... My website

                    K Offline
                    K Offline
                    karoitay
                    wrote on last edited by
                    #9

                    As I said I need not cycle over the controls only. For Ex: Assuming ther is a Control Within the Form of Type - ToolStrip The ToolStrip Class has no Controls Property Its Childeren are Beeing held in a collection which can be accessed with the Items Propery - Now - to get to them I cannot do what u have all mentioned above. So... my Question Remains - how can this be done?

                    C 1 Reply Last reply
                    0
                    • P Pete OHanlon

                      Colin Angus Mackay wrote:

                      Brilliant minds...

                      Sometimes our level of genius is quite embarrassing.:-D

                      Deja View - the feeling that you've seen this post before.

                      K Offline
                      K Offline
                      karthick n mca
                      wrote on last edited by
                      #10

                      poda....................:laugh:

                      1 Reply Last reply
                      0
                      • K karoitay

                        As I said I need not cycle over the controls only. For Ex: Assuming ther is a Control Within the Form of Type - ToolStrip The ToolStrip Class has no Controls Property Its Childeren are Beeing held in a collection which can be accessed with the Items Propery - Now - to get to them I cannot do what u have all mentioned above. So... my Question Remains - how can this be done?

                        C Offline
                        C Offline
                        Colin Angus Mackay
                        wrote on last edited by
                        #11

                        Then you will have to use reflection to determine if you need to recurse into a Controls collection or an Items collection.


                        Upcoming FREE developer events: * Glasgow: db4o: An Embeddable Database Engine for Object-Oriented Environments, Mock Objects, SQL Server CLR Integration, Reporting Services ... My website

                        K M U 3 Replies Last reply
                        0
                        • K karoitay

                          As I said I need not cycle over the controls only. For Ex: Assuming ther is a Control Within the Form of Type - ToolStrip The ToolStrip Class has no Controls Property Its Childeren are Beeing held in a collection which can be accessed with the Items Propery - Now - to get to them I cannot do what u have all mentioned above. So... my Question Remains - how can this be done?

                          A Offline
                          A Offline
                          Anthony Mushrow
                          wrote on last edited by
                          #12

                          Iterate like people have said, but check the type of the object, and run a separate peice of code to get its items collection, or its child controls etc. Whatever you do, im pretty sure there isn't some simple function you can use, its gonna take quite the chunk of code, and your probably gonna have to write it all yourself.

                          K 1 Reply Last reply
                          0
                          • C Colin Angus Mackay

                            Then you will have to use reflection to determine if you need to recurse into a Controls collection or an Items collection.


                            Upcoming FREE developer events: * Glasgow: db4o: An Embeddable Database Engine for Object-Oriented Environments, Mock Objects, SQL Server CLR Integration, Reporting Services ... My website

                            K Offline
                            K Offline
                            karoitay
                            wrote on last edited by
                            #13

                            I Have just recently heard about reflection and I'm quite not familiar with the subject. So... can you please hand me a little piece of code to show how can this be done so I will not have to read all about reflection. ( I'm a litle busy the next days any I need this job to be done as quickly as possible ). Thanks.

                            J C 2 Replies Last reply
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                            • C Colin Angus Mackay

                              Then you will have to use reflection to determine if you need to recurse into a Controls collection or an Items collection.


                              Upcoming FREE developer events: * Glasgow: db4o: An Embeddable Database Engine for Object-Oriented Environments, Mock Objects, SQL Server CLR Integration, Reporting Services ... My website

                              M Offline
                              M Offline
                              Martin 0
                              wrote on last edited by
                              #14

                              Don't you think, that this would bring a lot of useless matches (ListBox.Items). I think it would be easier to check out how many control classes don't match "Controls", and do a typecheck ("as") at them!

                              All the best, Martin

                              C 1 Reply Last reply
                              0
                              • A Anthony Mushrow

                                Iterate like people have said, but check the type of the object, and run a separate peice of code to get its items collection, or its child controls etc. Whatever you do, im pretty sure there isn't some simple function you can use, its gonna take quite the chunk of code, and your probably gonna have to write it all yourself.

                                K Offline
                                K Offline
                                karthick n mca
                                wrote on last edited by
                                #15

                                you go to hell.............

                                D 1 Reply Last reply
                                0
                                • M Martin 0

                                  Don't you think, that this would bring a lot of useless matches (ListBox.Items). I think it would be easier to check out how many control classes don't match "Controls", and do a typecheck ("as") at them!

                                  All the best, Martin

                                  C Offline
                                  C Offline
                                  Colin Angus Mackay
                                  wrote on last edited by
                                  #16

                                  Martin# wrote:

                                  Don't you think, that this would bring a lot of useless matches (ListBox.Items).

                                  Since I don't know what the overall purpose is I can't say if that would bring lots of useless matches or not. It might do. It might not.


                                  Upcoming FREE developer events: * Glasgow: db4o: An Embeddable Database Engine for Object-Oriented Environments, Mock Objects, SQL Server CLR Integration, Reporting Services ... My website

                                  K 1 Reply Last reply
                                  0
                                  • C Colin Angus Mackay

                                    Then you will have to use reflection to determine if you need to recurse into a Controls collection or an Items collection.


                                    Upcoming FREE developer events: * Glasgow: db4o: An Embeddable Database Engine for Object-Oriented Environments, Mock Objects, SQL Server CLR Integration, Reporting Services ... My website

                                    U Offline
                                    U Offline
                                    Urs Enzler
                                    wrote on last edited by
                                    #17

                                    I wouldn't use reflection. I'd just test if the current control is of a type with a property Controls or whether it is of for example type ToolStrip: Or the make the code more readable, introduce several overloaded methods that take the different types as a parameter (one overload for control, one for toolstrip, ....) And call them recursively.

                                    -^-^-^-^-^- no risk no funk ................... please vote ------>

                                    1 Reply Last reply
                                    0
                                    • U Urs Enzler

                                      Do not forget to check the HasChildren property. Speeds things up.

                                      -^-^-^-^-^- no risk no funk ................... please vote ------>

                                      P Offline
                                      P Offline
                                      PIEBALDconsult
                                      wrote on last edited by
                                      #18

                                      That may depend on how the enumeration is implemented.

                                      1 Reply Last reply
                                      0
                                      • K karthick n mca

                                        you go to hell.............

                                        D Offline
                                        D Offline
                                        Dave Kreskowiak
                                        wrote on last edited by
                                        #19

                                        Whould you mind explaining yourself?? Undefeated's explanation and suggestion is perfectly valid.

                                        A guide to posting questions on CodeProject[^]
                                        Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic
                                             2006, 2007

                                        D 1 Reply Last reply
                                        0
                                        • C Colin Angus Mackay

                                          Martin# wrote:

                                          Don't you think, that this would bring a lot of useless matches (ListBox.Items).

                                          Since I don't know what the overall purpose is I can't say if that would bring lots of useless matches or not. It might do. It might not.


                                          Upcoming FREE developer events: * Glasgow: db4o: An Embeddable Database Engine for Object-Oriented Environments, Mock Objects, SQL Server CLR Integration, Reporting Services ... My website

                                          K Offline
                                          K Offline
                                          karoitay
                                          wrote on last edited by
                                          #20

                                          The Overall purpose is to have a dictionary that will map a Gui object to a bitmask to determine its accessibility to each user of the application

                                          1 Reply Last reply
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