Flip Line Direction Snippet

///<summary>The edit sketch direction of all of the selected polyline features is changed or flipped.</summary>
///
///<param name="application">An IApplication interface.</param>
///<param name="editor">An IEditor interface.</param>
/// 
///<remarks>Already must have a reference to IApplication and get the editor and start an edit session in the edit session you must have an edit selection, the code checks to make sure it is a line feature class and makes sure that there is an edit selection.</remarks>
public void FlipLineDirection(ESRI.ArcGIS.Framework.IApplication application, ESRI.ArcGIS.Editor.IEditor editor)
{
 
  if(application == null || editor == null)
  {
    System.Windows.Forms.MessageBox.Show("Flip operation aborted");
    return;
  }
  ESRI.ArcGIS.Editor.IEditLayers editLayers=editor as ESRI.ArcGIS.Editor.IEditLayers;
 
  // set up the progress bar and convert the number of selected features into an integer value.
  System.Int32 step=System.Convert.ToInt32(editor.SelectionCount / 100);
  ESRI.ArcGIS.esriSystem.IStatusBar statusBar=application.StatusBar;
  ESRI.ArcGIS.esriSystem.IStepProgressor stepProrogressor=statusBar.ProgressBar;

  stepProrogressor.MinRange=1;
  stepProrogressor.MaxRange=100;
  stepProrogressor.Message="Flipping features...";
  stepProrogressor.Position=0;
  stepProrogressor.StepValue=1;
  stepProrogressor.Show();

  try
  {
    // flip all the selected features in an edit operation
    editor.StartOperation();

    ESRI.ArcGIS.Geodatabase.IEnumFeature enumFeature=editor.EditSelection;
    enumFeature.Reset();

   
    for (System.Int32 featCount=0; featCount <= editor.SelectionCount - 1; featCount++)
    {
      ESRI.ArcGIS.Geodatabase.IFeature feature=enumFeature.Next();
      if(!(feature is ESRI.ArcGIS.Geometry.ICurve))
      {
        continue;
      }
      ESRI.ArcGIS.Geometry.ICurve curve=feature.Shape as ESRI.ArcGIS.Geometry.ICurve;
     
      curve.ReverseOrientation();
      feature.Shape=curve;
      feature.Store();

      if (featCount == step)
      {
        stepProrogressor.Step();
        step=step + System.Convert.ToInt32(editor.SelectionCount / 100);
      }
    }

    editor.StopOperation("Flip");
    stepProrogressor.Hide();
    return;
  }
  catch(System.Exception e)
  {
    editor.AbortOperation();
    System.Windows.Forms.MessageBox.Show("Flip operation aborted");
    return;
  }
 
}

'''<summary>The edit sketch direction of all of the selected polyline features is changed or flipped.</summary>
'''
'''<param name="application">An IApplication interface.</param>
'''<param name="editor">An IEditor interface.</param>
''' 
'''<remarks>Already must have a reference to IApplication and get the editor and start an edit session in the edit session you must have an edit selection, the code checks to make sure it is a line feature class and makes sure that there is an edit selection.</remarks>
Public Sub FlipLineDirection(ByVal application As ESRI.ArcGIS.Framework.IApplication, ByVal editor As ESRI.ArcGIS.Editor.IEditor)

  If application Is Nothing OrElse editor Is Nothing Then
          System.Windows.Forms.MessageBox.Show("Flip operation aborted")
          Return
  End If

  Dim editLayers As ESRI.ArcGIS.Editor.IEditLayers=TryCast(editor, ESRI.ArcGIS.Editor.IEditLayers)

  ' set up the progress bar and convert the number of selected features into an integer value.
  Dim [step] As System.Int32=System.Convert.ToInt32(editor.SelectionCount / 100)
  Dim statusBar As ESRI.ArcGIS.esriSystem.IStatusBar=application.StatusBar
  Dim stepProgressor As ESRI.ArcGIS.esriSystem.IStepProgressor=statusBar.ProgressBar
  With stepProgressor
    .MinRange=1
    .MaxRange=100
    .Message="Flipping features..."
    .Position=0
    .StepValue=1
    .Show()
  End With

  Try
    ' flip all the selected features in an edit operation
    editor.StartOperation()

    Dim enumFeature As ESRI.ArcGIS.Geodatabase.IEnumFeature=editor.EditSelection
    enumFeature.Reset()

    Dim featCount As System.Int32=0
    Do While featCount <= editor.SelectionCount - 1
      Dim feature As ESRI.ArcGIS.Geodatabase.IFeature=enumFeature.Next

            If Not(TypeOf feature Is ESRI.ArcGIS.Geometry.ICurve) Then
                    featCount += 1
                    Continue Do
      End If

      Dim curve As ESRI.ArcGIS.Geometry.ICurve=TryCast(feature.Shape, ESRI.ArcGIS.Geometry.ICurve) ' Dynamic Cast

      curve.ReverseOrientation()
            feature.Shape=curve
      feature.Store()

            If featCount=[step] Then
        stepProgressor.Step()
        [step]=[step] + System.Convert.ToInt32(editor.SelectionCount / 100)
      End If

      featCount += 1

    Loop

    editor.StopOperation("Flip")
    stepProgressor.Hide()

    Return

  Catch e As System.Exception

    editor.AbortOperation()
          System.Windows.Forms.MessageBox.Show("Flip operation aborted")

    Return

  End Try

End Sub