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Read / Write App.Config RRS feed

  • Question

  •  

     

    hi how can read/ wrtie access the app.config file, using C#.net,

     

    e.g i used to read app.config file connectstring, and i need to write[updated] the connectionstring using c#.net,

     

    any sample of code is available please leave ur suggestion

     

    kind regards

    syed

     

    Friday, December 7, 2007 7:26 AM

Answers

  • Hi, Syed,

     

    Based on my understanding, you want to know how to read and write your config file, don't you?

     

    To read the settings is quite easy.

    Suppose you have a ConnectionString named "connStr".

    Then you can get it like this.

    Code Block

    ConfigurationManager.ConnectionStrings["connStr"].ConnectionString

     

    To write the value to the config file, you will need a Configuration object.

    For example,

    Code Block

                Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

                config.ConnectionStrings.ConnectionStrings["connStr"].ConnectionString = "New Value";

                config.Save();

     

    More info

    http://msdn2.microsoft.com/en-us/library/system.configuration.configurationmanager.aspx

     

    Hope this helps,

    Regards

     

    Tuesday, December 11, 2007 7:12 AM

All replies

  • Hi, Syed,

     

    Based on my understanding, you want to know how to read and write your config file, don't you?

     

    To read the settings is quite easy.

    Suppose you have a ConnectionString named "connStr".

    Then you can get it like this.

    Code Block

    ConfigurationManager.ConnectionStrings["connStr"].ConnectionString

     

    To write the value to the config file, you will need a Configuration object.

    For example,

    Code Block

                Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

                config.ConnectionStrings.ConnectionStrings["connStr"].ConnectionString = "New Value";

                config.Save();

     

    More info

    http://msdn2.microsoft.com/en-us/library/system.configuration.configurationmanager.aspx

     

    Hope this helps,

    Regards

     

    Tuesday, December 11, 2007 7:12 AM
  • It gives the error message "Object Refrenecs not set to the instance of object"

    Please Help me
    thanks
    Wednesday, July 16, 2008 2:57 AM
  • try
    string MyConn=Properties.Settings.Default.YourConnectionString;
    Thursday, October 9, 2008 7:35 AM