wrote in message news:F0F93A85-8451-4173-8696-B6DA9AD6B564@microsoft.com...
> John,
> Where's the declaration line? You go to have '<?xml version="1.0"
> encoding="UTF-8"?>' at least, on the first line of the xml file to make it
> for a valid.
>
> thx
> -jsh
>
> "John Bowman john.bowman@thermo.com>" wrote:
>
>> Hi All,
>>
>> I'm fairly new to XML, so I presume I'm doing something obviously dense
>> here, but here it goes. Below is an XML file that was extracted from a
>> test
>> Windows Installer .MSP (patch) file using the MsiExtractPatchXMLData()
>> method and directly written to disk as a test. On the surface, it seems
>> to
>> me to be valid XML since IE can load & display it.
>>
>> <MsiPatch xmlns="http://www.microsoft.com/msi/patch_applicability.xsd"
>> SchemaVersion="1.0.0.0"
>> PatchGUID="{2AAC52C8-0F60-481F-852D-116CDE7EBE0D}"
>> MinMsiVersion="3">
>> <TargetProduct MinMsiVersion="200">
>> <TargetProductCode
>> Validate="true">{C2E2F155-71DD-458A-966B-3C231CFB5E7D}</TargetProductCode>
>> <TargetVersion Validate="true" ComparisonType="LessThanOrEqual"
>> ComparisonFilter="MajorMinorUpdate">1.00.0000</TargetVersion>
>> <TargetLanguage Validate="false">1033</TargetLanguage>
>> <UpdatedLanguages>1033</UpdatedLanguages>
>> <UpgradeCode
>> Validate="true">{1C18A718-D408-4D74-B2C6-0F6A932CE841}</UpgradeCode>
>> </TargetProduct>
>>
>> <TargetProductCode>{C2E2F155-71DD-458A-966B-3C231CFB5E7D}</TargetProductCode>
>> <SequenceData>
>> <PatchFamily>C2E2F15571DD458A966B3C231CFB5E7D</PatchFamily>
>> <Sequence>0.0.17219.55500</Sequence>
>> <Attributes>0</Attributes>
>> </SequenceData>
>> </MsiPatch>
>>
>> Now that I can actually "see" the XML for testing purposes I want to
>> extract
>> some information from it, but it always fails to get anything. For
>> example,
>> what's funtionally wrong with the following code? It throws an exception:
>> "Object reference not set to an instance of an object." when it hits the
>> MessageBox.Show line. When I check the LocalName of xRoot, it correctly
>> shows "MsiPatch", but fails to get the xTargetProductNode, or any other
>> nodes below the root node. Using SelectNodes to get an XmlNodeList
>> doesn't
>> work either. The only way I can seem to get the info is by looping
>> through
>> the ChildNodes (and comparing their LocalNames to the tag I'm looking
>> for)
>> instead of directly with a simple XPath. What am I doing wrong?
>>
>> if(File.Exists(FileSpec) == true)
>> {
>> XmlDocument xDoc = new XmlDocument();
>> xDoc.Load(DEF_OUTPUT_FILENAME);
>> XmlNode xRoot = xDoc.DocumentElement;
>> XmlNode xTargetProductNode = xRoot.SelectSingleNode("TargetProduct");
>> //XmlNodeList xNodeList = xRoot.SelectNodes("TargetProduct"); ///Also
>> fails
>> to find anything and the xNodeList.Count = 0;
>> MessageBox.Show(xTargetProductNode.LocalName);
>> }
>> else
>> {
>> MessageBox.Show("Unable to read file:" +
>> Environment.NewLine +
>> FileSpec);
>> }
>>
>>
>> Thanks in advance for the help,
>>
>> --
>> John C. Bowman
>> Software Engineer
>> Thermo Electron Scientific Instruments Div.
>> <Remove this before reply> john.bowman@thermo.com
>>
>>
>>

"Scott M." <s-mar@nospam.nospam> wrote in message
news:epIPmIsGGHA.1676@TK2MSFTNGP09.phx.gbl...
> I'm not so sure about that. The line is certainly preferable, but a
> well-formed XML document doesn't have to have that line.
>
>
> "jsh02_nova@hotmail.com" <jsh02novahotmailcom@discussions.microsoft.com>
> wrote in message
> news:F0F93A85-8451-4173-8696-B6DA9AD6B564@microsoft.com...
>> John,
>> Where's the declaration line? You go to have '<?xml version="1.0"
>> encoding="UTF-8"?>' at least, on the first line of the xml file to make
>> it
>> for a valid.
>>
>> thx
>> -jsh
>>
>> "John Bowman john.bowman@thermo.com>" wrote:
>>
>>> Hi All,
>>>
>>> I'm fairly new to XML, so I presume I'm doing something obviously dense
>>> here, but here it goes. Below is an XML file that was extracted from a
>>> test
>>> Windows Installer .MSP (patch) file using the MsiExtractPatchXMLData()
>>> method and directly written to disk as a test. On the surface, it seems
>>> to
>>> me to be valid XML since IE can load & display it.
>>>
>>> <MsiPatch xmlns="http://www.microsoft.com/msi/patch_applicability.xsd"
>>> SchemaVersion="1.0.0.0"
>>> PatchGUID="{2AAC52C8-0F60-481F-852D-116CDE7EBE0D}"
>>> MinMsiVersion="3">
>>> <TargetProduct MinMsiVersion="200">
>>> <TargetProductCode
>>> Validate="true">{C2E2F155-71DD-458A-966B-3C231CFB5E7D}</TargetProductCode>
>>> <TargetVersion Validate="true" ComparisonType="LessThanOrEqual"
>>> ComparisonFilter="MajorMinorUpdate">1.00.0000</TargetVersion>
>>> <TargetLanguage Validate="false">1033</TargetLanguage>
>>> <UpdatedLanguages>1033</UpdatedLanguages>
>>> <UpgradeCode
>>> Validate="true">{1C18A718-D408-4D74-B2C6-0F6A932CE841}</UpgradeCode>
>>> </TargetProduct>
>>>
>>> <TargetProductCode>{C2E2F155-71DD-458A-966B-3C231CFB5E7D}</TargetProductCode>
>>> <SequenceData>
>>> <PatchFamily>C2E2F15571DD458A966B3C231CFB5E7D</PatchFamily>
>>> <Sequence>0.0.17219.55500</Sequence>
>>> <Attributes>0</Attributes>
>>> </SequenceData>
>>> </MsiPatch>
>>>
>>> Now that I can actually "see" the XML for testing purposes I want to
>>> extract
>>> some information from it, but it always fails to get anything. For
>>> example,
>>> what's funtionally wrong with the following code? It throws an
>>> exception:
>>> "Object reference not set to an instance of an object." when it hits the
>>> MessageBox.Show line. When I check the LocalName of xRoot, it correctly
>>> shows "MsiPatch", but fails to get the xTargetProductNode, or any other
>>> nodes below the root node. Using SelectNodes to get an XmlNodeList
>>> doesn't
>>> work either. The only way I can seem to get the info is by looping
>>> through
>>> the ChildNodes (and comparing their LocalNames to the tag I'm looking
>>> for)
>>> instead of directly with a simple XPath. What am I doing wrong?
>>>
>>> if(File.Exists(FileSpec) == true)
>>> {
>>> XmlDocument xDoc = new XmlDocument();
>>> xDoc.Load(DEF_OUTPUT_FILENAME);
>>> XmlNode xRoot = xDoc.DocumentElement;
>>> XmlNode xTargetProductNode = xRoot.SelectSingleNode("TargetProduct");
>>> //XmlNodeList xNodeList = xRoot.SelectNodes("TargetProduct"); ///Also
>>> fails
>>> to find anything and the xNodeList.Count = 0;
>>> MessageBox.Show(xTargetProductNode.LocalName);
>>> }
>>> else
>>> {
>>> MessageBox.Show("Unable to read file:" +
>>> Environment.NewLine +
>>> FileSpec);
>>> }
>>>
>>>
>>> Thanks in advance for the help,
>>>
>>> --
>>> John C. Bowman
>>> Software Engineer
>>> Thermo Electron Scientific Instruments Div.
>>> <Remove this before reply> john.bowman@thermo.com
>>>
>>>
>>>
>
>

"Martin Honnen" <mahotrash@yahoo.de> wrote in message
news:e%23TE4MsGGHA.1676@TK2MSFTNGP09.phx.gbl...
>
>
> John Bowman < wrote:
>
>
>> <MsiPatch xmlns="http://www.microsoft.com/msi/patch_applicability.xsd"
>> SchemaVersion="1.0.0.0"
>> PatchGUID="{2AAC52C8-0F60-481F-852D-116CDE7EBE0D}" MinMsiVersion="3">
>> <TargetProduct MinMsiVersion="200">
>
>> Now that I can actually "see" the XML for testing purposes I want to
>> extract some information from it, but it always fails to get anything. F
>
>> if(File.Exists(FileSpec) == true)
>> {
>> XmlDocument xDoc = new XmlDocument();
>> xDoc.Load(DEF_OUTPUT_FILENAME);
>> XmlNode xRoot = xDoc.DocumentElement;
>> XmlNode xTargetProductNode = xRoot.SelectSingleNode("TargetProduct");
>
> The super XPath FAQ, finding elements in the default namespace:
> <http://www.faqts.com/knowledge_base/view.phtml/aid/34022/fid/616>
>
>
> --
>
> Martin Honnen --- MVP XML
> http://JavaScript.FAQTs.com/

John Bowman < wrote:

> <MsiPatch xmlns="http://www.microsoft.com/msi/patch_applicability.xsd"
> SchemaVersion="1.0.0.0" PatchGUID="{2AAC52C8-0F60-481F-852D-116CDE7EBE0D}"
> MinMsiVersion="3">
> <TargetProduct MinMsiVersion="200">

> Now that I can actually "see" the XML for testing purposes I want to extract
> some information from it, but it always fails to get anything. F

> if(File.Exists(FileSpec) == true)
> {
> XmlDocument xDoc = new XmlDocument();
> xDoc.Load(DEF_OUTPUT_FILENAME);
> XmlNode xRoot = xDoc.DocumentElement;
> XmlNode xTargetProductNode = xRoot.SelectSingleNode("TargetProduct");

> Hi All,
>
> I'm fairly new to XML, so I presume I'm doing something obviously dense
> here, but here it goes. Below is an XML file that was extracted from a
> test Windows Installer .MSP (patch) file using the
> MsiExtractPatchXMLData() method and directly written to disk as a test. On
> the surface, it seems to me to be valid XML since IE can load & display
> it.
>
> <MsiPatch xmlns="http://www.microsoft.com/msi/patch_applicability.xsd"
> SchemaVersion="1.0.0.0" PatchGUID="{2AAC52C8-0F60-481F-852D-116CDE7EBE0D}"
> MinMsiVersion="3">
> <TargetProduct MinMsiVersion="200">
> <TargetProductCode
> Validate="true">{C2E2F155-71DD-458A-966B-3C231CFB5E7D}</TargetProductCode>
> <TargetVersion Validate="true" ComparisonType="LessThanOrEqual"
> ComparisonFilter="MajorMinorUpdate">1.00.0000</TargetVersion>
> <TargetLanguage Validate="false">1033</TargetLanguage>
> <UpdatedLanguages>1033</UpdatedLanguages>
> <UpgradeCode
> Validate="true">{1C18A718-D408-4D74-B2C6-0F6A932CE841}</UpgradeCode>
> </TargetProduct>
>
> <TargetProductCode>{C2E2F155-71DD-458A-966B-3C231CFB5E7D}</TargetProductCode>
> <SequenceData>
> <PatchFamily>C2E2F15571DD458A966B3C231CFB5E7D</PatchFamily>
> <Sequence>0.0.17219.55500</Sequence>
> <Attributes>0</Attributes>
> </SequenceData>
> </MsiPatch>
>
> Now that I can actually "see" the XML for testing purposes I want to
> extract some information from it, but it always fails to get anything. For
> example, what's funtionally wrong with the following code? It throws an
> exception: "Object reference not set to an instance of an object." when it
> hits the MessageBox.Show line. When I check the LocalName of xRoot, it
> correctly shows "MsiPatch", but fails to get the xTargetProductNode, or
> any other nodes below the root node. Using SelectNodes to get an
> XmlNodeList doesn't work either. The only way I can seem to get the info
> is by looping through the ChildNodes (and comparing their LocalNames to
> the tag I'm looking for) instead of directly with a simple XPath. What am
> I doing wrong?
>
> if(File.Exists(FileSpec) == true)
> {
> XmlDocument xDoc = new XmlDocument();
> xDoc.Load(DEF_OUTPUT_FILENAME);
> XmlNode xRoot = xDoc.DocumentElement;
> XmlNode xTargetProductNode = xRoot.SelectSingleNode("TargetProduct");
> //XmlNodeList xNodeList = xRoot.SelectNodes("TargetProduct"); ///Also
> fails to find anything and the xNodeList.Count = 0;
> MessageBox.Show(xTargetProductNode.LocalName);
> }
> else
> {
> MessageBox.Show("Unable to read file:" +
> Environment.NewLine +
> FileSpec);
> }
>
>
> Thanks in advance for the help,
>
> --
> John C. Bowman
> Software Engineer
> Thermo Electron Scientific Instruments Div.
> <Remove this before reply> john.bowman@thermo.com
>

"KDOR" <KDOR@newsgroups.nospam> wrote in message
news:OK9eO3vGGHA.4036@TK2MSFTNGP12.phx.gbl...
> Hi,
>
> I think your problem can be solved by using an XmlNamespaceManager on your
> calls to SelectSingleNode and SelectNodes
> Even when the nodes you are searching for are in the default namespace,
> you still need a prefix, and whenever you use a prefix in an XPath
> expression, you need an XmlNamespaceManager.
> (See class XmlNamespaceManager.AddNamespace in VS help for a description)
>
> XmlNamespaceManager nsmgr = new XmlNamespaceManager(xDoc .NameTable);
> // Create a namespace manager
> nsmgr.AddNamespace("default", http://www.microsoft.com/msi/patch); //
> Add the default namespace with a prefix of "default"; could be any
> character string e.g. "aa"
>
> XmlNode xTargetProductNode =
> xRoot.SelectSingleNode("default:TargetProduct", nsmgr); // Use the
> prefix in the XPath expression and pass the namespace manager
> XmlNodeList xNodeList = xRoot.SelectNodes("default:TargetProduct",
> nsmgr); // Use the prefix in the XPath expression
> and pass the namespace manager
>
> Regards
>
>
> "John Bowman john.bowman@thermo.com>" <<Remove this before reply> wrote in
> message news:u$iHqrqGGHA.608@TK2MSFTNGP14.phx.gbl...
>> Hi All,
>>
>> I'm fairly new to XML, so I presume I'm doing something obviously dense
>> here, but here it goes. Below is an XML file that was extracted from a
>> test Windows Installer .MSP (patch) file using the
>> MsiExtractPatchXMLData() method and directly written to disk as a test.
>> On the surface, it seems to me to be valid XML since IE can load &
>> display it.
>>
>> <MsiPatch xmlns="http://www.microsoft.com/msi/patch_applicability.xsd"
>> SchemaVersion="1.0.0.0"
>> PatchGUID="{2AAC52C8-0F60-481F-852D-116CDE7EBE0D}" MinMsiVersion="3">
>> <TargetProduct MinMsiVersion="200">
>> <TargetProductCode
>> Validate="true">{C2E2F155-71DD-458A-966B-3C231CFB5E7D}</TargetProductCode>
>> <TargetVersion Validate="true" ComparisonType="LessThanOrEqual"
>> ComparisonFilter="MajorMinorUpdate">1.00.0000</TargetVersion>
>> <TargetLanguage Validate="false">1033</TargetLanguage>
>> <UpdatedLanguages>1033</UpdatedLanguages>
>> <UpgradeCode
>> Validate="true">{1C18A718-D408-4D74-B2C6-0F6A932CE841}</UpgradeCode>
>> </TargetProduct>
>>
>> <TargetProductCode>{C2E2F155-71DD-458A-966B-3C231CFB5E7D}</TargetProductCode>
>> <SequenceData>
>> <PatchFamily>C2E2F15571DD458A966B3C231CFB5E7D</PatchFamily>
>> <Sequence>0.0.17219.55500</Sequence>
>> <Attributes>0</Attributes>
>> </SequenceData>
>> </MsiPatch>
>>
>> Now that I can actually "see" the XML for testing purposes I want to
>> extract some information from it, but it always fails to get anything.
>> For example, what's funtionally wrong with the following code? It throws
>> an exception: "Object reference not set to an instance of an object."
>> when it hits the MessageBox.Show line. When I check the LocalName of
>> xRoot, it correctly shows "MsiPatch", but fails to get the
>> xTargetProductNode, or any other nodes below the root node. Using
>> SelectNodes to get an XmlNodeList doesn't work either. The only way I can
>> seem to get the info is by looping through the ChildNodes (and comparing
>> their LocalNames to the tag I'm looking for) instead of directly with a
>> simple XPath. What am I doing wrong?
>>
>> if(File.Exists(FileSpec) == true)
>> {
>> XmlDocument xDoc = new XmlDocument();
>> xDoc.Load(DEF_OUTPUT_FILENAME);
>> XmlNode xRoot = xDoc.DocumentElement;
>> XmlNode xTargetProductNode = xRoot.SelectSingleNode("TargetProduct");
>> //XmlNodeList xNodeList = xRoot.SelectNodes("TargetProduct"); ///Also
>> fails to find anything and the xNodeList.Count = 0;
>> MessageBox.Show(xTargetProductNode.LocalName);
>> }
>> else
>> {
>> MessageBox.Show("Unable to read file:" +
>> Environment.NewLine +
>> FileSpec);
>> }
>>
>>
>> Thanks in advance for the help,
>>
>> --
>> John C. Bowman
>> Software Engineer
>> Thermo Electron Scientific Instruments Div.
>> <Remove this before reply> john.bowman@thermo.com
>>
>
>