You can print a background image or a watermark when the spreadsheet is printed.
Set the PrintBackground event to fire when printing, and specify the graphic with the PrintBackground event, and the opacity with the PrintInfo.Opacity property, so the printing of the spreadsheet has no watermark if opacity is highest (transparency is lowest) and shows the watermark through the spreadsheet if the opacity is low (transparency is high).
Using Code
- Use the PrintInfo object to specify the opacity for printing a watermark.
Example
This example shows how to print a watermark.
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private void fpSpread1_PrintBackground(object sender, FarPoint.Win.Spread.PrintBackgroundEventArgs e) { FarPoint.Win.Picture pic = new FarPoint.Win.Picture(System.Drawing.Image.FromFile("C:\\Spread70\\Samples\\Files\\cover.jpg"), FarPoint.Win.RenderStyle.Normal); pic.AlignHorz = FarPoint.Win.HorizontalAlignment.Left; pic.AlignVert = FarPoint.Win.VerticalAlignment.Top; pic.Paint(e.Graphics, e.SheetRectangle); } private void button1_Click(object sender, System.EventArgs e) { FarPoint.Win.Spread.PrintInfo pi = new FarPoint.Win.Spread.PrintInfo(); pi.Opacity = 100; fpSpread1.ActiveSheet.PrintInfo = pi; fpSpread1.PrintSheet(0); } |
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| VB | Copy Code |
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Private Sub FpSpread1_PrintBackground(ByVal sender As Object, ByVal e As FarPoint.Win.Spread.PrintBackgroundEventArgs) Handles FpSpread1.PrintBackground Dim pic As New FarPoint.Win.Picture(Image.FromFile("C:\Spread70\Samples\Files\cover.jpg"), FarPoint.Win.RenderStyle.Normal) pic.AlignHorz = FarPoint.Win.HorizontalAlignment.Left pic.AlignVert = FarPoint.Win.VerticalAlignment.Top pic.Paint(e.Graphics, e.SheetRectangle) End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim pi As New FarPoint.Win.Spread.PrintInfo() pi.Opacity = 100 FpSpread1.ActiveSheet.PrintInfo = pi FpSpread1.PrintSheet(0) End Sub |
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Return to the overview of Customizing the Appearance of the Printing.