Smrf.NodeXL.ExcelTemplate.TaskPane.LockButton_Click C# (CSharp) Method

    LockButton_Click
    (
        object sender, 
        EventArgs e
    )
    {
        AssertValid();

        ICollection<IVertex> oSelectedVertices =
            oNodeXLControl.SelectedVertices;

        if (oSelectedVertices.Count == 0)
        {
            return;
        }

        // Lock or unlock the vertices.

        Boolean bLockVertices = (sender == tsbLockVertices);

        foreach (IVertex oVertex in oSelectedVertices)
        {
            if (bLockVertices)
            {
                oVertex.SetValue(ReservedMetadataKeys.LockVertexLocation,
                    true);
            }
            else
            {
                oVertex.RemoveKey(ReservedMetadataKeys.LockVertexLocation);
            }
        }

        // Lock or unlock the vertices in the workbook.

        EditedVertexAttributes oEditedVertexAttributes =
            new EditedVertexAttributes();

        oEditedVertexAttributes.Locked = bLockVertices;

        FireAttributesEditedInGraph(null, oEditedVertexAttributes);
    }