错误信息：

System.Globalization.CultureNotFoundException:“Only the invariant culture is supported in globalization-invariant mode. See https://aka.ms/GlobalizationInvariantMode for more information. (Parameter 'name')
en-us is an invalid culture identifier.”

解决办法：

<Project Sdk="Microsoft.NET.Sdk.Web">

<TargetFramework>net8.0</TargetFramework>
<Nullable>enable</Nullable>
<ImplicitUsings>enable</ImplicitUsings>
<!--删除下面这句，或者改为false-->
<InvariantGlobalization>true</InvariantGlobalization>
 

<PackageReference Include="Hangfire" Version="1.8.6" />
<PackageReference Include="Hangfire.Core" Version="1.8.6" />
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.0" />
<PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.0" />
<PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />

DataTable dt = new DataTable();
dt = ds.Tables["All"].Clone();//克隆All的结构传递给dt
DataRow[] dr=this.dataSet31.Tables["Product"].Select("bc=1"); //通过条件得到符合条件的行
for(int i=0;i<dr.Length;i++)
{

dt.Rows.Add(dr[i]);//出错提示为:该行已经属于另一个表

}

解决办法：
dt.Rows.Add(dr[i].ItemArray);