how to change the webconfig file through programatically

Question

hi

how to we change the web.config settings through programatically i am able to access the settings but unable to write while i save it shows access is denied error in the save

the code is

static Configuration myConfig=WebConfigurationManager.OpenWebConfiguration("~/");
    static KeyValueConfigurationElement myElement = null;

   myelement.value="some xyx";
     myConfig.Save(); -->here it show error
        myConfig.Save(ConfigurationSaveMode.Modified);

Manikavelu Velayutham · Answer

Here is a complete code that will do all the manipulations like edit delete create encrypt and all the stuffs. http://www.dotnetspider.com/resources/17562-Edit-Delete-Create-Encrypt-sections.aspx Enjoy :)

Manikavelu Velayutham · Answer

Here is the way that you need. http://stackoverflow.com/questions/1300423/how-to-edit-an-external-web-config-file // the key of the setting string key = MyKey ; // the new value you want to change the setting to string value = This is my New Value! ; // the path to the web.config string path = @ C:\web.config ; // open your web.config so far this is the ONLY way i've found to do this without it wanting a virtual directory // even OpenExeConfiguration will not work var config = ConfigurationManager . OpenMappedExeConfiguration ( new ExeConfigurationFileMap () { ExeConfigFilename = path } ConfigurationUserLevel . None ); // now that we have our config grab the element out of the settings var element = config . AppSettings . Settings [ key ]; // it may be null if its not there already if ( element == null ) { // we'll handle it not being there by adding it with the new value config . AppSettings . Settings . Add ( key  value ); } else { // note: if you wanted to you could inspect the current value via element.Value // in this case its already present just update the value element . Value = value ; } // save the config minimal is key here if you dont want huge web.config bloat config . Save ( ConfigurationSaveMode . Minimal  true ); Before: xml version = 1.0 ?> key = MyKey value = OldValue /> name = myConnString connectionString = blah blah blah providerName = System.Data.SqlClient /> After: xml version = 1.0 ?> key = MyKey value = This is my New Value! /> name = myConnString connectionString = blah blah blah providerName = System.Data.SqlClient /> level = Full /> clientScriptsLocation = /aspnet_client/{0}/{1}/ />

Koteswararao Mallisetti · Answer

this is just xml file editing i want not in this way only in system.configuration classes model

Manikavelu Velayutham · Answer

Complete project is uploaded with this post. You can modify the web.config programatically. Sample code is also as below. private void Form1_Load( object sender EventArgs e) { XElement xml = XElement .Load( @D:\My Tools\ModifyConfig\ModifyConfig\web.config ); var connstrxml = xml.Descendants( connectionStrings ).Elements().First(); string connStr = connstrxml.Attribute( connectionString ).Value; //MessageBox.Show(connStr); string newConnString = string .Empty; string attribute = string .Empty; string value = string .Empty; string [] a = connStr.Split( ';' ); for ( int i = 0; i { string [] b = a[i].Split( '=' ); if (b.Length == 2) { attribute = b[0]; value = b[1]; if (attribute.Equals( Initial Catalog  StringComparison .OrdinalIgnoreCase)) { value = Manik DB ; } } newConnString = newConnString + attribute + = + value + ; ; } connstrxml.SetAttributeValue( connectionString  newConnString); xml.Save( @D:\My Tools\ModifyConfig\ModifyConfig\web.config ); }