帮我解释一下代码关于插入sql语句的

C# code:

//位于person.cs页面
public class person
{
public string pUser;
public string pPass;

public person()
{
//
//TODO: 在此处添加构造函数逻辑
//
}
}

//位于DbHelper.cs页面中 关键是这段代码我不懂
public static bool insertMethod(person p)
{
SqlConnection conn = DbHelp.creatConn();
conn.Open();
SqlCommand cmd = new SqlCommand("insert into t_user values(@p_user,@p_pass)", conn);
SqlParameter para = new SqlParameter("@p_user", SqlDbType.VarChar, 20);
para.Value = p.pUser;
cmd.Parameters.Add(para);
para = new SqlParameter("@p_pass", SqlDbType.VarChar, 20);
para.Value = p.pPass;
cmd.Parameters.Add(para);
cmd.ExecuteNonQuery();
return true;
}

//位于add.cs页面中
protected void btnSubmit_Click(object sender, EventArgs e)
{
person p = new person();
p.pUser = this.TextBox1.Text;
p.pPass = this.TextBox2.Text;
if (DbHelp.insertMethod(p))
{
Response.Write("success");
}
}

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你都3个三角了，会不懂？

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引用

C# code//位于DbHelper.cs页面中 关键是这段代码我不懂publicstaticbool insertMethod(person p)
{
SqlConnection conn