941854: UG Documentation for multi threading and thread safety in PdfToImageConverter

PDF-to-image/Multithreading-using-parallel-process-in-.NET/Multithreading-using-parallel-process.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>Multithreading_using_parallel_process</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Syncfusion.PdfToImageConverter.Net" Version="*" />
+  </ItemGroup>
+
+</Project>

PDF-to-image/Multithreading-using-parallel-process-in-.NET/Multithreading-using-parallel-process.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.13.35818.85 d17.13
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Multithreading-using-parallel-process", "Multithreading-using-parallel-process.csproj", "{1989562F-B2D5-4030-B4B5-7CE03A727A4F}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{1989562F-B2D5-4030-B4B5-7CE03A727A4F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1989562F-B2D5-4030-B4B5-7CE03A727A4F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1989562F-B2D5-4030-B4B5-7CE03A727A4F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1989562F-B2D5-4030-B4B5-7CE03A727A4F}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {3C50F3BF-01C8-4496-AB89-EE451C32138B}
+	EndGlobalSection
+EndGlobal

PDF-to-image/Multithreading-using-parallel-process-in-.NET/Program.cs

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+using Syncfusion.PdfToImageConverter;
+
+namespace Multithreading_using_parallel_process
+{
+    class MultiThreading
+    {
+        static void Main(string[] args)
+        {
+            //Indicates the number of threads to be create.
+            int limit = 5;
+            Console.WriteLine("Parallel For Loop");
+            Parallel.For(0, limit, count =>
+            {
+                Console.WriteLine("Task {0} started", count);
+                //Create multiple PDF document, one document on each thread.
+                ConvertPdfToImage(count);
+                Console.WriteLine("Task {0} is done", count);
+            });
+        }
+        //Open and save a PDF document using multi-threading.
+        static void ConvertPdfToImage(int count)
+        {
+            using (FileStream inputStream = new FileStream(@"../../../Data/Input.pdf", FileMode.Open, FileAccess.Read))
+            {
+                //Load an existing PDF document.
+                using (PdfToImageConverter imageConverter = new PdfToImageConverter(inputStream))
+                {
+                    Stream outputStream = imageConverter.Convert(0, false, false);
+
+                    //Rewind the stream position to the beginning before copying.
+                    outputStream.Position = 0;
+
+                    //Create file stream.
+                    using (FileStream outputFileStream = new FileStream("Output" + count + ".jpeg", FileMode.Create, FileAccess.Write))
+                    {
+                        //Save the image to file stream.
+                        outputStream.CopyTo(outputFileStream);
+                    }
+                }
+            }
+        }
+    }
+}

PDF-to-image/Multithreading-using-tasks-in-.NET/Multithreading-using-tasks.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>Multithreading_using_tasks</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Syncfusion.PdfToImageConverter.Net" Version="*" />
+  </ItemGroup>
+
+</Project>

PDF-to-image/Multithreading-using-tasks-in-.NET/Multithreading-using-tasks.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.13.35818.85 d17.13
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Multithreading-using-tasks", "Multithreading-using-tasks.csproj", "{4359DB27-1E8B-4B21-AE6B-7A5E3AE58022}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{4359DB27-1E8B-4B21-AE6B-7A5E3AE58022}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4359DB27-1E8B-4B21-AE6B-7A5E3AE58022}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4359DB27-1E8B-4B21-AE6B-7A5E3AE58022}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4359DB27-1E8B-4B21-AE6B-7A5E3AE58022}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {4229D954-1DCB-4D09-99C5-07520C20B09E}
+	EndGlobalSection
+EndGlobal

PDF-to-image/Multithreading-using-tasks-in-.NET/Program.cs

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+using Syncfusion.PdfToImageConverter;
+
+namespace Multithreading_using_tasks
+{
+    class MultiThreading
+    {
+        //Indicates the number of threads to be create.
+        private const int TaskCount = 1000;
+        public static async Task Main()
+        {
+            //Create an array of tasks based on the TaskCount.
+            Task[] tasks = new Task[TaskCount];
+            for (int i = 0; i < TaskCount; i++)
+            {
+                tasks[i] = Task.Run(() => ConvertPdfToImage());
+            }
+            //Ensure all tasks complete by waiting on each task.
+            await Task.WhenAll(tasks);
+        }
+
+        //Open a PDF document and save image using multi-threading.
+        static void ConvertPdfToImage()
+        {
+            using (FileStream inputStream = new FileStream(@"../../../Data/Input.pdf", FileMode.Open, FileAccess.Read))
+            {
+                //Load an existing PDF document.
+                using (PdfToImageConverter imageConverter = new PdfToImageConverter(inputStream))
+                {
+                    Stream outputStream = imageConverter.Convert(0, false, false);
+
+                    //Rewind the stream position to the beginning before copying.
+                    outputStream.Position = 0;
+
+                    //Create file stream.
+                    using (FileStream outputFileStream = new FileStream(Path.GetFullPath(@"../../../Output/Output" + Guid.NewGuid().ToString() + ".jpeg"), FileMode.Create, FileAccess.ReadWrite))
+                    {
+                        //Save the image to file stream.
+                        outputStream.CopyTo(outputFileStream);
+                    }
+                }
+            }
+        }
+    }
+}