Add W6 D1 programs

FormulatrixBootcamp.sln

@@ -149,6 +149,12 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "W5 D5", "W5 D5", "{A966AD2E
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PreprocessingDirectives", "W5 D5\PreprocessingDirectives\PreprocessingDirectives.csproj", "{0AA3960D-7152-4FEE-B125-3C1E18FBE395}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "W6 D1", "W6 D1", "{BC48B9D4-ECEE-4451-B974-453C56155A59}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FileStream", "W6 D1\FileStream\FileStream.csproj", "{39C38AE1-9B7A-4957-9C49-952A96ACF06A}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StreamWriterAndStreamReader", "W6 D1\StreamWriterAndStreamReader\StreamWriterAndStreamReader.csproj", "{DE7BEB38-C495-41B5-A5F2-71691E61C55B}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -383,11 +389,21 @@ Global
 		{0AA3960D-7152-4FEE-B125-3C1E18FBE395}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{0AA3960D-7152-4FEE-B125-3C1E18FBE395}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{0AA3960D-7152-4FEE-B125-3C1E18FBE395}.Release|Any CPU.Build.0 = Release|Any CPU
+		{39C38AE1-9B7A-4957-9C49-952A96ACF06A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{39C38AE1-9B7A-4957-9C49-952A96ACF06A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{39C38AE1-9B7A-4957-9C49-952A96ACF06A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{39C38AE1-9B7A-4957-9C49-952A96ACF06A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{DE7BEB38-C495-41B5-A5F2-71691E61C55B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{DE7BEB38-C495-41B5-A5F2-71691E61C55B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{DE7BEB38-C495-41B5-A5F2-71691E61C55B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{DE7BEB38-C495-41B5-A5F2-71691E61C55B}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
+		{DE7BEB38-C495-41B5-A5F2-71691E61C55B} = {BC48B9D4-ECEE-4451-B974-453C56155A59}
+		{39C38AE1-9B7A-4957-9C49-952A96ACF06A} = {BC48B9D4-ECEE-4451-B974-453C56155A59}
 		{0AA3960D-7152-4FEE-B125-3C1E18FBE395} = {A966AD2E-80DB-49E0-8070-B6DFE0C1E36D}
 		{09D51696-9994-41B5-9959-9DFD1B331B02} = {5637E846-0989-4572-83A1-6CBC066E2D2D}
 		{CCE2C0C8-CD08-44DA-AD87-32848B8B64A7} = {FC559EAF-E754-4775-A039-64B804F331A8}

W6 D1/FileStream/FileStream.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

W6 D1/FileStream/MyString.txt

@@ -0,0 +1 @@
+Hello World

W6 D1/FileStream/MyString2.txt

@@ -0,0 +1 @@
+Formulatrix Indonesia

W6 D1/FileStream/MyString3.txt

@@ -0,0 +1 @@
+Formulatrix Bootcamp 5

W6 D1/FileStream/Program.cs

@@ -0,0 +1,36 @@
+using System.Text;
+using System.IO;
+
+public class Program 
+{
+	static void Main()
+	{
+		int offset = 0;
+
+		// Write to a file
+		string myString = "Hello World";
+		using(FileStream fs = new(@"./MyString.txt", FileMode.Create, FileAccess.Write)) {
+			byte[] bytes = Encoding.UTF8.GetBytes(myString);
+			fs.Write(bytes, offset, bytes.Length - offset);
+		}
+
+		// Read from a file
+		using(FileStream fs = new(@"./MyString2.txt", FileMode.Open, FileAccess.Read)) 
+		{
+			Console.WriteLine(fs.Length);
+			byte[] bytes = new byte[fs.Length];
+			fs.Read(bytes, offset, bytes.Length - offset);
+			string myString2 = Encoding.UTF8.GetString(bytes);
+			Console.WriteLine(myString2);
+		}
+
+		// FileShare
+		using(FileStream fs = new(@"./MyString3.txt", FileMode.Open, FileAccess.Read, FileShare.None)) 
+		{
+			while (true) 
+			{
+
+			}
+		}
+	}
+}

W6 D1/StreamWriterAndStreamReader/Program.cs

@@ -0,0 +1,54 @@
+public class Program 
+{
+	static void Main() 
+	{
+		string file1 = @"./Text1.txt";
+		string file2 = @"./Text2.txt";
+		string file3 = @"./Text3.txt";
+
+		using (FileStream fs = new(file1, FileMode.OpenOrCreate, FileAccess.ReadWrite)) 
+		{
+			using (StreamWriter sw = new(fs)) 
+			{
+				sw.BaseStream.Position = fs.Seek(0, SeekOrigin.End);
+				sw.WriteLine();
+				sw.WriteLine("This is new line");
+			}
+		}
+		string[] myString = File.ReadAllLines(file1);
+		foreach (var s in myString) 
+		{
+			Console.WriteLine(s);
+		}
+
+		// Modify specific line
+		int line = 2;
+		string newString = "This is new line";
+		string[] myString2 = File.ReadAllLines(file2);
+		using (FileStream fs = new(file2, FileMode.OpenOrCreate, FileAccess.ReadWrite)) 
+		{
+			using (StreamWriter sw = new(fs)) 
+			{
+				myString2[line - 1] = newString;
+				foreach (var s in myString2) 
+				{
+					sw.WriteLine(s);
+				}
+			}
+		}
+
+		// Async method
+		Task.Run(async () => 
+		{
+			using (FileStream fs = new(file3, FileMode.OpenOrCreate, FileAccess.ReadWrite)) 
+			{
+				using (StreamWriter sw = new(fs)) 
+				{
+					sw.BaseStream.Position = fs.Seek(0, SeekOrigin.End);
+					await sw.WriteLineAsync("Hello");
+					await sw.WriteLineAsync("Hi");
+				}
+			}
+		}).Wait();
+	}
+}

W6 D1/StreamWriterAndStreamReader/StreamWriterAndStreamReader.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

W6 D1/StreamWriterAndStreamReader/Text1.txt

@@ -0,0 +1,4 @@
+This is line 1
+This is line 2
+This is line 3
+This is line 4

W6 D1/StreamWriterAndStreamReader/Text2.txt

@@ -0,0 +1,4 @@
+This is line 1
+This is new line
+This is line 3
+This is line 4

W6 D1/StreamWriterAndStreamReader/Text3.txt

@@ -0,0 +1,8 @@
+Hello
+Hi
+Hello
+Hi
+Hello
+Hi
+Hello
+Hi