Find and Replace Text

VSTO

Word.Application wordApp = Application;
wordApp.Documents.Open("Search and Replace.doc");
object replaceAll = Word.WdReplace.wdReplaceAll;
this.Application.Selection.Find.ClearFormatting();
this.Application.Selection.Find.Text = "find me";
this.Application.Selection.Find.Replacement.ClearFormatting();
this.Application.Selection.Find.Replacement.Text = "Found";
this.Application.Selection.Find.Execute(
	ref missing, ref missing, ref missing, ref missing, ref missing,
	ref missing, ref missing, ref missing, ref missing, ref missing,
	ref replaceAll, ref missing, ref missing, ref missing, ref missing);

Aspose.Words

Document doc = new Document("Search and Replace.doc");
doc.Range.Replace("find me", "found", false, true);
doc.Save("Search and Replace.doc");

Download Sample Code

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