This link Add Watermark in C#|Aspose.Words for .NET has provision to add watermark in whole document but we need to add water mark to specific pages only such as 6 page or 8 page in the document. Can you help me to achieve this functionality using Aspose.Word library.
You can build logic on the following code to get the desired output:
Document doc = new Document("E:\\temp\\in.docx");
Node[] runs = doc.GetChildNodes(NodeType.Run, true).ToArray();
for (int i = 0; i < runs.Length; i++)
{
Run run = (Run)runs[i];
int length = run.Text.Length;
Run currentNode = run;
for (int x = 1; x < length; x++)
{
currentNode = SplitRun(currentNode, 1);
}
}
DocumentBuilder builder = new DocumentBuilder(doc);
PageSetup ps = builder.PageSetup;
NodeCollection smallRuns = doc.GetChildNodes(NodeType.Run, true);
LayoutCollector collector = new LayoutCollector(doc);
int pageIndex = 8;
foreach (Run run in smallRuns)
{
if (collector.GetStartPageIndex(run) == pageIndex)
{
Shape watermark = new Shape(doc, Aspose.Words.Drawing.ShapeType.TextPlainText);
watermark.RelativeHorizontalPosition = RelativeHorizontalPosition.Page;
watermark.RelativeVerticalPosition = RelativeVerticalPosition.Page;
watermark.Width = 300;
watermark.Height = 70;
watermark.HorizontalAlignment = HorizontalAlignment.Center;
watermark.VerticalAlignment = VerticalAlignment.Center;
watermark.Rotation = -40;
watermark.Fill.Color = Color.Gray;
watermark.StrokeColor = Color.Gray;
watermark.TextPath.Text = "watermarkText";
watermark.TextPath.FontFamily = "Arial";
watermark.Name = string.Format("WaterMark_{0}", Guid.NewGuid());
watermark.WrapType = WrapType.None;
builder.MoveTo(run);
builder.InsertNode(watermark);
break;
}
}
doc.Save("E:\\temp\\19.1.docx");
private static Run SplitRun(Run run, int position)
{
Run afterRun = (Run)run.Clone(true);
afterRun.Text = run.Text.Substring(position);
run.Text = run.Text.Substring((0), (0) + (position));
run.ParentNode.InsertAfter(afterRun, run);
return afterRun;
}