#region 生成簽名
/// <summary>
/// 獲取簽名資料
///</summary>
/// <param name="strParam"></param>
/// <param name="key"></param>
/// <returns></returns>
public static string GetSignInfo(Dictionary<string, string> strParam, string key)
{
    int i = 0;
    string sign = string
 
.Empty;
    StringBuilder sb = new StringBuilder();
    try
    {
        foreach (KeyValuePair<string, string> temp in strParam)
        {
            if (temp.Value == "" || temp.Value == null || temp.Key.ToLower() == "sign")
            {
                continue;
            }
            i
 
++;
            sb.Append(temp.Key.Trim() + "=" + temp.Value.Trim() + "&");
        }
        sb.Append("key=" + key.Trim() + "");
        sign = MD5Core.GetHashString(sb.ToString(), Encoding.UTF8).ToUpper();
    }
    catch (Exception ex)
    {
        Utility.AddLog("PayHelper", "GetSignInfo
 
", ex.Message, ex);
    }
    return sign;
}
#endregion

#region XML 處理
/// <summary>
/// 獲取XML值
/// </summary>
/// <param name="strXml">XML字串</param>
/// <param name="strData">欄位值</param>
/// <returns></returns>
public static string GetXmlValue(string strXml, string strData)
{
    string xmlValue = string.Empty;
    XmlDocument xmlDocument = new XmlDocument();
    xmlDocument.LoadXml(strXml);
    var selectSingleNode = xmlDocument.DocumentElement.SelectSingleNode(strData);
    if (selectSingleNode != null)
    {
        xmlValue = selectSingleNode.InnerText;
    }
    return xmlValue;
}

/// <summary>
/// 集合轉換XML資料 (拼接成XML請求資料)
/// </summary>
/// <param name="strParam">引數</param>
/// <returns></returns>
public static string CreateXmlParam(Dictionary<string, string> strParam)
{
    StringBuilder sb = new StringBuilder();
    try
    {
        sb.Append("<xml>");
        foreach (KeyValuePair<string, string> k in strParam)
        {
            if (k.Key == "attach" || k.Key == "body" || k.Key == "sign")
            {
                sb.Append("<" + k.Key + "><![CDATA[" + k.Value + "]]></" + k.Key + ">");
            }
            else
            {
                sb.Append("<" + k.Key + ">" + k.Value + "</" + k.Key + ">");
            }
        }
        sb.Append("</xml>");
    }
    catch (Exception ex)
    {
        Utility.AddLog("PayHelper", "CreateXmlParam", ex.Message, ex);
    }

    return sb.ToString();
}

/// <summary>
/// XML資料轉換集合（XML資料拼接成字串)
/// </summary>
/// <param name="xmlString"></param>
/// <returns></returns>
public static Dictionary<string, string> GetFromXml(string xmlString)
{
    Dictionary<string, string> sParams = new Dictionary<string, string>();
    try
    {
        XmlDocument doc = new XmlDocument();
        doc.LoadXml(xmlString);
        XmlElement root = doc.DocumentElement;
        int len = root.ChildNodes.Count;
        for (int i = 0; i < len; i++)
        {
            string name = root.ChildNodes[i].Name;
            if (!sParams.ContainsKey(name))
            {
                sParams.Add(name.Trim(), root.ChildNodes[i].InnerText.Trim());
            }
        }
    }
    catch (Exception ex)
    {
        Utility.AddLog("PayHelper", "GetFromXml", ex.Message, ex);
    }
    return sParams;
}

/// <summary>
/// 返回通知 XML
/// </summary>
/// <param name="returnCode"></param>
/// <param name="returnMsg"></param>
/// <returns></returns>
public static string GetReturnXml(string returnCode, string returnMsg)
{
    StringBuilder sb = new StringBuilder();
    sb.Append("<xml>");
    sb.Append("<return_code><![CDATA[" + returnCode + "]]></return_code>");
    sb.Append("<return_msg><![CDATA[" + returnMsg + "]]></return_msg>");
    sb.Append("</xml>");
    return sb.ToString();
}
#endregion