Article: http://www.zzzprojects.com/entity-framework-extensions/docs/api/options-log

entity-framework-extensions-docs-api-options-log-example-1.cs

StringBuilder logger = new StringBuilder();
using (var ctx = new EntitiesContext())
{
    ctx.BulkSaveChanges(operation =>
    {
        operation.Log += s => logger.AppendLine(s);
    });
}

entity-framework-extensions-docs-api-options-log-example-2.cs

StringBuilder logDump;

using (var ctx = new EntitiesContext())
{
    ctx.BulkSaveChanges(operation =>
    {
        operation.UseLogDump = true;
        operation.BulkOperationExecuting = bulkOperation => logDump = bulkOperation.LogDump;
    });
}

entity-framework-extensions-docs-api-options-log-example-3.cs

StringBuilder logDump;

using (var ctx = new EntitiesContext())
{
    ctx.BulkSaveChanges(operation =>
    {
        operation.UseLogDump = true;
        operation.BulkOperationExecuting = bulkOperation => logDump = bulkOperation.LogDump;
    });
}