Install-Package ThinkSharp.WordTemplating

    var replacements = new Dictionary<string, object>(StringComparer.InvariantCultureIgnoreCase);
    
    replacements.Add("Replacement1", "Text For Replacement1");
    replacements.Add("Replacement2", "Text For Replacement2");
    replacements.Add("MyInt", 5);
    replacements.Add("MyDate", DateTime.Now);
    replacements.Add("MyDouble", Math.PI);
    replacements.Add("MyBoolean", true);
    replacements.Add("MyDateTimeOffset", DateTimeOffset.Now);
    replacements.Add("CustomType", new CustomType { FirstName = "Hugo", LastName = "Boss" } );
    replacements.Add("CustomTypeNoConverter", new CustomTypeNoConverter { FirstName = "Hugo", LastName = "Boss" });
    
    // add custom converters (overwrites default converts)
    engine.AddReplacementConverter<bool>((val, format) => format == "YesNo" ? (val ? "Yes" : "No") : val.ToString());
    engine.AddReplacementConverter<CustomType>((val, format) => format == "LastFirst" ? $"{val.LastName}, {val.FirstName}" : val.ToString());
    
    var engine = new TemplateEngine();
    // optional: change culture for value conversation. Default is "en-EN"
    // engine.Culture = new CultureInfo("de-DE")
    // optional: change the value for missing values in replacement dicationary. Default ist: NoReplacementValueAvailable
    // engone.NoReplacementAvailableValue = ""
    engine.ReplaceTemplate(@"Data\Test.docx", replacements);
    
    public class CustomType
    {
      public string FirstName { get; set; }
      public string LastName { get; set; }
      public override string ToString() => $"{FirstName} {LastName}";
    }
    
    public class CustomTypeNoConverter
    {
      public string FirstName { get; set; }
      public string LastName { get; set; }
      public override string ToString() => $"{FirstName} {LastName}";
    }