net6.0-windows 
namespace System.Data.Common
{
    public abstract class DbConnection : IDbConnection, IDisposable
    {
        public virtual event StateChangeEventHandler StateChange;
    }
}
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.NET
5.06.07.08.09.010.0
.NET Core
1.01.12.02.12.23.03.1
.NET Framework
2.03.03.54.04.54.5.14.5.24.64.6.14.6.24.74.7.14.7.24.84.8.1
.NET Standard
1.21.31.41.51.62.02.1
Information specific to net6.0
Assembly

System.Data.Common , Version=4.1.0.0, PublicKeyToken=b03f5f7f11d50a3a

Referencing

Your project needs a package reference to System.Data.Common.

Package System.Data.Common (4.3.0) netstandard1.2
Platform Restrictions

The event adder is supported on all platforms.

The event remover is supported on all platforms.

  • Built-in API
  • Package-provided API