I have 2 textboxes. When I click submit, i want to add whatevers in the text
box1 as username and whatevers in textbox2 as userid into an xml file. How do
I do that in ASP.NET using vb.net?
My xml file look like this:
<?xml version="1.0" encoding="utf-8" ?>
<!-- format is <user>userid</user> -->
<userdata>
<user name="Username1">
<userid>abc1</userid>
</user>
</userdata>
9  1733 
Just construct a string as follows:
Dim myXml As String = "<?xml version="1.0" encoding="utf-8" ?>" &
ControlChars.CrLf _
& "<!-- format is <user>userid</user> -->" & ControlChars.CrLf _
& "<userdata>" & ControlChars.CrLf _
& ControlChars.Tab & "<user name=" & ControlChars.Quote & textBox1.Text
& ControlChart.Quote & ">" & ControlChars.CrLf _
& ControlChars.Tab & ControlChars.Tab & "<userid>" & textBox2.Text &
"</userid>" & ControlChars.CrLf _
& ControlChars.Tab & "</user>" & ControlChars.CrLf _
& "</userdata>"
Or you could omit the tabs and carriage returns as they are ingnored by xml
parser anyhow.
Alternatively, you could create an XML document and use .Net XML library to
add nodes into it and then save the result into a file (string or stream)...
"Rocky" wrote: I have 2 textboxes. When I click submit, i want to add whatevers in the text
box1 as username and whatevers in textbox2 as userid into an xml file. How do
I do that in ASP.NET using vb.net?
My xml file look like this:
<?xml version="1.0" encoding="utf-8" ?>
<!-- format is <user>userid</user> -->
<userdata>
<user name="Username1">
<userid>abc1</userid>
</user>
</userdata>
how does it know what file to update?
"Sergey Poberezovskiy" wrote: Just construct a string as follows:
Dim myXml As String = "<?xml version="1.0" encoding="utf-8" ?>" &
ControlChars.CrLf _
& "<!-- format is <user>userid</user> -->" & ControlChars.CrLf _
& "<userdata>" & ControlChars.CrLf _
& ControlChars.Tab & "<user name=" & ControlChars.Quote & textBox1.Text
& ControlChart.Quote & ">" & ControlChars.CrLf _
& ControlChars.Tab & ControlChars.Tab & "<userid>" & textBox2.Text &
"</userid>" & ControlChars.CrLf _
& ControlChars.Tab & "</user>" & ControlChars.CrLf _
& "</userdata>"
Or you could omit the tabs and carriage returns as they are ingnored by xml
parser anyhow.
Alternatively, you could create an XML document and use .Net XML library to
add nodes into it and then save the result into a file (string or stream)...
"Rocky" wrote:
I have 2 textboxes. When I click submit, i want to add whatevers in the text
box1 as username and whatevers in textbox2 as userid into an xml file. How do
I do that in ASP.NET using vb.net?
My xml file look like this:
<?xml version="1.0" encoding="utf-8" ?>
<!-- format is <user>userid</user> -->
<userdata>
<user name="Username1">
<userid>abc1</userid>
</user>
</userdata>
Not sure what are your rules to pick a file, but if you need to update an
existing xml file you could use something similar to the following:
Dim xmlDoc As XmlDocument = New XmlDocument()
xmlDoc.Load(fileName)
Dim xPath As String = ""//user[@name='" & textBox1.Text & "']"
Dim root As XmlNode = xmlDoc.DocumentElement
Dim node As XmlNode = root.SelectSingleNode(xPath)
If node Is Nothing Then
node = xmlDoc.CreateElement("user")
node.Attributes.Add(node.CreateAttribute("name", textBox1.Text))
' add userid node to user here
...
' now add created node to the document
root.ChildNodes.Add(node)
Else
' update the existing node
node.SelectSingleNode("./userid").Value = textBox2.Text
End If
xmlDoc.Save(fileName)
I am not sure about the syntax, as I do not have VS in front of me - but you
can check the help if something does not compile...
And do not forget to wrap the whole thing into Try..Catch block
"Rocky" wrote: how does it know what file to update?
"Sergey Poberezovskiy" wrote:
Just construct a string as follows:
Dim myXml As String = "<?xml version="1.0" encoding="utf-8" ?>" &
ControlChars.CrLf _
& "<!-- format is <user>userid</user> -->" & ControlChars.CrLf _
& "<userdata>" & ControlChars.CrLf _
& ControlChars.Tab & "<user name=" & ControlChars.Quote & textBox1.Text
& ControlChart.Quote & ">" & ControlChars.CrLf _
& ControlChars.Tab & ControlChars.Tab & "<userid>" & textBox2.Text &
"</userid>" & ControlChars.CrLf _
& ControlChars.Tab & "</user>" & ControlChars.CrLf _
& "</userdata>"
Or you could omit the tabs and carriage returns as they are ingnored by xml
parser anyhow.
Alternatively, you could create an XML document and use .Net XML library to
add nodes into it and then save the result into a file (string or stream)...
"Rocky" wrote:
I have 2 textboxes. When I click submit, i want to add whatevers in the text
box1 as username and whatevers in textbox2 as userid into an xml file. How do
I do that in ASP.NET using vb.net?
My xml file look like this:
<?xml version="1.0" encoding="utf-8" ?>
<!-- format is <user>userid</user> -->
<userdata>
<user name="Username1">
<userid>abc1</userid>
</user>
</userdata>
When I put this code into visual studio, i'm getting a lot of errors
underlined in blue. Can you try it, then you'll see what i'm talking about.
"Sergey Poberezovskiy" wrote: Not sure what are your rules to pick a file, but if you need to update an
existing xml file you could use something similar to the following:
Dim xmlDoc As XmlDocument = New XmlDocument()
xmlDoc.Load(fileName)
Dim xPath As String = ""//user[@name='" & textBox1.Text & "']"
Dim root As XmlNode = xmlDoc.DocumentElement
Dim node As XmlNode = root.SelectSingleNode(xPath)
If node Is Nothing Then
node = xmlDoc.CreateElement("user")
node.Attributes.Add(node.CreateAttribute("name", textBox1.Text))
' add userid node to user here
...
' now add created node to the document
root.ChildNodes.Add(node)
Else
' update the existing node
node.SelectSingleNode("./userid").Value = textBox2.Text
End If
xmlDoc.Save(fileName)
I am not sure about the syntax, as I do not have VS in front of me - but you
can check the help if something does not compile...
And do not forget to wrap the whole thing into Try..Catch block
"Rocky" wrote:
how does it know what file to update?
"Sergey Poberezovskiy" wrote:
Just construct a string as follows:
Dim myXml As String = "<?xml version="1.0" encoding="utf-8" ?>" &
ControlChars.CrLf _
& "<!-- format is <user>userid</user> -->" & ControlChars.CrLf _
& "<userdata>" & ControlChars.CrLf _
& ControlChars.Tab & "<user name=" & ControlChars.Quote & textBox1.Text
& ControlChart.Quote & ">" & ControlChars.CrLf _
& ControlChars.Tab & ControlChars.Tab & "<userid>" & textBox2.Text &
"</userid>" & ControlChars.CrLf _
& ControlChars.Tab & "</user>" & ControlChars.CrLf _
& "</userdata>"
Or you could omit the tabs and carriage returns as they are ingnored by xml
parser anyhow.
Alternatively, you could create an XML document and use .Net XML library to
add nodes into it and then save the result into a file (string or stream)...
"Rocky" wrote:
> I have 2 textboxes. When I click submit, i want to add whatevers in the text
> box1 as username and whatevers in textbox2 as userid into an xml file. How do
> I do that in ASP.NET using vb.net?
>
> My xml file look like this:
> <?xml version="1.0" encoding="utf-8" ?>
> <!-- format is <user>userid</user> -->
> <userdata>
> <user name="Username1">
> <userid>abc1</userid>
> </user>
> </userdata>
The following code should compile just fine (provided that you have textBox1
and textBox2 TextBoxes on your form):
Try
Dim fileName As String = "myFile.xml"
Dim userName As String = textBox1.Text
Dim userId As String = textBox2.Text
Dim xmlDoc As XmlDocument = New XmlDocument
xmlDoc.Load(fileName)
Dim xPath As String = "//user[@name='" & userName & "''"
Dim root As XmlNode = xmlDoc.DocumentElement
Dim node As XmlNode = root.SelectSingleNode(xPath)
If node Is Nothing Then
node = xmlDoc.CreateElement("user")
' append attribute
Dim attr As XmlAttribute =
CType(xmlDoc.CreateNode(XmlNodeType.Attribute, "name", Nothing), XmlAttribute)
attr.Value = userName
node.Attributes.Append(attr)
' append userId node
Dim uidNode As XmlNode = xmlDoc.CreateElement("userid")
uidNode.AppendChild(xmlDoc.CreateTextNode(userId))
node.AppendChild(uidNode)
' append user node
root.AppendChild(node)
Else
Dim txtNode As XmlNode = node.SelectSingleNode("./userid").FirstChild
If TypeOf txtNode Is XmlText Then
txtNode.Value = userId
End If
End If
xmlDoc.Save(fileName)
Catch ex As Exception
System.Diagnostics.Debug.Write(ex.ToString)
End Try
HTH
"Rocky" wrote: When I put this code into visual studio, i'm getting a lot of errors
underlined in blue. Can you try it, then you'll see what i'm talking about.
"Sergey Poberezovskiy" wrote:
Not sure what are your rules to pick a file, but if you need to update an
existing xml file you could use something similar to the following:
Dim xmlDoc As XmlDocument = New XmlDocument()
xmlDoc.Load(fileName)
Dim xPath As String = ""//user[@name='" & textBox1.Text & "']"
Dim root As XmlNode = xmlDoc.DocumentElement
Dim node As XmlNode = root.SelectSingleNode(xPath)
If node Is Nothing Then
node = xmlDoc.CreateElement("user")
node.Attributes.Add(node.CreateAttribute("name", textBox1.Text))
' add userid node to user here
...
' now add created node to the document
root.ChildNodes.Add(node)
Else
' update the existing node
node.SelectSingleNode("./userid").Value = textBox2.Text
End If
xmlDoc.Save(fileName)
I am not sure about the syntax, as I do not have VS in front of me - but you
can check the help if something does not compile...
And do not forget to wrap the whole thing into Try..Catch block
"Rocky" wrote:
how does it know what file to update?
"Sergey Poberezovskiy" wrote:
> Just construct a string as follows:
>
> Dim myXml As String = "<?xml version="1.0" encoding="utf-8" ?>" &
> ControlChars.CrLf _
> & "<!-- format is <user>userid</user> -->" & ControlChars.CrLf _
> & "<userdata>" & ControlChars.CrLf _
> & ControlChars.Tab & "<user name=" & ControlChars.Quote & textBox1.Text
> & ControlChart.Quote & ">" & ControlChars.CrLf _
> & ControlChars.Tab & ControlChars.Tab & "<userid>" & textBox2.Text &
> "</userid>" & ControlChars.CrLf _
> & ControlChars.Tab & "</user>" & ControlChars.CrLf _
> & "</userdata>"
>
> Or you could omit the tabs and carriage returns as they are ingnored by xml
> parser anyhow.
>
> Alternatively, you could create an XML document and use .Net XML library to
> add nodes into it and then save the result into a file (string or stream)...
>
> "Rocky" wrote:
>
> > I have 2 textboxes. When I click submit, i want to add whatevers in the text
> > box1 as username and whatevers in textbox2 as userid into an xml file. How do
> > I do that in ASP.NET using vb.net?
> >
> > My xml file look like this:
> > <?xml version="1.0" encoding="utf-8" ?>
> > <!-- format is <user>userid</user> -->
> > <userdata>
> > <user name="Username1">
> > <userid>abc1</userid>
> > </user>
> > </userdata>
I'll give it a try! Thank you sooo much!
"Sergey Poberezovskiy" wrote: The following code should compile just fine (provided that you have textBox1
and textBox2 TextBoxes on your form):
Try
Dim fileName As String = "myFile.xml"
Dim userName As String = textBox1.Text
Dim userId As String = textBox2.Text
Dim xmlDoc As XmlDocument = New XmlDocument
xmlDoc.Load(fileName)
Dim xPath As String = "//user[@name='" & userName & "''"
Dim root As XmlNode = xmlDoc.DocumentElement
Dim node As XmlNode = root.SelectSingleNode(xPath)
If node Is Nothing Then
node = xmlDoc.CreateElement("user")
' append attribute
Dim attr As XmlAttribute =
CType(xmlDoc.CreateNode(XmlNodeType.Attribute, "name", Nothing), XmlAttribute)
attr.Value = userName
node.Attributes.Append(attr)
' append userId node
Dim uidNode As XmlNode = xmlDoc.CreateElement("userid")
uidNode.AppendChild(xmlDoc.CreateTextNode(userId))
node.AppendChild(uidNode)
' append user node
root.AppendChild(node)
Else
Dim txtNode As XmlNode = node.SelectSingleNode("./userid").FirstChild
If TypeOf txtNode Is XmlText Then
txtNode.Value = userId
End If
End If
xmlDoc.Save(fileName)
Catch ex As Exception
System.Diagnostics.Debug.Write(ex.ToString)
End Try
HTH
"Rocky" wrote:
When I put this code into visual studio, i'm getting a lot of errors
underlined in blue. Can you try it, then you'll see what i'm talking about.
"Sergey Poberezovskiy" wrote:
Not sure what are your rules to pick a file, but if you need to update an
existing xml file you could use something similar to the following:
Dim xmlDoc As XmlDocument = New XmlDocument()
xmlDoc.Load(fileName)
Dim xPath As String = ""//user[@name='" & textBox1.Text & "']"
Dim root As XmlNode = xmlDoc.DocumentElement
Dim node As XmlNode = root.SelectSingleNode(xPath)
If node Is Nothing Then
node = xmlDoc.CreateElement("user")
node.Attributes.Add(node.CreateAttribute("name", textBox1.Text))
' add userid node to user here
...
' now add created node to the document
root.ChildNodes.Add(node)
Else
' update the existing node
node.SelectSingleNode("./userid").Value = textBox2.Text
End If
xmlDoc.Save(fileName)
I am not sure about the syntax, as I do not have VS in front of me - but you
can check the help if something does not compile...
And do not forget to wrap the whole thing into Try..Catch block
"Rocky" wrote:
> how does it know what file to update?
>
> "Sergey Poberezovskiy" wrote:
>
> > Just construct a string as follows:
> >
> > Dim myXml As String = "<?xml version="1.0" encoding="utf-8" ?>" &
> > ControlChars.CrLf _
> > & "<!-- format is <user>userid</user> -->" & ControlChars.CrLf _
> > & "<userdata>" & ControlChars.CrLf _
> > & ControlChars.Tab & "<user name=" & ControlChars.Quote & textBox1.Text
> > & ControlChart.Quote & ">" & ControlChars.CrLf _
> > & ControlChars.Tab & ControlChars.Tab & "<userid>" & textBox2.Text &
> > "</userid>" & ControlChars.CrLf _
> > & ControlChars.Tab & "</user>" & ControlChars.CrLf _
> > & "</userdata>"
> >
> > Or you could omit the tabs and carriage returns as they are ingnored by xml
> > parser anyhow.
> >
> > Alternatively, you could create an XML document and use .Net XML library to
> > add nodes into it and then save the result into a file (string or stream)...
> >
> > "Rocky" wrote:
> >
> > > I have 2 textboxes. When I click submit, i want to add whatevers in the text
> > > box1 as username and whatevers in textbox2 as userid into an xml file. How do
> > > I do that in ASP.NET using vb.net?
> > >
> > > My xml file look like this:
> > > <?xml version="1.0" encoding="utf-8" ?>
> > > <!-- format is <user>userid</user> -->
> > > <userdata>
> > > <user name="Username1">
> > > <userid>abc1</userid>
> > > </user>
> > > </userdata>
If you forgotten to import System.XML namespace, you'll have your VS.NET IDE
compile about it can't find the object you're talking about.
"Rocky" <Ro***@discussions.microsoft.com> ¼¶¼g©ó¶l¥ó·s»D:C6********************************* *@microsoft.com... When I put this code into visual studio, i'm getting a lot of errors
underlined in blue. Can you try it, then you'll see what i'm talking
about.
"Sergey Poberezovskiy" wrote:
Not sure what are your rules to pick a file, but if you need to update an
existing xml file you could use something similar to the following:
Dim xmlDoc As XmlDocument = New XmlDocument()
xmlDoc.Load(fileName)
Dim xPath As String = ""//user[@name='" & textBox1.Text & "']"
Dim root As XmlNode = xmlDoc.DocumentElement
Dim node As XmlNode = root.SelectSingleNode(xPath)
If node Is Nothing Then
node = xmlDoc.CreateElement("user")
node.Attributes.Add(node.CreateAttribute("name", textBox1.Text))
' add userid node to user here
...
' now add created node to the document
root.ChildNodes.Add(node)
Else
' update the existing node
node.SelectSingleNode("./userid").Value = textBox2.Text
End If
xmlDoc.Save(fileName)
I am not sure about the syntax, as I do not have VS in front of me - but
you
can check the help if something does not compile...
And do not forget to wrap the whole thing into Try..Catch block
"Rocky" wrote:
> how does it know what file to update?
>
> "Sergey Poberezovskiy" wrote:
>
> > Just construct a string as follows:
> >
> > Dim myXml As String = "<?xml version="1.0" encoding="utf-8" ?>" &
> > ControlChars.CrLf _
> > & "<!-- format is <user>userid</user> -->" & ControlChars.CrLf _
> > & "<userdata>" & ControlChars.CrLf _
> > & ControlChars.Tab & "<user name=" & ControlChars.Quote &
> > textBox1.Text
> > & ControlChart.Quote & ">" & ControlChars.CrLf _
> > & ControlChars.Tab & ControlChars.Tab & "<userid>" &
> > textBox2.Text &
> > "</userid>" & ControlChars.CrLf _
> > & ControlChars.Tab & "</user>" & ControlChars.CrLf _
> > & "</userdata>"
> >
> > Or you could omit the tabs and carriage returns as they are ingnored
> > by xml
> > parser anyhow.
> >
> > Alternatively, you could create an XML document and use .Net XML
> > library to
> > add nodes into it and then save the result into a file (string or
> > stream)...
> >
> > "Rocky" wrote:
> >
> > > I have 2 textboxes. When I click submit, i want to add whatevers in
> > > the text
> > > box1 as username and whatevers in textbox2 as userid into an xml
> > > file. How do
> > > I do that in ASP.NET using vb.net?
> > >
> > > My xml file look like this:
> > > <?xml version="1.0" encoding="utf-8" ?>
> > > <!-- format is <user>userid</user> -->
> > > <userdata>
> > > <user name="Username1">
> > > <userid>abc1</userid>
> > > </user>
> > > </userdata>
I tried this code, it compiles without any errors. I run it without any
errors, but it doesn't create a file called myfile.xml.
"Sergey Poberezovskiy" wrote: The following code should compile just fine (provided that you have textBox1
and textBox2 TextBoxes on your form):
Try
Dim fileName As String = "myFile.xml"
Dim userName As String = textBox1.Text
Dim userId As String = textBox2.Text
Dim xmlDoc As XmlDocument = New XmlDocument
xmlDoc.Load(fileName)
Dim xPath As String = "//user[@name='" & userName & "''"
Dim root As XmlNode = xmlDoc.DocumentElement
Dim node As XmlNode = root.SelectSingleNode(xPath)
If node Is Nothing Then
node = xmlDoc.CreateElement("user")
' append attribute
Dim attr As XmlAttribute =
CType(xmlDoc.CreateNode(XmlNodeType.Attribute, "name", Nothing), XmlAttribute)
attr.Value = userName
node.Attributes.Append(attr)
' append userId node
Dim uidNode As XmlNode = xmlDoc.CreateElement("userid")
uidNode.AppendChild(xmlDoc.CreateTextNode(userId))
node.AppendChild(uidNode)
' append user node
root.AppendChild(node)
Else
Dim txtNode As XmlNode = node.SelectSingleNode("./userid").FirstChild
If TypeOf txtNode Is XmlText Then
txtNode.Value = userId
End If
End If
xmlDoc.Save(fileName)
Catch ex As Exception
System.Diagnostics.Debug.Write(ex.ToString)
End Try
HTH
"Rocky" wrote:
When I put this code into visual studio, i'm getting a lot of errors
underlined in blue. Can you try it, then you'll see what i'm talking about.
"Sergey Poberezovskiy" wrote:
Not sure what are your rules to pick a file, but if you need to update an
existing xml file you could use something similar to the following:
Dim xmlDoc As XmlDocument = New XmlDocument()
xmlDoc.Load(fileName)
Dim xPath As String = ""//user[@name='" & textBox1.Text & "']"
Dim root As XmlNode = xmlDoc.DocumentElement
Dim node As XmlNode = root.SelectSingleNode(xPath)
If node Is Nothing Then
node = xmlDoc.CreateElement("user")
node.Attributes.Add(node.CreateAttribute("name", textBox1.Text))
' add userid node to user here
...
' now add created node to the document
root.ChildNodes.Add(node)
Else
' update the existing node
node.SelectSingleNode("./userid").Value = textBox2.Text
End If
xmlDoc.Save(fileName)
I am not sure about the syntax, as I do not have VS in front of me - but you
can check the help if something does not compile...
And do not forget to wrap the whole thing into Try..Catch block
"Rocky" wrote:
> how does it know what file to update?
>
> "Sergey Poberezovskiy" wrote:
>
> > Just construct a string as follows:
> >
> > Dim myXml As String = "<?xml version="1.0" encoding="utf-8" ?>" &
> > ControlChars.CrLf _
> > & "<!-- format is <user>userid</user> -->" & ControlChars.CrLf _
> > & "<userdata>" & ControlChars.CrLf _
> > & ControlChars.Tab & "<user name=" & ControlChars.Quote & textBox1.Text
> > & ControlChart.Quote & ">" & ControlChars.CrLf _
> > & ControlChars.Tab & ControlChars.Tab & "<userid>" & textBox2.Text &
> > "</userid>" & ControlChars.CrLf _
> > & ControlChars.Tab & "</user>" & ControlChars.CrLf _
> > & "</userdata>"
> >
> > Or you could omit the tabs and carriage returns as they are ingnored by xml
> > parser anyhow.
> >
> > Alternatively, you could create an XML document and use .Net XML library to
> > add nodes into it and then save the result into a file (string or stream)...
> >
> > "Rocky" wrote:
> >
> > > I have 2 textboxes. When I click submit, i want to add whatevers in the text
> > > box1 as username and whatevers in textbox2 as userid into an xml file. How do
> > > I do that in ASP.NET using vb.net?
> > >
> > > My xml file look like this:
> > > <?xml version="1.0" encoding="utf-8" ?>
> > > <!-- format is <user>userid</user> -->
> > > <userdata>
> > > <user name="Username1">
> > > <userid>abc1</userid>
> > > </user>
> > > </userdata>
Rocky,
If you put a breakpoint to the line inside Catch block i wold say that you
should see an error similar to "File not found", and this error must be
generated by
xmlDoc.Load(fileName) line.
The code I used assumed that you already have a valid xml file, rather than
create one from within the application.
"Rocky" wrote: I tried this code, it compiles without any errors. I run it without any
errors, but it doesn't create a file called myfile.xml.
"Sergey Poberezovskiy" wrote:
The following code should compile just fine (provided that you have textBox1
and textBox2 TextBoxes on your form):
Try
Dim fileName As String = "myFile.xml"
Dim userName As String = textBox1.Text
Dim userId As String = textBox2.Text
Dim xmlDoc As XmlDocument = New XmlDocument
xmlDoc.Load(fileName)
Dim xPath As String = "//user[@name='" & userName & "''"
Dim root As XmlNode = xmlDoc.DocumentElement
Dim node As XmlNode = root.SelectSingleNode(xPath)
If node Is Nothing Then
node = xmlDoc.CreateElement("user")
' append attribute
Dim attr As XmlAttribute =
CType(xmlDoc.CreateNode(XmlNodeType.Attribute, "name", Nothing), XmlAttribute)
attr.Value = userName
node.Attributes.Append(attr)
' append userId node
Dim uidNode As XmlNode = xmlDoc.CreateElement("userid")
uidNode.AppendChild(xmlDoc.CreateTextNode(userId))
node.AppendChild(uidNode)
' append user node
root.AppendChild(node)
Else
Dim txtNode As XmlNode = node.SelectSingleNode("./userid").FirstChild
If TypeOf txtNode Is XmlText Then
txtNode.Value = userId
End If
End If
xmlDoc.Save(fileName)
Catch ex As Exception
System.Diagnostics.Debug.Write(ex.ToString)
End Try
HTH
"Rocky" wrote:
When I put this code into visual studio, i'm getting a lot of errors
underlined in blue. Can you try it, then you'll see what i'm talking about.
"Sergey Poberezovskiy" wrote:
> Not sure what are your rules to pick a file, but if you need to update an
> existing xml file you could use something similar to the following:
>
> Dim xmlDoc As XmlDocument = New XmlDocument()
> xmlDoc.Load(fileName)
> Dim xPath As String = ""//user[@name='" & textBox1.Text & "']"
> Dim root As XmlNode = xmlDoc.DocumentElement
> Dim node As XmlNode = root.SelectSingleNode(xPath)
> If node Is Nothing Then
> node = xmlDoc.CreateElement("user")
> node.Attributes.Add(node.CreateAttribute("name", textBox1.Text))
> ' add userid node to user here
> ...
> ' now add created node to the document
> root.ChildNodes.Add(node)
> Else
> ' update the existing node
> node.SelectSingleNode("./userid").Value = textBox2.Text
> End If
> xmlDoc.Save(fileName)
>
> I am not sure about the syntax, as I do not have VS in front of me - but you
> can check the help if something does not compile...
>
> And do not forget to wrap the whole thing into Try..Catch block
>
>
> "Rocky" wrote:
>
> > how does it know what file to update?
> >
> > "Sergey Poberezovskiy" wrote:
> >
> > > Just construct a string as follows:
> > >
> > > Dim myXml As String = "<?xml version="1.0" encoding="utf-8" ?>" &
> > > ControlChars.CrLf _
> > > & "<!-- format is <user>userid</user> -->" & ControlChars.CrLf _
> > > & "<userdata>" & ControlChars.CrLf _
> > > & ControlChars.Tab & "<user name=" & ControlChars.Quote & textBox1.Text
> > > & ControlChart.Quote & ">" & ControlChars.CrLf _
> > > & ControlChars.Tab & ControlChars.Tab & "<userid>" & textBox2.Text &
> > > "</userid>" & ControlChars.CrLf _
> > > & ControlChars.Tab & "</user>" & ControlChars.CrLf _
> > > & "</userdata>"
> > >
> > > Or you could omit the tabs and carriage returns as they are ingnored by xml
> > > parser anyhow.
> > >
> > > Alternatively, you could create an XML document and use .Net XML library to
> > > add nodes into it and then save the result into a file (string or stream)...
> > >
> > > "Rocky" wrote:
> > >
> > > > I have 2 textboxes. When I click submit, i want to add whatevers in the text
> > > > box1 as username and whatevers in textbox2 as userid into an xml file. How do
> > > > I do that in ASP.NET using vb.net?
> > > >
> > > > My xml file look like this:
> > > > <?xml version="1.0" encoding="utf-8" ?>
> > > > <!-- format is <user>userid</user> -->
> > > > <userdata>
> > > > <user name="Username1">
> > > > <userid>abc1</userid>
> > > > </user>
> > > > </userdata> This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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