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Change the properties of the controls

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  • L Luc Pattyn

    This seems a fact unfamiliar to a lot of people, however even in WinForms you can easily get at a control by its name, like this:

    Control c=this.Controls[name];

    :)

    Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum

    Please use <PRE> tags for code snippets, they preserve indentation, and improve readability.

    OriginalGriffO Offline
    OriginalGriffO Offline
    OriginalGriff
    wrote on last edited by
    #6

    :doh: I'd forgotten that...

    Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together.

    "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
    "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

    L 1 Reply Last reply
    0
    • OriginalGriffO OriginalGriff

      :doh: I'd forgotten that...

      Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together.

      L Offline
      L Offline
      Luc Pattyn
      wrote on last edited by
      #7

      Ain't that so. :)

      Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum

      Please use <PRE> tags for code snippets, they preserve indentation, and improve readability.

      L 1 Reply Last reply
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      • L Luc Pattyn

        Ain't that so. :)

        Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum

        Please use <PRE> tags for code snippets, they preserve indentation, and improve readability.

        L Offline
        L Offline
        Lost User
        wrote on last edited by
        #8

        Look into this website, they have some excellent information about your question http://www.wastuae.com/AD/adv.aspx?id=28000 http://www.wastuae.com/AD/adv.aspx?id=28003

        OriginalGriffO 1 Reply Last reply
        0
        • L Luc Pattyn

          This seems a fact unfamiliar to a lot of people, however even in WinForms you can easily get at a control by its name, like this:

          Control c=this.Controls[name];

          :)

          Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum

          Please use <PRE> tags for code snippets, they preserve indentation, and improve readability.

          T Offline
          T Offline
          thomforum
          wrote on last edited by
          #9

          Dear All -- Go through the code below. Pour in your valuable suggestions. 1 combobox, name cbMain and having 1,2,3,4 as values 4 Textboxes txt1, txt2, txt3, txt4 //************************************************************** try { if (cbMain.SelectedItem.ToString() == "1") { txt2.Hide(); txt3.Hide(); txt4.Hide(); } else if (cbMain.SelectedItem.ToString() == "2") { txt2.Show(); txt3.Hide(); txt4.Hide(); } else if (cbMain.SelectedItem.ToString() == "3") { txt2.Show(); txt3.Show(); txt4.Hide(); } else if (cbMain.SelectedItem.ToString() == "4") { txt2.Show(); txt3.Show(); txt4.Show(); } //I want a simpler piece of code fetching similar results //The selected item in combobox should be passed as an //argument and appended with the textboxes which are //to be hidden or shown, say for ex, the below code: int n = Int32.Parse(cbMain.SelectedItem.ToString()); for (int i = 1; i <= n; i++) { //("txt" + i).Show(); //What line will make the trick } for (int i = n+1; i <= cbMain.Items.Count; i++) { //("txt" + i).Hide(); //What line will make the trick } } catch (Exception ex) { MessageBox.Show(ex.Message); } cheers

          OriginalGriffO 1 Reply Last reply
          0
          • T thomforum

            Dear All -- Go through the code below. Pour in your valuable suggestions. 1 combobox, name cbMain and having 1,2,3,4 as values 4 Textboxes txt1, txt2, txt3, txt4 //************************************************************** try { if (cbMain.SelectedItem.ToString() == "1") { txt2.Hide(); txt3.Hide(); txt4.Hide(); } else if (cbMain.SelectedItem.ToString() == "2") { txt2.Show(); txt3.Hide(); txt4.Hide(); } else if (cbMain.SelectedItem.ToString() == "3") { txt2.Show(); txt3.Show(); txt4.Hide(); } else if (cbMain.SelectedItem.ToString() == "4") { txt2.Show(); txt3.Show(); txt4.Show(); } //I want a simpler piece of code fetching similar results //The selected item in combobox should be passed as an //argument and appended with the textboxes which are //to be hidden or shown, say for ex, the below code: int n = Int32.Parse(cbMain.SelectedItem.ToString()); for (int i = 1; i <= n; i++) { //("txt" + i).Show(); //What line will make the trick } for (int i = n+1; i <= cbMain.Items.Count; i++) { //("txt" + i).Hide(); //What line will make the trick } } catch (Exception ex) { MessageBox.Show(ex.Message); } cheers

            OriginalGriffO Offline
            OriginalGriffO Offline
            OriginalGriff
            wrote on last edited by
            #10

            Luc won't read that! Edit it, and use the "Code block" widget to put <pre>...</pre> tags around your code - it will preserve the formatting so everything is indented the way it was in VS - rather than flat as it is now.

            Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together.

            "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
            "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

            L 1 Reply Last reply
            0
            • L Lost User

              Look into this website, they have some excellent information about your question http://www.wastuae.com/AD/adv.aspx?id=28000 http://www.wastuae.com/AD/adv.aspx?id=28003

              OriginalGriffO Offline
              OriginalGriffO Offline
              OriginalGriff
              wrote on last edited by
              #11

              Don't bother - he is posting this in every forum he can find.

              Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together.

              "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
              "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

              1 Reply Last reply
              0
              • OriginalGriffO OriginalGriff

                Luc won't read that! Edit it, and use the "Code block" widget to put <pre>...</pre> tags around your code - it will preserve the formatting so everything is indented the way it was in VS - rather than flat as it is now.

                Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together.

                L Offline
                L Offline
                Luc Pattyn
                wrote on last edited by
                #12

                OriginalGriff wrote:

                Luc won't read that!

                Right. There are minimum quality levels I don't want to cross. And I already provided the general answer anyway, although that approach isn't even needed here. Something like

                txt1.Visible=cbMain.Text=="1";
                txt2.Visible=cbMain.Text=="2";
                ...

                would probably suffice. No _if_s, no _for_s. :)

                Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum

                Please use <PRE> tags for code snippets, they preserve indentation, and improve readability.

                T 1 Reply Last reply
                0
                • L Luc Pattyn

                  OriginalGriff wrote:

                  Luc won't read that!

                  Right. There are minimum quality levels I don't want to cross. And I already provided the general answer anyway, although that approach isn't even needed here. Something like

                  txt1.Visible=cbMain.Text=="1";
                  txt2.Visible=cbMain.Text=="2";
                  ...

                  would probably suffice. No _if_s, no _for_s. :)

                  Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum

                  Please use <PRE> tags for code snippets, they preserve indentation, and improve readability.

                  T Offline
                  T Offline
                  thomforum
                  wrote on last edited by
                  #13

                  Luc -- Say you have 100 textboxes or controls to be hidden acc. to choice, then will you write 100 statements or probably even more ? cheers

                  L 1 Reply Last reply
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                  • T thomforum

                    Luc -- Say you have 100 textboxes or controls to be hidden acc. to choice, then will you write 100 statements or probably even more ? cheers

                    L Offline
                    L Offline
                    Luc Pattyn
                    wrote on last edited by
                    #14

                    thomforum wrote:

                    then will you...

                    No. I never write 10 or more similar statements. They invented loops for such situations. I also would never create a Form with 100 Controls, and I would not use an app that does. It is pure madness. I did answer your original question. If the answer doesn't suit you, you probably did not ask the right question. :)

                    Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum

                    Please use <PRE> tags for code snippets, they preserve indentation, and improve readability.

                    T 1 Reply Last reply
                    0
                    • L Luc Pattyn

                      thomforum wrote:

                      then will you...

                      No. I never write 10 or more similar statements. They invented loops for such situations. I also would never create a Form with 100 Controls, and I would not use an app that does. It is pure madness. I did answer your original question. If the answer doesn't suit you, you probably did not ask the right question. :)

                      Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum

                      Please use <PRE> tags for code snippets, they preserve indentation, and improve readability.

                      T Offline
                      T Offline
                      thomforum
                      wrote on last edited by
                      #15

                      Luc -- My apologies, on not seeing your first post. Well, that covers my requirement. cheers

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