Get Command on Toolbar by Names Snippet

///<summary>Find a command item particularly on a toolbar.</summary>
///  
///<param name="application">An IApplication interface.</param>
///<param name="toolbarName">A System.String that is the name of the toolbar to return. Example: "esriArcMapUI.StandardToolBar"</param>
///<param name="commandName">A System.String that is the name of the command to return. Example: "esriFramework.HelpContentsCommand"</param>
///   
///<returns>An ICommandItem interface.</returns>
///  
///<remarks>Refer to the EDN document http://edndoc.esri.com/arcobjects/9.1/default.asp?URL=/arcobjects/9.1/ArcGISDevHelp/TechnicalDocuments/Guids/ArcMapIds.htm for a listing of available CLSID's and ProgID's that can be used as the toolbarName and commandName parameters.</remarks>
public ESRI.ArcGIS.Framework.ICommandItem GetCommandOnToolbar(ESRI.ArcGIS.Framework.IApplication application, System.String toolbarName, System.String commandName)
{
  ESRI.ArcGIS.Framework.ICommandBars commandBars = application.Document.CommandBars;
  ESRI.ArcGIS.esriSystem.UID barID = new ESRI.ArcGIS.esriSystem.UIDClass();
  barID.Value = toolbarName; // Example: "esriArcMapUI.StandardToolBar"
  ESRI.ArcGIS.Framework.ICommandItem barItem = commandBars.Find(barID, false, false);

  if (barItem != null && barItem.Type == ESRI.ArcGIS.Framework.esriCommandTypes.esriCmdTypeToolbar)
  {
    ESRI.ArcGIS.Framework.ICommandBar commandBar = (ESRI.ArcGIS.Framework.ICommandBar)barItem;
    ESRI.ArcGIS.esriSystem.UID commandID = new ESRI.ArcGIS.esriSystem.UIDClass();
    commandID.Value = commandName; // Example: "esriArcMapUI.AddDataCommand"
    return commandBar.Find(commandID, false);
  }
  else
    return null;
}

'''<summary>Find a command item particularly on a toolbar.</summary>
'''  
'''<param name="application">An IApplication interface.</param>
'''<param name="toolbarName">A System.String that is the name of the toolbar to return. Example: "esriArcMapUI.StandardToolBar"</param>
'''<param name="commandName">A System.String that is the name of the command to return. Example: "esriFramework.HelpContentsCommand"</param>
'''   
'''<returns>An ICommandItem interface.</returns>
'''  
'''<remarks>Refer to the EDN document http://edndoc.esri.com/arcobjects/9.1/default.asp?URL=/arcobjects/9.1/ArcGISDevHelp/TechnicalDocuments/Guids/ArcMapIds.htm for a listing of available CLSID's and ProgID's that can be used as the toolbarName and commandName parameters.</remarks>
Public Function GetCommandOnToolbar(ByVal application As ESRI.ArcGIS.Framework.IApplication, ByVal toolbarName As System.String, ByVal commandName As System.String) As ESRI.ArcGIS.Framework.ICommandItem

  Dim commandBars As ESRI.ArcGIS.Framework.ICommandBars = application.Document.CommandBars
  Dim barID As ESRI.ArcGIS.esriSystem.UID = New ESRI.ArcGIS.esriSystem.UIDClass
  barID.Value = toolbarName ' Example: "esriArcMapUI.StandardToolBar"
  Dim barItem As ESRI.ArcGIS.Framework.ICommandItem = commandBars.Find(barID, False, False)

  If Not (barItem Is Nothing) AndAlso barItem.Type = ESRI.ArcGIS.Framework.esriCommandTypes.esriCmdTypeToolbar Then

    Dim commandBar As ESRI.ArcGIS.Framework.ICommandBar = CType(barItem, ESRI.ArcGIS.Framework.ICommandBar)
    Dim commandID As ESRI.ArcGIS.esriSystem.UID = New ESRI.ArcGIS.esriSystem.UIDClass
    commandID.Value = commandName ' Example: "esriArcMapUI.AddDataCommand"
    Return commandBar.Find(commandID, False)

  Else

    Return Nothing

  End If

End Function