PdfFocusToImage(String) Method

public int ToImage(
	string fileName
)

Public Function ToImage ( 
	fileName As String
) As Integer

using System;
using System.IO;

namespace Sample
{
    class Sample
    {
        static void Main(string[] args)
        {
            // Before starting, we recommend to get a free 100-day key:
            // https://sautinsoft.com/start-for-free/

            // Apply the key here:
            // SautinSoft.PdfFocus.SetLicense("...");

           // Convert PDF 1st page to PNG file.
            SautinSoft.PdfFocus f = new SautinSoft.PdfFocus();

            string pdfPath = Path.GetFullPath(@"..\..\..\Excel.pdf");
            string imagePath = "Result.png";

            f.OpenPdf(pdfPath);

            if (f.PageCount > 0)
            {
                //save 1st page to png file, 300 dpi
                f.ImageOptions.ImageFormat = SautinSoft.PdfFocus.CImageOptions.ImageFormats.Png;
                f.ImageOptions.Dpi = 300;
                f.ImageOptions.SelectedPages = new int[] { 0 };

                if (f.ToImage(imagePath) == 0)
                {
                    // 0 - converting successfully                
                    // 2 - can't create output file, check the output path
                    // 3 - converting failed
                    System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(imagePath) { UseShellExecute = true });
                }
            }
        }
    }
}

Imports System
Imports System.IO

Namespace Sample
    Friend Class Sample
        Shared Sub Main(ByVal args() As String)
            ' Before starting, we recommend to get a free 100-day key:
            ' https://sautinsoft.com/start-for-free/

            ' Apply the key here:
            ' SautinSoft.PdfFocus.SetLicense("...");

           ' Convert PDF 1st page to PNG file.
            Dim f As New SautinSoft.PdfFocus()

            Dim pdfPath As String = Path.GetFullPath("..\..\..\Excel.pdf")
            Dim imagePath As String = "Result.png"

            f.OpenPdf(pdfPath)

            If f.PageCount > 0 Then
                'save 1st page to png file, 300 dpi
                f.ImageOptions.ImageFormat = SautinSoft.PdfFocus.CImageOptions.ImageFormats.Png
                f.ImageOptions.Dpi = 300
                f.ImageOptions.SelectedPages = New Integer() { 0 }

                If f.ToImage(imagePath) = 0 Then
                    ' 0 - converting successfully                
                    ' 2 - can't create output file, check the output path
                    ' 3 - converting failed
                    System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(imagePath) With {.UseShellExecute = True})
                End If
            End If
        End Sub
    End Class
End Namespace