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Save user settings in .Net Windows application

Posted on 2008-06-14
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I am writing a Windows application using C#.Net.  What is the preferred method for storing user settings/preferences without writing to the registry?
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Question by:ktmedlin
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7 Comments
 
LVL 11

Expert Comment

by:Anurag Agarwal
ID: 21787608
One way to put them in memory by Creating a singleton class & store the user settings.

Another way (Recommended) is to store this into database tables.

Anurag
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Author Comment

by:ktmedlin
ID: 21787634
The user's settings must be stored on the hard drive (not in memory) so that the same settings can be used when the user has closed and reopened the app.  Storing settings in a database is not an option.  Need to use a file of some type but don't know what kind.  I assume XML would be the best solution and I have heard of Settings.settings and App.config but I don't know which one to use or how to use them.
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Accepted Solution

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Anurag Agarwal earned 2000 total points
ID: 21787669
You can use a flat file that is a text file for storing the user specific data. In this flat file you can put settings like this

[UserId=""]
Maximize=1;
Toolbar=0;
---
---

[UserId=""]


When you read this text file you can read the key from 0 to 1 less then index of =.
& fopr reading the  value 1 + index of = to 1 less then index of ;

Another way is to use a XML file.
Make a empty xml file with default values with nodes

<UserSettings UserId="">
   <Maximize>1</Maximize>
   <ToolBar>0</ToolBar>
</UserSettings>

Now read this xml file in your code through XMLDocument & get the required values.

Don't use settings.settings & App.config for this as they contain application specific settings not user specific.


Anurag
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LVL 7

Expert Comment

by:Dauhee
ID: 21788446

READ SETTINGS:
dsConfig = New DataSet
dsConfig.ReadXml('c:\file.xml')
msgbox dsConfig.Tables(0).Rows(0).Item('mydatafield')

WRITE SETTINGS:
dsConfig.Tables(0).Rows(0).Item('mydatafield') = 'changed value'
dsConfig.AcceptChanges()
dsConfig.WriteXml('c:\file.xml')

XML FILE:
<?xml version="1.0" standalone="yes"?>
<Settings>
  <MYTABLE>
    <mydatafield>Hello there this is a setting</mydatafield>
    <anotherfield>bla bla Bla</anotherfield>
  </MYTABLE>
</Settings>
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LVL 1

Expert Comment

by:cherrera2001
ID: 21808739
One possible solution is if you saved the user settings in an object, to serialize the object to an xml file. This allows for a clean and easy way to save and retrieve the data. There is also an msdn article on different ways to approach this here: http://msdn.microsoft.com/en-us/library/ms973902.aspx.
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Author Closing Comment

by:ktmedlin
ID: 31467295
Im going with the XML file option.  Thanks to all the experts for the comments.
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