How to Use Arcmap Clip Tool programmatically

/**using ESRI.ArcGIS.Geoprocessor;
using ESRI.ArcGIS.esriSystem;**/

public static void ClipLayers(string inputFeatureclasspath, string clipFeatureclasspath, string outputFeatureclassName, Workspace workspace)
        {
       /** inputFeatureclasspath = GDBPath + "\\" + inputFeatureclassName;
           clipFeatureclasspath= GDBPath + "\\" + clipFeatureclassName;
       **/
            Geoprocessor GP = new Geoprocessor();
            GP.OverwriteOutput = true;
            //GP.SetEnvironmentValue("workspace", workspace.WorkspaceGDBPath);
            ESRI.ArcGIS.AnalysisTools.Clip clipTool = new
              ESRI.ArcGIS.AnalysisTools.Clip();
            clipTool.in_features = inputFeatureclasspath;
            clipTool.clip_features = clipFeatureclasspath;

            clipTool.out_feature_class = workspace.WorkspaceGDBPath + "\\" + outputFeatureclassName;// outputFeatureclassName;

            try
            {
                GP.Execute(clipTool, null);
            }
            catch (Exception e) { }
        }