My Smart Tag is erasing my internal Content RSS

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  TimHays

  Member

  43 Points

  14 Posts

  My Smart Tag is erasing my internal Content

  Dec 09, 2011 05:33 PM|LINK

  <div>I am using ASP.Net with C# 4.0.  I created a custom gridview control that has the following signature</div> <div> </div> <div>

  [Designer(typeof(CRMGridviewDesigner))]
      [ParseChildren(true, "GridFields")]
      public class CRMGridview : CompositeDataBoundControl, IPostBackEventHandler

  </div> <div> </div> <div>I am using a Designer Class for the IDE.  It has the following signature</div> <div> </div> <div>

  public class CRMGridviewDesigner : ControlDesigner

  </div> <div> </div> <div>It exposes the Action Lists via a public property as follows:</div> <div> </div> <div>

          public override DesignerActionListCollection ActionLists
          {
              get
              {
                  if (_ActionList == null)
                  {
                      _ActionList = new DesignerActionListCollection();
                      _ActionList.Add(new CRMGridviewActionList((CRMGridview)Component, this));
                  }
                  return _ActionList;
              }
          }
  

  </div> <div> </div> <div>Below is my Action List class.</div> <div> </div> <div>

      public class CRMGridviewActionList : DesignerActionList
      {
          #region Constructor
          internal CRMGridviewActionList(CRMGridview Ctrl, CRMGridviewDesigner Designer)
              : base(Ctrl)
          {
              _LinkedControl = Ctrl;
              _Designer = Designer;
          }
          #endregion
  
          #region Private Members
          private CRMGridview _LinkedControl;
          private CRMGridviewDesigner _Designer;
          #endregion
  
          #region Public Properties
          //Each property is a smart tag
          public string DataSourceID
          {
              get 
              { 
                  return _LinkedControl.DataSourceID; 
              }
              set 
              { 
                  GetPropertyByName("DataSourceID").SetValue(_LinkedControl, value); 
              }
  
          }
   
          public bool ShowDeleteColumn
          {
              get { return _LinkedControl.ShowDeleteColumn; }
              set { GetPropertyByName("ShowDeleteColumn").SetValue(_LinkedControl, value); }
          }
   
          public bool ShowEditColumn
          {
              get { return _LinkedControl.ShowEditColumn; }
              set { GetPropertyByName("ShowEditColumn").SetValue(_LinkedControl, value); }
          }
   
          public bool ShowOrderColumn
          {
              get 
              { 
                  return _LinkedControl.ShowOrderColumn; 
              }
              set 
              { 
                  GetPropertyByName("ShowOrderColumn").SetValue(_LinkedControl, value); 
              }
          }
  
          public SelectColumnOptions ShowSelectColumn
          {
              get 
              { 
                  return _LinkedControl.ShowSelectColumn; 
              }
              set 
              { 
                  GetPropertyByName("ShowSelectColumn").SetValue(_LinkedControl, value); 
              }
          }
  
          public bool ShowExpandColumn
          {
              get
              {
                  return _LinkedControl.ShowExpandColumn;
              }
              set
              {
                  GetPropertyByName("ShowExpandColumn").SetValue(_LinkedControl, value);
              }
          }
  
          public string ExpandFieldName
          {
              get
              {
                  return _LinkedControl.ExpandFieldName;
              }
              set
              {
                  GetPropertyByName("ExpandFieldName").SetValue(_LinkedControl, value);
              }
          }        
          #endregion
  
          #region Private Methods
          //A property cannot be set directly because other Visual Studio functions
          // have to be aware of its changes. Therefor GetPropertyName is created
          private PropertyDescriptor GetPropertyByName(string PropName)
          {
              PropertyDescriptor Prop;
              Prop = TypeDescriptor.GetProperties(_LinkedControl)[PropName];
   
              if (Prop == null)
                  throw new ArgumentException("Property not found", PropName);
              else
                  return Prop;
          }
  
          #endregion
  
          #region Public Methods
          //This function adds the smart tags and headers to the smart tag list
          public override DesignerActionItemCollection GetSortedActionItems()
          {
              DesignerActionItemCollection Items = new DesignerActionItemCollection();
   
              //Header
              Items.Add(new DesignerActionHeaderItem("Appearance"));
              Items.Add(new DesignerActionHeaderItem("Data"));
   
              //Items
              Items.Add(new DesignerActionPropertyItem("ShowDeleteColumn", "Show delete column.", "Appearance", "Show delete column"));
              Items.Add(new DesignerActionPropertyItem("ShowEditColumn", "Show Edit column.", "Appearance", "Show Edit column"));
              Items.Add(new DesignerActionPropertyItem("ShowOrderColumn", "Show Order column.", "Appearance", "Show Order column"));
              Items.Add(new DesignerActionPropertyItem("ShowSelectColumn", "Show select column", "Appearance", "Show select column"));
              Items.Add(new DesignerActionPropertyItem("ShowExpandColumn", "Show expand column", "Appearance", "Show expand column"));
  
              Items.Add(new DesignerActionPropertyItem("DataSourceID", "DataSourceID", "Data", "Link to the data control"));
              Items.Add(new DesignerActionPropertyItem("ExpandFieldName", "Expanded Row Field Name", "Data", "Expanded Row Field Name"));
  
              return Items;
          }
          #endregion
      }
  

  </div> <div></div> <div>The smart tag works, but when I use it to edit my control.  I lose all my interior markup.  Like my column data, etc.  I know I am missing something but I can't seem to find what.</div> <div> </div> <div>Any help is appreciated.</div>
• • Reply
  

  Decker Dong ...

  All-Star

  118619 Points

  18779 Posts

  Re: My Smart Tag is erasing my internal Content

  Dec 11, 2011 02:08 AM|LINK

  Hello：）

  In my mind，I think you should override the CreateChildControl event by initialize the array and set ChildControlsCreated=True。This won't let you create controls again and again。Sample looks like this below：

   [Designer(typeof(CRMGridviewDesigner))]
      [ParseChildren(true, "GridFields")]
      public class CRMGridview : CompositeDataBoundControl, IPostBackEventHandler
  {
      private CRMGridviewActionList_ActionList=null;
  
       public override DesignerActionListCollection ActionLists
          {
              get
              {
                  if (_ActionList == null)
                  {
                      _ActionList.Add(new CRMGridviewActionList((CRMGridview)Component, this));
                  }
                  return _ActionList;
              }
          }
  
        ……………………
  
      

  protected override void CreateChildControls()
          {

                       _ActionList = new DesignerActionListCollection();
                       ……
          }

  
  
  }

  • Marked as answer by decker dong - msft on Dec 15, 2011 02:16 AM
• • Reply
  

  TimHays

  Member

  43 Points

  14 Posts

  Re: My Smart Tag is erasing my internal Content

  Dec 12, 2011 11:39 AM|LINK

  Thanks for the response.

   

  I don't see in your code where you are setting "ChildControlsCreated=True".

• • Reply
  

  Decker Dong ...

  All-Star

  118619 Points

  18779 Posts

  Re: My Smart Tag is erasing my internal Content

  Dec 13, 2011 12:22 AM|LINK

  TimHays

  I don't see in your code where you are setting "ChildControlsCreated=True".

  In the "protected override void CreateChildControls()"——this event。

  Best reguards！