关于EF输出sql的执行日志

using System;
using System.Data.Common;
using System.Diagnostics;
using Clutch.Diagnostics.EntityFramework;

/// <summary>
/// Implementation of IDbTracingListener Class is used for tracing all SQL Queries to the entity framework database
/// </summary>
public class DbTracingListener : IDbTracingListener
{
    public void CommandExecuted(DbConnection connection, DbCommand command, object result, TimeSpan duration)
    {
        Debug.WriteLine(command.CommandText);
        Debug.WriteLine(string.Format("Executed in: {0}", duration));
    }

    public void CommandExecuting(DbConnection connection, DbCommand command)
    {

    }

    public void CommandFailed(DbConnection connection, DbCommand command, Exception exception, TimeSpan duration)
    {

    }

    public void CommandFinished(DbConnection connection, DbCommand command, object result, TimeSpan duration)
    {

    }
}

在方法内部通过 context.Command.CommandText 可以获得你的ef的sql命令的内容。

然后在程序的入口启用SQL日志输出实现：

// Enable Tracing queries
DbTracing.Enable();
// Adding the listener (implementation of IDbTracingListener)
DbTracing.AddListener(new DbTracingListener());

关于EF输出sql的执行日志

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