PageWatermark.ImageTransparency Property

Gets or sets the transparency of the watermark’s image.

Namespace: DevExpress.XtraPrinting.Drawing

Assembly: DevExpress.Printing.v23.2.Core.dll

NuGet Package: DevExpress.Printing.Core

Declaration

C#

[DefaultValue(0)]
public int ImageTransparency { get; set; }

VB.NET

<DefaultValue(0)>
Public Property ImageTransparency As Integer

Property Value

Type	Default	Description
Int32	0	An integer value specifying the images’s transparency. It should be between 0 and 255, inclusive.

Remarks

This property specifies the watermark image’s transparency. Use the PageWatermark.Image property to access the watermark image.

Note

Transparency is not supported for SVG image watermarks. The ImageTransparency property’s value is ignored when you set an SVG file as a watermark image.

Example

This example demonstrates how to add a watermark to a printing system document. The SetTextWatermark method demonstrates the properties that are used to specify settings when a text watermark is added to a document, while the SetPictureWatermark method demonstrates the properties required to set a picture as a document’s watermark.

C#

using System.Drawing;
using DevExpress.XtraPrinting;
using DevExpress.XtraPrinting.Drawing;
using DevExpress.Drawing;
// ...

public void SetTextWatermark(PrintingSystem ps){
   // Create the text watermark.
   Watermark textWatermark = new Watermark();

   // Set watermark options.
   textWatermark.Text = "CUSTOM WATERMARK TEXT";
   textWatermark.TextDirection = DirectionMode.ForwardDiagonal;
   textWatermark.Font = new DXFont(textWatermark.Font.FontFamily, 40);
   textWatermark.ForeColor = Color.DodgerBlue;
   textWatermark.TextTransparency = 150;
   textWatermark.TextPosition = WatermarkPosition.InFront;
   textWatermark.PageRange = "1,3-5";

   // Add the watermark to the collection.
   ps.Watermarks.Add(textWatermark);
}

public void SetPictureWatermark(PrintingSystem ps){
   // Create the picture watermark.
   Watermark pictureWatermark = new Watermark();

   // Set watermark options.
   pictureWatermark.Image = Bitmap.FromFile("watermark.gif");
   pictureWatermark.ImageAlign = ContentAlignment.TopCenter;
   pictureWatermark.ImageTiling = false;
   pictureWatermark.ImageViewMode = ImageViewMode.Stretch;
   pictureWatermark.ImageTransparency = 150;
   pictureWatermark.ImagePosition = WatermarkPosition.Behind;
   pictureWatermark.PageRange = "2,4";

   // Add the watermark to the collection.
   ps.Watermarks.Add(pictureWatermark);
}

VB.NET

Imports System.Drawing
Imports DevExpress.XtraPrinting
Imports DevExpress.XtraPrinting.Drawing
Imports DevExpress.Drawing
' ...

Public Sub SetTextWatermark(ByVal ps As PrintingSystem)
   ' Create the text watermark.
   Dim textWatermark As New Watermark()

   ' Set watermark options.
   textWatermark.Text = "CUSTOM WATERMARK TEXT"
   textWatermark.TextDirection = DirectionMode.ForwardDiagonal
   textWatermark.Font = New DXFont(textWatermark.Font.FontFamily, 40)
   textWatermark.ForeColor = Color.DodgerBlue
   textWatermark.TextTransparency = 150
   textWatermark.TextPosition = WatermarkPosition.InFront
   textWatermark.PageRange = "1,3-5"

   ' Add the watermark to the collection.
   ps.Watermarks.Add(textWatermark)
End Sub

Public Sub SetPictureWatermark(ByVal ps As PrintingSystem)
   ' Create the picture watermark.
   Dim pictureWatermark As New Watermark()

   ' Set watermark options.
   pictureWatermark.Image = Bitmap.FromFile("watermark.gif")
   pictureWatermark.ImageAlign = ContentAlignment.TopCenter
   pictureWatermark.ImageTiling = False
   pictureWatermark.ImageViewMode = ImageViewMode.Stretch
   pictureWatermark.ImageTransparency = 150
   pictureWatermark.ImagePosition = WatermarkPosition.Behind
   pictureWatermark.PageRange = "2,4"

   ' Add the watermark to the collection.
   ps.Watermarks.Add(pictureWatermark)
End Sub