VS项目，在生成的时候自动修改版本号

demo示例：https://gitee.com/chenheze90/L28_AutoVSversion
可通过下载demo运行即可。
原理：通过csproject项目文件中的Target标签，实现在项目编译之前对项目版本号进行修改，避免手动修改；

1.基础版

效果图如下

部分脚本如下：

<Project>
<PropertyGroup><PreBuildEvent></PreBuildEvent></PropertyGroup><Target Name="SetAssemblyVersion" BeforeTargets="BeforeBuild"><PropertyGroup><Year>$([System.DateTime]::Now.ToString("yy"))</Year><MonthDay>$([System.DateTime]::Now.ToString("MMdd"))</MonthDay></PropertyGroup><Message Text="Setting AssemblyVersion to 1.0.$(Year).$(MonthDay)" Importance="high" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="//using System.Reflection;" Overwrite="true" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyTitle(&quot;MyAPPTitle&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyDescription(&quot;2021.03.29&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyConfiguration(&quot;&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyCompany(&quot;&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyProduct(&quot;MyPro&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyCopyright(&quot;Copyright ?  CCC&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyTrademark(&quot;&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyCulture(&quot;&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Runtime.InteropServices.ComVisible(false)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Windows.ThemeInfo(System.Windows.ResourceDictionaryLocation.None, System.Windows.ResourceDictionaryLocation.SourceAssembly)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyVersion(&quot;01.00.00$(Year).$(MonthDay)&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyFileVersion(&quot;01.00.00$(Year).$(MonthDay)&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyInformationalVersion(&quot;01.00.00$(Year).$(MonthDay)&quot;)]" Overwrite="false" /></Target>
</Project>

2.进阶版

部分项目要自定义生成版本号，可通过自定义类的方式来实现。
1.新建项目ClassLibrary1
2.引用系统类库sing Microsoft.Build.Framework;；using Microsoft.Build.Utilities;
3.新建类GenerateVersionTask

public class GenerateVersionTask : Task{[Output]public int Version { get; set; }public override bool Execute(){// 生成版本号的逻辑Version = GetVisitCount();return true;}private const string DataFilePath = "visit_counter.dat";public static int GetVisitCount(){// 读取存储的数据int visitCount = 0; DateTime lastVisitDate = DateTime.Now;ReadData(ref visitCount, ref lastVisitDate);// 获取当前日期DateTime today = DateTime.Today;// 检查是否是新的一天if (lastVisitDate < today){// 重置访问次数visitCount = 0;lastVisitDate = today;}// 增加访问次数visitCount++;// 保存数据SaveData(visitCount, lastVisitDate);// 返回访问次数return visitCount;}private static void ReadData(ref int count, ref DateTime countdate){if (File.Exists(DataFilePath)){string[] lines = File.ReadAllLines(DataFilePath);if (lines.Length == 2){int visitCount = int.Parse(lines[0]);DateTime lastVisitDate = DateTime.Parse(lines[1]);count = visitCount; countdate = lastVisitDate;}}else{File.Create(DataFilePath);count = 0; countdate = DateTime.Now;}}private static void SaveData(int visitCount, DateTime lastVisitDate){string[] lines = { visitCount.ToString(), lastVisitDate.ToString() };File.WriteAllLines(DataFilePath, lines);}}

4.增加脚本

<UsingTask TaskName="GenerateVersionTask" AssemblyFile="$(TargetDir)\ClassLibrary1.dll" />

和

    <GenerateVersionTask><Output TaskParameter="Version" PropertyName="MyVersion" /></GenerateVersionTask>

效果如图所示

  <UsingTask TaskName="GenerateVersionTask" AssemblyFile="$(TargetDir)\ClassLibrary1.dll" /><Target Name="SetAssemblyVersion" BeforeTargets="BeforeBuild"><PropertyGroup><Year>$([System.DateTime]::Now.ToString("yy"))</Year><MonthDay>$([System.DateTime]::Now.ToString("MMdd"))</MonthDay></PropertyGroup><GenerateVersionTask><Output TaskParameter="Version" PropertyName="MyVersion" /></GenerateVersionTask><Message Text="Generated Version: $(MyVersion)" Importance="high" /><Message Text="Setting AssemblyVersion to 01.0$(MyVersion).00$(Year).$(MonthDay)" Importance="high" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="//using System.Reflection;" Overwrite="true" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyTitle(&quot;MyAPPTitle&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyDescription(&quot;2021.03.29&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyConfiguration(&quot;&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyCompany(&quot;&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyProduct(&quot;MyPro&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyCopyright(&quot;Copyright ?  CCC&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyTrademark(&quot;&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyCulture(&quot;&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Runtime.InteropServices.ComVisible(false)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Windows.ThemeInfo(System.Windows.ResourceDictionaryLocation.None, System.Windows.ResourceDictionaryLocation.SourceAssembly)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyVersion(&quot;01.0$(MyVersion).00$(Year).$(MonthDay)&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyFileVersion(&quot;01.0$(MyVersion).00$(Year).$(MonthDay)&quot;)]" Overwrite="false" /><WriteLinesToFile File="$(MSBuildThisFileDirectory)Properties\AssemblyInfo.cs" Lines="[assembly: System.Reflection.AssemblyInformationalVersion(&quot;01.0$(MyVersion).00$(Year).$(MonthDay)&quot;)]" Overwrite="false" /></Target>
</Project>