private void c1Button1_Click(object sender, EventArgs e)
{
//print preview gauge
C1PrintPreviewDialog dlg = new C1PrintPreviewDialog();
dlg.Text = "C1PrintPreview";
C1PrintDocument doc = new C1PrintDocument();
doc.StartDoc();
doc.AllowNonReflowableDocs = true;
doc.PageLayout.PageSettings.Landscape = true;
string date = (weatherData1.Current as DataRowView)["year"].ToString();
doc.RenderBlockText("Weather Statistics on " + date);
doc.RenderBlockImage(c1Gauge1.GetImage());
doc.EndDoc();
dlg.Document = doc;
dlg.Show(this.ParentForm);
}