I've tried this snippet:
///<summary>Find a specific tool (or command) in a toolbar and set it to be active.</summary>
///
///<param name="application">An IApplication interface.</param>
///<param name="toolName">A System.String that is the name of the command to return. Example: "esriFramework.HelpContentsCommand"</param>
///
///<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 toolName parameter.</remarks>
public void SetToolActiveInToolBar(ESRI.ArcGIS.Framework.IApplication application, System.String toolName)
{
ESRI.ArcGIS.Framework.ICommandBars commandBars = application.Document.CommandBars;
ESRI.ArcGIS.esriSystem.UID commandID = new ESRI.ArcGIS.esriSystem.UIDClass();
commandID.Value = toolName; // example: "esriArcMapUI.ZoomInTool";
ESRI.ArcGIS.Framework.ICommandItem commandItem = commandBars.Find(commandID, false, false);
if (commandItem != null)
application.CurrentTool = commandItem;
}
Buuuut, I have no idea, how run it. What should I get to ESRI.ArcGIS.Framework.IApplication application?