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  • PrepareCommand执行参数查询

    /// <summary>
    /// 执行参数查询
    /// </summary>
    /// <param name="cmd">数据库执行命令</param>
    /// <param name="conn">数据库链接命令</param>
    /// <param name="trans">事务</param>
    /// <param name="cmdText">查询语句</param>
    /// <param name="cmdParms">查询参数</param>
    /// <returns></returns>
    private static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, string cmdText, SqlParameter[] cmdParms)
            {
                if (conn.State != ConnectionState.Open)
                    conn.Open();
                cmd.Connection = conn;
                cmd.CommandText = cmdText;
                if (trans != null)
                    cmd.Transaction = trans;
                cmd.CommandType = CommandType.Text;//cmdType;
                if (cmdParms != null)
                {
                    foreach (SqlParameter parameter in cmdParms)
                    {
                        if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
                            (parameter.Value == null))
                        {
                            parameter.Value = DBNull.Value;
                        }
                        cmd.Parameters.Add(parameter);
                    }
                }
            }

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  • 原文地址:https://www.cnblogs.com/lonelyofsoul/p/PrepareCommand.html
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