Hide and Show Annotations in C# Windows Application

[dixit.patel1]

Hi,

How to Hide and Show Annotations in C# Windows Application.

I am using ReferencedImageAnnotationView and HighlightAnnotationView in Annotations.

[Alex]

Hi,

You can show/hide Vintasoft annotation in Windows desktop application (WinForms/WPF) using the AnnotationView.IsVisible property.

Best regards, Alexander

[dixit.patel1]

Hi,

I am trying below Code but not working hide and show annotations.

Code: Select all

AnnotationDataController objAnnotationDataController = new AnnotationDataController(AnnotationViewer.Images);
AnnotationDataCollection objAnnotationDataCollection = objAnnotationDataController[annotationViewer1.FocusedIndex];
if (cbHideShowAnnotation.Text == "Hide")
{
       if (objAnnotationDataCollection.Count > 0)
       {
               for (int i = 0; i < objAnnotationDataCollection.Count; i++)
               {
                      if (objAnnotationDataCollection[i].Name == "I10")
                      {
                          objAnnotationDataCollection[i].IsVisible = false;
                      }
               }
        }
}

[Alex]

Hi,

Your code is not correct because you are creating new instance of AnnotationDataController class but you must use existing AnnotationDataController from AnnotationViewer.

Here is correct code:

Code: Select all

AnnotationDataController objAnnotationDataController = AnnotationViewer.AnnotationDataController;
AnnotationDataCollection objAnnotationDataCollection = objAnnotationDataController[annotationViewer1.FocusedIndex];
if (cbHideShowAnnotation.Text == "Hide")
{
       if (objAnnotationDataCollection.Count > 0)
       {
               for (int i = 0; i < objAnnotationDataCollection.Count; i++)
               {
                      if (objAnnotationDataCollection[i].Name == "I10")
                      {
                          objAnnotationDataCollection[i].IsVisible = false;
                      }
               }
        }
}

Best regards, Alexander