使用OleDbDataReader读取从SQL Server XML [英] Read XML from SQL Server using OleDbDataReader
本文介绍了使用OleDbDataReader读取从SQL Server XML的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我卡试图使用的OleDb从SQL Server读取XML数据。
I'm stuck trying to read XML data from SQL Server using OleDb.
private static void Main(string[] args){
var con = new OleDbConnection("Provider=SQLNCLI11.1;Data Source=localhost;Integrated Security=SSPI;Initial Catalog=Temp");
var cmd = new OleDbCommand(
"SELECT [Id] ,[Description] FROM [Temp].[dbo].[SomeTable] where [Id]= 1 for xml path, root('root')", con);
con.Open();
byte[] result = null;
OleDbDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
while (reader.Read()){
result = (byte[]) reader[0];
}
MemoryStream stream = new MemoryStream(result);
stream.Position = 0;
XmlDocument doc = new XmlDocument();
doc.Load(stream);
Console.Out.WriteLine(doc.OuterXml);
}
它没有说,数据格式不正确。如果我的字节数组转换为字符串,我看到了很多怪字。我做错了什么?
It fails saying that data is malformed. If I convert the byte array to string I see a lot of "strange " characters. What I'm doing wrong?
推荐答案
由于该结果是直接的XML我相信你正面临issue.You需要得到的结果行集,而不是标量。 读为字符串,可以使用loadXML的,而不是流。
Since the result is direct XML I believe you are facing issue.You need to get the result in row-set instead of scalar. Read as String, Use LoadXML instead of stream.
下面是code我变了。
Below is the code I changed.
private static void Main(string[] args)
{
var con = new OleDbConnection("Provider=SQLNCLI11.1;Data Source=localhost;Integrated Security=SSPI;Initial Catalog=Temp");
var cmd = new OleDbCommand(
"Select (SELECT [Id] ,[Description] FROM [Temp].[dbo].[SomeTable] where [Id]= 1 for xml path, root('root')) AS XML", con);
con.Open();
string result = string.Empty;
OleDbDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
while (reader.Read())
{
result = reader[0].ToString();
}
con.Close();
XmlDocument doc = new XmlDocument();
doc.LoadXml(result);
Console.Out.WriteLine(doc.OuterXml);
}
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