(Writing to Web.config file dynamically RSS

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  amersafi

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  240 Points

  114 Posts

  (Writing to Web.config file dynamically

  Jan 10, 2007 05:52 AM|LINK

  i have web.config that have more than value like this

  <appSettings>

   

  <add key="lang" value="en"/>

  <add key="langCode" value="cmsv9_lang"/>

  <add key="SiteURL" value="/CMS9_Ajax_Website"/>

  <add key="RealURL" value="/10.10.0.253"/>

  <add key="SiteUserUrl" value="/User"/>

  <add key="SiteAdminUrl" value="/Admin"/>

  <add key="ImageUrl" value="/Images"/>

  <add key="ScriptUrl" value="/JS"/>

  <add key="WordsFilePath" value="/App_Data/xml/Localization_word.xml"/>

  <add key="LanguagesFilePath" value="/App_Data/xml/Localization_Languages.xml"/>

   

   

  </appSettings>

  i can read this like this

   

  Dim i As Integer = 0

  Dim config As Configuration = WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath)

  Dim appSettings As AppSettingsSection = CType(config.GetSection("appSettings"), AppSettingsSection)

  Dim appKeys As String() = appSettings.Settings.AllKeys

  For i = 0 To appSettings.Settings.Count - 1

  objHT.Add(appSettings.Settings(appKeys(i)).Key, appSettings.Settings(appKeys(i)).Value)

  Next

  but my question how can i update or add value in web.config dynamically from code

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  Hope4sun

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  Re: (Writing to Web.config file dynamically

  Jan 10, 2007 10:59 AM|LINK

  This article covers the code to do it pretty much http://www.west-wind.com/WebLog/posts/8461.aspx but as stated, you need high trust permissions on the server to do it.
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  hannous

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  56 Posts

  Re: (Writing to Web.config file dynamically

  Jan 10, 2007 11:50 AM|LINK

  Here's how you can add a key:

  Dim FileLocation As String = "C:\Inetpub\wwwroot\YourProject\web.config"
      Dim NodeLocation As String = "configuration/appSettings"
  
  
      'Adds a key and value to the configuration file
      Public Function AddKey(ByVal strKey As String, ByVal strValue As String) As Boolean
          Dim xmlDoc As New XmlDocument
          'Change this to the location of your configuration file
          xmlDoc.Load(FileLocation)
          'Change this if node is different
          Dim appSettingsNode As XmlNode = xmlDoc.SelectSingleNode(NodeLocation)
          Try
              'Check if the node exists before adding it
              If (KeyExists(strKey)) Then
                  Throw New ArgumentException("Key name: <" + strKey + "> already exists in the configuration.")
              End If
              'You must have at least one key that can be empty
              Dim newChild As XmlNode = appSettingsNode.FirstChild.Clone
              newChild.Attributes("key").Value = strKey
              newChild.Attributes("value").Value = strValue
              appSettingsNode.AppendChild(newChild)
              xmlDoc.Save(FileLocation )
              Return True
          Catch ex As Exception
              Return False
          End Try
      End Function
  
  
      'Determines if a key exists
      Public Function KeyExists(ByVal strKey As String) As Boolean
          Dim xmlDoc As New XmlDocument
          xmlDoc.Load(FileLocation )
          Dim appSettingsNode As XmlNode = xmlDoc.SelectSingleNode(NodeLocation)
          Dim childNode As XmlNode
          For Each childNode In appSettingsNode
              If (childNode.Attributes("key").Value = strKey) Then
                  Return True
              End If
          Next
          Return False
      End Function

   
  Hassan Annous
  • Marked as answer by tmorton on Sep 18, 2007 02:01 PM
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  amersafi

  Member

  240 Points

  114 Posts

  Re: (Writing to Web.config file dynamically

  Jan 10, 2007 12:43 PM|LINK

  thank u that helped me
  • Edited by amersafi on Aug 02, 2007 05:27 AM
  • Edited by tmorton on Sep 18, 2007 02:01 PM
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  hajaworld

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  12 Posts

  Re: (Writing to Web.config file dynamically

  Sep 18, 2007 10:59 AM|LINK

  hi i am tried your concept,but it arise error when execute save  line

   error is;Access to the path is denied
  

  help me

  hajaworld@yahoo.co.in 

  by
  Haja
  mail id:hajaworld@yahoo.co.in
  Dotnet Developer
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  hannous

  Member

  203 Points

  56 Posts

  Re: (Writing to Web.config file dynamically

  Sep 18, 2007 11:09 AM|LINK

  Are you sure you have write access to that path?
  

   

  Hassan Annous
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  syedrizwansh...

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  14 Points

  10 Posts

  Re: (Writing to Web.config file dynamically

  Oct 18, 2007 05:34 AM|LINK

  This may help

  Use configSource attribute to manage Web.Config sections in ASP.Net 2.0

  http://rizwanshah.blogspot.com/2007/10/use-configsource-attribute-to-manage.html

   

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  kanthu2681

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  14 Posts

  Re: (Writing to Web.config file dynamically

  Jun 25, 2008 09:42 AM|LINK

  Here is my web.config file that i'm trying to update dynamically using Hannous code and I receive null as XmlNode. But this works only if i remove xmlns from the web.config. Could you please help me out as it is very urgent for me.

  <?xml version="1.0"?>
  <configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
    <configSections>
     
    <appSettings>
      <!-- point to the database you want to use-->
      <add key="ConnStr" value="Server=servername; database=databasename;Integrated Security=SSPI;Connect Timeout=0" />
      <!-- specify the full path of the rolespace.xml-->
      <add key="ROLESPACE" value="E:\webroot\OAWebService\oaweb.xml" />
      <add key="TOCLevelDepth" value="3" />
      <add key="SearchMax" value="500" />
    </appSettings>
   
  </configuration>

   

  Thanks!!!

  • Edited by kanthu2681 on Jun 25, 2008 09:44 AM
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  hannous

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  56 Posts

  Re: (Writing to Web.config file dynamically

  Jun 25, 2008 03:45 PM|LINK

  To care for the namespace, add the following:

  After:

   

  xmlDoc.Load(FileLocation)

   

  Add:

   

  Dim XmlNamespaceManager As System.Xml.XmlNamespaceManager = New System.Xml.XmlNamespaceManager(xmlDoc.NameTable)
  XmlNamespaceManager.AddNamespace("ns", "http://schemas.microsoft.com/.NetConfiguration/v2.0")

   

  Hassan Annous
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  kanthu2681

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  14 Posts

  Re: (Writing to Web.config file dynamically

  Jun 26, 2008 09:34 AM|LINK

  Hi Thanks for your prompt response. But It did not worked still the value is giving null for appsettingsNode.

  In the web.config file the namespace prefix is xmlns(which is reserve key word) and in the code we are using 'ns' as the prefix. Hope coz of this it failed.

  Kindly, let me know where i'm going wrong.