How can I change the subobject in a composite control arraylist property to be editable in the design mode? RSS

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  lior3790

  Member

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  How can I change the subobject in a composite control arraylist property to be editable in the de...

  Jan 04, 2007 09:24 AM|LINK

  Hi,

  i have created a composite control and i give to one of the properties an Arraylist value which i intend to fill with a struct that i will define.

  but the prob is when i choose to add in the design mode i get into the collection System.Object that cann't be defined or edit.

   what is the solution?

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  Jonathan Dav...

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  234 Posts

  Re: How can I change the subobject in a composite control arraylist property to be editable in th...

  Jan 04, 2007 02:58 PM|LINK

  class MyCollection : ArrayList<myItemType>
  {
  }
  
  class MyControl : WebControl
  {
  
      [Editor(typeof(CollectionEditor), typeof(UITypeEditor))]
      public MyCollection CollectionPropertyName
      {
          get;
          set;
      }
  }
  Does your team use the VSIP toolkit or maybe have the bulk of your app factored down to patterns and generators? Do you need in-house controls that will make your current vendors blush? If so, we need to talk.
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  lior3790

  Member

  40 Points

  25 Posts

  Re: How can I change the subobject in a composite control arraylist property to be editable in th...

  Jan 04, 2007 03:25 PM|LINK

  nice, it gave me the option to edit

  but i get only two fields to edit: capacity   &   count

  and dont take any field that required

  here is the code

  public class clmn : List
      {
          public string colmnDataName;
          public string colmnDesignName;
          public bool bind;
          public clmn() { }
          public clmn(string s1, string s2, bool b1)
          {
              colmnDataName = s1;
              colmnDesignName = s2;
              bind = b1;
  
  
          }
  
  
      }
  
  
      [DefaultProperty("Text")]
      [ToolboxData("&lt;{0}:RecListControl runat=server></{0}:RecListControl>")]
      public class RecListControl : CompositeControl
      {
  List clm = new List();
  
  
  
  
          [Bindable(true)]
          [Category("Options")]
          [Description("The Columns")]
          [Editor(typeof(CollectionEditor), typeof(UITypeEditor))]
          [PersistenceMode(PersistenceMode.InnerProperty)]
          [MergableProperty(false)]
          [DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Content)]
          [NotifyParentProperty(true)]
          public clmn SetColumns
          {
              get
              {
  
  
                  EnsureChildControls();
                  //if (((object)ViewState["Columns"]) == null)
                  //    return clmn;
                  return ((clmn) ViewState["Columns"]);
              }
              set
              {
                  
  
                  EnsureChildControls();
                                  
  
                  clm.Add(value);
                  ViewState["Columns"] = value;
  
  
              }
          }
  }

   
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  lior3790

  Member

  40 Points

  25 Posts

  Re: How can I change the subobject in a composite control arraylist property to be editable in th...

  Jan 04, 2007 03:26 PM|LINK

  nice, it gave me the option to edit

  but i get only two fields to edit: capacity   &   count

  and dont take any field that required

  here is the code

  public class clmn : List
      {
          public string colmnDataName;
          public string colmnDesignName;
          public bool bind;
          public clmn() { }
          public clmn(string s1, string s2, bool b1)
          {
              colmnDataName = s1;
              colmnDesignName = s2;
              bind = b1;
  
  
          }
  
  
      }
  
  
      [DefaultProperty("Text")]
      [ToolboxData("&lt;{0}:RecListControl runat=server></{0}:RecListControl>")]
      public class RecListControl : CompositeControl
      {
  List clm = new List();
  
  
  
  
          [Bindable(true)]
          [Category("Options")]
          [Description("The Columns")]
          [Editor(typeof(CollectionEditor), typeof(UITypeEditor))]
          [PersistenceMode(PersistenceMode.InnerProperty)]
          [MergableProperty(false)]
          [DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Content)]
          [NotifyParentProperty(true)]
          public clmn SetColumns
          {
              get
              {
  
  
                  EnsureChildControls();
                  //if (((object)ViewState["Columns"]) == null)
                  //    return clmn;
                  return ((clmn) ViewState["Columns"]);
              }
              set
              {
                  
  
                  EnsureChildControls();
                                  
  
                  clm.Add(value);
                  ViewState["Columns"] = value;
  
  
              }
          }
  }

   
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  Jonathan Dav...

  Participant

  1048 Points

  234 Posts

  Re: How can I change the subobject in a composite control arraylist property to be editable in th...

  Jan 04, 2007 04:30 PM|LINK

  change to
  

   

      public class clmn   
      {
          public string colmnDataName;
          public string colmnDesignName;
          public bool bind;
          public clmn() { }
          public clmn(string s1, string s2, bool b1)
          {
              colmnDataName = s1;
              colmnDesignName = s2;
              bind = b1;
  
          }
  
      }
  
      public class clmnCollection : List
      {
      }
  
      [DefaultProperty("Text")]
      [ToolboxData("&lt;{0}:RecListControl runat=server></{0}:RecListControl>")]
      public class RecListControl : CompositeControl
      { 
          clmnCollection _Columns = null;
  
  
          [Bindable(true)]
          [Category("Options")]
          [Description("The Columns")]
          [Editor(typeof(CollectionEditor), typeof(UITypeEditor))]
          [PersistenceMode(PersistenceMode.InnerProperty)]
          [MergableProperty(false)]
          [DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Content)]
          [NotifyParentProperty(true)]
          public clmnCollection Columns
          {
              get
              {
  
                  EnsureChildControls();
                  return _Columns ;
              }
              set
              {
                  
                  EnsureChildControls();
                                  
                  _Columns = value;
                  ViewState["Columns"] = value;
  
              }
          }
  }

  Does your team use the VSIP toolkit or maybe have the bulk of your app factored down to patterns and generators? Do you need in-house controls that will make your current vendors blush? If so, we need to talk.
• • Reply
  

  Jonathan Dav...

  Participant

  1048 Points

  234 Posts

  Re: How can I change the subobject in a composite control arraylist property to be editable in th...

  Jan 04, 2007 04:32 PM|LINK

  the sample above should have said:
  
  
  clmnCollection : System.Collections.Generic.List < clmn >
  Does your team use the VSIP toolkit or maybe have the bulk of your app factored down to patterns and generators? Do you need in-house controls that will make your current vendors blush? If so, we need to talk.
• • Reply
  

  lior3790

  Member

  40 Points

  25 Posts

  Re: How can I change the subobject in a composite control arraylist property to be editable in th...

  Jan 07, 2007 12:14 PM|LINK

  I got a correct answer from Microsoft MSDN.

  Here is the solution:

  You need to encapsulate the member variables in Properties:

      public class clmn : List<clmn>

      {

          private string colmnDataName;

          public string ColmnDataName

          {

              get { return colmnDataName; }

              set { colmnDataName = value; }

          }

          private string colmnDesignName;

          public string ColmnDesignName

          {

              get { return colmnDesignName; }

              set { colmnDesignName = value; }

          }

          private bool bind;

          public bool Bind

          {

              get { return bind; }

              set { bind = value; }

          }

          public clmn() { }

          public clmn(string s1, string s2, bool b1)

          {

              colmnDataName = s1;

              colmnDesignName = s2;

              bind = b1;

          }

      }

  This is because the type editor uses Reflection to discover bindable 

  properties, not public member variables.

  Hope this helps.

  Thank you Microsoft