uitypeeditor - C# UI Design time Type Editor for Lists -


this first time working type editors, have created type editor , managed access @ design time, however, not behave way want to, in fact, think nothing @ all. appreciate if can take time , guide me. thanks!

my code typeconverter

 public class browselayouttypeconvertor : typeconverter  {     public browselayouttypeconvertor()     {                             }      public override bool getpropertiessupported(itypedescriptorcontext context)     {         return true;     }      public override propertydescriptorcollection getproperties(itypedescriptorcontext context, object value, attribute[] attributes)     {         return typedescriptor.getproperties(typeof(browselayoutcolumns));     } }

my code browselayoutcolumns

[typeconverter(typeof(browselayouttypeconvertor))] public class browselayoutcolumns {           private string _columnname;             public string columnname     {         => _columnname;         set         {             if (null == value) return;             _columnname = value;         }     }      private string _bindingfield;         public string bindingfield     {         => _bindingfield;         set         {             if (null != value)             {                 _bindingfield = value;             }         }     }                 public override string tostring()     {         return "columns";     } }

this how use it:

class mybrowsefrm<tentity>:form tentity:class {     #region myproperties      private list<browselayoutcolumns> _browselayoutcolumns = new list<browselayoutcolumns>();      [designerserializationvisibility(designerserializationvisibility.content)]     [category("design")]     public list<browselayoutcolumns> browselayoutcolumns     {         => _browselayoutcolumns;         set         {                  _browselayoutcolumns = value;                 myrequerygridview();         }     } }    private void myrequerygridview()     {          mygridview1.rows.clear();          foreach (var column in _browselayoutcolumns)         {             mygridview1.columns.add(column.bindingfield, column.columnname);         }          mygridview1.refresh();     }

i have 2 problems here

1- following error.

2- if restart visual studio, can set values yet no visual changes appear happen on form enter image description here

what missing here? appreciated! thanks!


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