After some debugging, I found this.

At the line of code shown below, value of

When SF.NET try to convertvalue, "-1" cant be converted to GUID. Does lstControl..TopMostItem.TopMostValue always been defaulted to "-1"? Can it be changed?

I have retest this issue. I found that, after I set combo - Business Object, code is generated to designer.cs.

However, if I try to reconfigure the same search field, the UI unable to get my Business Object, and show blank in business object type, method to execute and display field.

Any ideas? I can use the same BO in data entry form without any problem.

I hit error below if I set a GUID field as browse search field. This search field is also set to use combobox - Business Object.

Please advice.

Thank you

InvalidOperationException
 The input value could not be converted to the output type.
FormatException
 Guid should contain 32 digits with 4 dashes (xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx).

Source     : MicroFour StrataFrame Base

Stack Trace:
   at System.Guid..ctor(String g)
   at MicroFour.StrataFrame.Data.ObjectConverter.ConvertValue(Object InputValue, Type InputType, Type OutputType, String FormatString)
   at MicroFour.StrataFrame.Data.ObjectConverter.ConvertValue(Object InputValue, Type OutputType)
   at MicroFour.StrataFrame.UI.Windows.Forms.ListControl.PopulateComboFromBusinessObject(IListControl lstControl, Object[] Parameters)
   at MicroFour.StrataFrame.UI.Windows.Forms.ListControl.PopulateCombo(Control lstControl, Object[] Parameters)
   at MicroFour.StrataFrame.UI.Windows.Forms.ComboBox.PopulateCombo(Object[] Parameters)
   at MicroFour.StrataFrame.UI.Windows.Forms.ComboBox.Requery()
   at MicroFour.StrataFrame.UI.Windows.Forms.BrowseDialogWindow.CreateBOCombo(SearchFieldItem Item)
   at MicroFour.StrataFrame.UI.Windows.Forms.BrowseDialogWindow.CreateAllSearchFieldControls()
   at MicroFour.StrataFrame.UI.Windows.Forms.BrowseDialogWindow.AddSearchFields()
   at MicroFour.StrataFrame.UI.Windows.Forms.BrowseDialogWindow..ctor(BrowseDialog BrowseDialogSettings, Boolean PopulateOnShow)
   at MicroFour.StrataFrame.UI.Windows.Forms.BrowseDialog.ShowDialog(Boolean PopulateOnShow)
   at MicroFour.StrataFrame.UI.Windows.Forms.BrowseDialog.ShowDialog()
   at MicroFour.StrataFrame.UI.Windows.Forms.MaintenanceFormToolStrip.cmdBrowse_Click(Object sender, EventArgs e)
   at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
   at System.Windows.Forms.ToolStripButton.OnClick(EventArgs e)
   at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
   at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
   at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)
   at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)
   at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.ToolStrip.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)