Save image using callBack function
in C# and VB.NET


Complete code 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using SautinSoft.RtfToHtml;

namespace Example
{
    class Program
    {
        static void Main(string[] args)
        {
            UsingImagesSavingCallback();
        }
        /// <summary>
        /// How to use image saving callback and set a template name for all images.
        /// </summary>
        static void UsingImagesSavingCallback()
        {
            string inpFile = @"..\..\..\..\example.docx";
            string outFile = Path.GetFullPath(@"Result.html");
            string imgDir = Path.GetDirectoryName(outFile);

            RtfToHtml r = new RtfToHtml();

            // Set images directory
            HtmlFixedSaveOptions opt = new HtmlFixedSaveOptions()
            {
                ImagesDirectoryPath = Path.Combine(imgDir, "Result_images"),
                ImagesDirectorySrcPath = "Result_images",
                // Change to store images as physical files on local drive.
                EmbedImages = false,
                ImageSavingCallback = new SaveImagesOpt() { TemplateImageName = "MyPicture"}
            };

            try
            {
                r.Convert(inpFile, outFile, opt);
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Conversion failed! {ex.Message}");
            }

            // Open the result.
            System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(outFile) { UseShellExecute = true });
        }
    }
    public class SaveImagesOpt : IHtmlImageSavingCallback
    {
        public string TemplateImageName { get; set; } = "picture";
        public void ImageSaving(SautinSoft.Document.HtmlImageSavingArgs args)
        {
            args.ImageFileName = args.ImageFileName.Replace("image", TemplateImageName);
        }
    }
}

Download

Imports System
Imports System.Collections.Generic
Imports System.Linq
Imports System.Text
Imports System.IO
Imports SautinSoft.RtfToHtml

Namespace Example
	Friend Class Program
		Shared Sub Main(ByVal args() As String)
			UsingImagesSavingCallback()
		End Sub
		''' <summary>
		''' How to use image saving callback and set a template name for all images.
		''' </summary>
		Private Shared Sub UsingImagesSavingCallback()
			Dim inpFile As String = "..\..\..\..\example.docx"
			Dim outFile As String = Path.GetFullPath("Result.html")
			Dim imgDir As String = Path.GetDirectoryName(outFile)

			Dim r As New RtfToHtml()

			' Set images directory
			Dim opt As New HtmlFixedSaveOptions() With {
				.ImagesDirectoryPath = Path.Combine(imgDir, "Result_images"),
				.ImagesDirectorySrcPath = "Result_images",
				.EmbedImages = False,
				.ImageSavingCallback = New SaveImagesOpt() With {.TemplateImageName = "MyPicture"}
			}

			Try
				r.Convert(inpFile, outFile, opt)
			Catch ex As Exception
				Console.WriteLine($"Conversion failed! {ex.Message}")
			End Try

			' Open the result.
			System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(outFile) With {.UseShellExecute = True})
		End Sub
	End Class
	Public Class SaveImagesOpt
        Implements SautinSoft.Document.IHtmlImageSavingCallback

        Public Property TemplateImageName() As String = "picture"

        Private Sub IHtmlImageSavingCallback_ImageSaving(args As SautinSoft.Document.HtmlImageSavingArgs) Implements SautinSoft.Document.IHtmlImageSavingCallback.ImageSaving
            args.ImageFileName = args.ImageFileName.Replace("image", TemplateImageName)
        End Sub
    End Class
End Namespace

Download

If you need a new code example or have a question: email us at support@sautinsoft.com or ask at Online Chat (right-bottom corner of this page) or use the Form below:


Questions and suggestions from you are always welcome!

We are developing .Net components since 2002. We know PDF, DOCX, RTF, HTML, XLSX and Images formats. If you need any assistance with creating, modifying or converting documents in various formats, we can help you. We will write any code example for you absolutely free.