新革命：我用DataSet插入一行记录，怎样把刚插入的记录写入到Xml文件中。

Question

我用DataSet插入一行记录，怎样把刚插入的记录写入到Xml文件中。DataRow dr=ds.Tables[0].NewRow();
dr["title"] = title;
dr["source"] = source;
dr["content"] = content;
dr["input_datetime"] = now;
ds.Tables[0].Rows.Add(dr);
da.Update(ds,"News");

Answer 1

自己先顶一下先，怎么CSDN上没有人啊。

Answer 2

DataRow dr=ds.Tables[0].NewRow();
dr["title"] = title;
dr["source"] = source;
dr["content"] = content;
dr["input_datetime"] = now;
ds.Tables[0].Rows.Add(dr);
da.Update(ds,"News"); XmlTextWriter writer = new XmlTextWriter(Console.Out);
writer.Formatting = Formatting.Indented;
WriteQuote(writer, "MSFT", 74.125, 5.89, 69020000);
writer.Close(); } static void WriteQuote(XmlWriter writer, string symbol, 
double price, double change, long volume)
{
writer.WriteStartElement("Stock");
writer.WriteAttributeString("Symbol", symbol);
writer.WriteElementString("Price", XmlConvert.ToString(price));
writer.WriteElementString("Change", XmlConvert.ToString(change));
writer.WriteElementString("Volume", XmlConvert.ToString(volume));
writer.WriteEndElement();
}

Answer 3

DataRow dr=ds.Tables[0].NewRow();
dr["title"] = title;
dr["source"] = source;
dr["content"] = content;
dr["input_datetime"] = now;
ds.Tables[0].Rows.Add(dr);
da.Update(ds,"News"); XmlTextWriter writer = new XmlTextWriter(Server.MapPath(".")+"/a.xml",System.Text .Encoding .Default ); writer.Formatting = Formatting.Indented;
WriteQuote(writer, "MSFT", 74.125, 5.89, 69020000);
writer.Close();
//savexml } static void WriteQuote(XmlWriter writer, string symbol, 
double price, double change, long volume)
{
writer.WriteStartElement("Stock");
writer.WriteAttributeString("Symbol", symbol);
writer.WriteElementString("Price", XmlConvert.ToString(price));
writer.WriteElementString("Change", XmlConvert.ToString(change));
writer.WriteElementString("Volume", XmlConvert.ToString(volume));
writer.WriteEndElement();
}

Answer 4

DataRow dr=ds.Tables[0].NewRow();
dr["title"] = title;
dr["source"] = source;
dr["content"] = content;
dr["input_datetime"] = now;
ds.Tables[0].Rows.Add(dr);
da.Update(ds,"News");ds.WriteXml("abc.xml");确保abc.xml存在并且路径正确。