C#获取Access数据库新添加的数据ID

如果数据量比较大的话,重新查询整个数据表会影响程序性能,所以,只查询一条就好了….

/// <summary>
/// 执行Insert语句,并返回新添加的记录ID
/// </summary>
/// <returns></returns>
public object ExecuteNonQueryAndGetIdentity(string sql)
{
    try
    {
        using (OleDbCommand com = new OleDbCommand(sql, con))
        {
            if (com.ExecuteNonQuery() >= 1)
            {
                com.CommandText = "select @@identity";
                return com.ExecuteScalar();
            }
            else
            {
                throw new Exception("记录添加不成功！");
            }
        }
    }
    catch (Exception)
    {
        throw;
    }
}

/// <summary>
/// 执行Insert语句,并返回新添加的记录ID
/// </summary>
public object ExecuteNonQueryAndGetIdentity(string sql, OleDbParameter par)
{
    try
    {
        using (OleDbCommand com = new OleDbCommand(sql, con))
        {
            com.Parameters.Add(par);
            if (com.ExecuteNonQuery() >= 1)
            {
                com.CommandText = "select @@identity";
                return com.ExecuteScalar();
            }
            else
            {
                throw new Exception("记录添加不成功！");
            }
        }
    }
    catch (Exception)
    {
        throw;
    }
}

/// <summary>
/// 执行Insert语句,并返回新添加的记录ID
/// </summary>
/// <param name="sql"></param>
/// <param name="array"></param>
/// <returns></returns>
public object ExecuteNonQueryAndGetIdentity(string sql, ParametersArray array)
{
    try
    {
        OleDbCommand com = new OleDbCommand(sql, con);
        SetParametersArray(ref com, array);
        if (com.ExecuteNonQuery() >= 1)
        {
            com.CommandText = "select @@identity";
            return com.ExecuteScalar();
        }
        else
        {
            throw new Exception("记录添加不成功！");
        }
    }
    catch (Exception)
    {

        throw;
    }
}

可以添加到上一篇文章所写的类中使用