Web.config 加密解密

    /// <summary>
    /// web.config 加密
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void EncryptConnStrings_Click(object sender, EventArgs e)
    {
        // Get configuration information about Web.config
        Configuration config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath);

        // Let's work with the <connectionStrings> section
        ConfigurationSection connectionStrings = config.GetSection("connectionStrings");
        if (connectionStrings != null)
            // Only encrypt the section if it is not already protected
            if (!connectionStrings.SectionInformation.IsProtected)
            {
                // Encrypt the <connectionStrings> section using the DataProtectionConfigurationProvider provider
                connectionStrings.SectionInformation.ProtectSection("DataProtectionConfigurationProvider");
                config.Save();
                
                // Refresh the Web.config display
                DisplayWebConfig();
            }
    }
    /// <summary>
    /// web.config 解密
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void DecryptConnStrings_Click(object sender, EventArgs e)
    {
        // Get configuration information about Web.config
        Configuration config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath);

        // Let's work with the <connectionStrings> section
        ConfigurationSection connectionStrings = config.GetSection("connectionStrings");
        if (connectionStrings != null)
            // Only decrypt the section if it is protected
            if (connectionStrings.SectionInformation.IsProtected)
            {
                // Decrypt the <connectionStrings> section
                connectionStrings.SectionInformation.UnprotectSection();
                config.Save();

                // Refresh the Web.config display
                DisplayWebConfig();
            }
    }