/// <summary>
/// 设置与MDataTable间的字段映射
/// </summary>
/// <param name="itemName">Rss名称</param>
/// <param name="formatText">格式化，如“{0}.Name”，若无需要格式化，直接赋Null值</param>
/// <param name="tableColumnNames">同DataTable的字段名称</param>
public void SetMap(RssItemName itemName, string formatText, params object[] tableColumnNames)
{
RssItemMap map = new RssItemMap();
map.RssItemName = itemName.ToString();
map.FormatText = formatText;
map.TableColumnNames = tableColumnNames;
mapList.Add(map);
}
private void BuildRss()
{
object propValue = null;
XmlNode cNode = rssDoc.XmlDoc.DocumentElement.ChildNodes[0];
CreateNode(cNode, channel);//Channel处理
XmlNode iNode = null;
if (img != null)
{
iNode = rssDoc.CreateNode("image", string.Empty);
cNode.AppendChild(iNode);
CreateNode(iNode, img);//Channel-Image处理
}
if (channel.Items.Count > 0)
{
foreach (RssItem item in channel.Items)
{
iNode = rssDoc.CreateNode("item", string.Empty);
cNode.AppendChild(iNode);
CreateNode(iNode, item);//Channel-Items处理
}
}
else if (_MTable != null && mapList.Count > 0)
{
foreach (MDataRow row in _MTable.Rows)
{
iNode = rssDoc.CreateNode("item", string.Empty);
cNode.AppendChild(iNode);
//foreach (RssItemMap item in mapList)
RssItemMap item = null;
for (int k = 0; k < mapList.Count; k++)
{
item = mapList[k];
if (item.TableColumnNames.Length > 0)
{
MDictionary <string, string> dic = new MDictionary <string, string>(item.TableColumnNames.Length, StringComparer.OrdinalIgnoreCase);
object[] values = new object[item.TableColumnNames.Length];
for (int i = 0; i < item.TableColumnNames.Length; i++)
{
string columnName = item.TableColumnNames[i].ToString();
values[i] = row[columnName].Value;
dic.Set(columnName, Convert.ToString(values[i]));
}
if (OnForeach != null)
{
item.FormatText = OnForeach(item.FormatText, dic, k);
}
if (string.IsNullOrEmpty(item.FormatText))
{
propValue = values[0];
}
else
{
propValue = string.Format(item.FormatText, values);
}
}
//else if (item.TableColumnNames.Length > 0)
//{
// propValue = row[item.TableColumnNames[0].ToString()].Value;
// if (!string.IsNullOrEmpty(item.FormatText))
// {
// propValue = string.Format(item.FormatText, propValue);
// }
//}
else
{
propValue = item.FormatText;
}
if (propValue == null || propValue == DBNull.Value)
{
continue;
}
if (item.RssItemName == "Description")
{
propValue = rssDoc.SetCDATA(propValue.ToString());
}
rssDoc.CreateNodeTo(iNode, item.RssItemName.Substring(0, 1).ToLower() + item.RssItemName.Substring(1), propValue.ToString());
}
}
}
}
public void SetMap(RssItemName itemName, string formatText, params object[] tableColumnNames)
{
RssItemMap map = new RssItemMap();
map.RssItemName = itemName.ToString();
map.FormatText = formatText;
map.TableColumnNames = tableColumnNames;
mapList.Add(map);
}
