111

2025-11-15 20:25:57 +08:00
parent 5478d0ed37
commit bb4a37acc4
99 changed files with 4315 additions and 16 deletions
@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <RootNamespace>_15_5</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36623.8 d17.14
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "15_5", "15_5.csproj", "{79BC6493-706C-4DCF-A78E-30B0D2CB1FA8}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{79BC6493-706C-4DCF-A78E-30B0D2CB1FA8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{79BC6493-706C-4DCF-A78E-30B0D2CB1FA8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{79BC6493-706C-4DCF-A78E-30B0D2CB1FA8}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{79BC6493-706C-4DCF-A78E-30B0D2CB1FA8}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {908C2BE7-032B-4A3E-BCBD-721A5B8AF689}
+	EndGlobalSection
+EndGlobal
@@ -0,0 +1,19 @@
+using System;
+using System.Text;
+
+namespace _15_5
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            StringBuilder sb = new StringBuilder("ABC", 50);
+            sb.Append(new char[] { 'D', 'F', 'E' });
+            sb.AppendFormat("GHI{0}{1}", 'J', 'k');
+            Console.WriteLine("{0} chars,内容为{1}", sb.Length, sb.ToString());
+            sb.Insert(0, "Alphabet---");
+            sb.Replace('k', 'K');
+            Console.WriteLine("{0} chars,内容为{1}", sb.Length, sb.ToString());
+        }
+    }
+}