Public Event LayoutChanging As LayoutChangingEventHandler

public event LayoutChangingEventHandler LayoutChanging

Private Sub ardMain_LayoutChanging(ByVal sender As Object, ByVal e As Design.LayoutChangingArgs) Handles ardMain.LayoutChanging
    If e.Type = Design.LayoutChangeType.SectionDelete Then
        Dim Result As DialogResult
        Result = MessageBox.Show("Are you sure you want to delete this section?", "Delete?", MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1)
        If Result = DialogResult.Cancel Then
            e.AllowChange = False
        Else
            e.AllowChange = True
        End If
    End If
End Sub

private void ardMain_LayoutChanging(object sender, GrapeCity.ActiveReports.Design.LayoutChangingArgs e) 
{ 
    if (e.Type == Design.LayoutChangeType.SectionDelete)  
    {  
        DialogResult Result;  
        Result = MessageBox.Show("Are you sure you want to delete this section?", "Delete?", MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1);  
        if (Result == DialogResult.Cancel)  
        {  
            e.AllowChange = false;  
        }  
        else  
        {  
            e.AllowChange = true;  
        }  
    }  
}