C# ApplicationSettingsBase类代码示例

partial class Form1 : Form
   {
       private FormSettings frmSettings1 = new FormSettings();

       public Form1()
       {
           InitializeComponent();
       }

       private void Form1_Load(object sender, EventArgs e)
       {
           this.FormClosing += new FormClosingEventHandler(Form1_FormClosing);

           //Associate settings property event handlers.
           frmSettings1.SettingChanging += new SettingChangingEventHandler(
                                               frmSettings1_SettingChanging);
           frmSettings1.SettingsSaving += new SettingsSavingEventHandler(
                                               frmSettings1_SettingsSaving);

           //Data bind settings properties with straightforward associations.
           Binding bndBackColor = new Binding("BackColor", frmSettings1, 
               "FormBackColor", true, DataSourceUpdateMode.OnPropertyChanged);
           this.DataBindings.Add(bndBackColor);
           Binding bndLocation = new Binding("Location", frmSettings1, 
               "FormLocation", true, DataSourceUpdateMode.OnPropertyChanged);
           this.DataBindings.Add(bndLocation);

           // Assign Size property, since databinding to Size doesn't work well.
            this.Size = frmSettings1.FormSize;

           //For more complex associations, manually assign associations.
           String savedText = frmSettings1.FormText;
           //Since there is no default value for FormText.
           if (savedText != null)
               this.Text = savedText;
       }

       private void Form1_FormClosing(object sender, FormClosingEventArgs e)
       {
           //Synchronize manual associations first.
           frmSettings1.FormText = this.Text + '.';
           frmSettings1.FormSize = this.Size;
           frmSettings1.Save();
       }

       private void btnBackColor_Click(object sender, EventArgs e)
       {
           if (DialogResult.OK == colorDialog1.ShowDialog())
           {
               Color c = colorDialog1.Color;
               this.BackColor = c;
           }
       }

       private void btnReset_Click(object sender, EventArgs e)
       {
           frmSettings1.Reset();
           this.BackColor = SystemColors.Control;
       }

       private void btnReload_Click(object sender, EventArgs e)
       {
           frmSettings1.Reload();
       }

       void frmSettings1_SettingChanging(object sender, SettingChangingEventArgs e)
       {
           tbStatus.Text = e.SettingName + ": " + e.NewValue;
       }

       void frmSettings1_SettingsSaving(object sender, CancelEventArgs e)
       {
           //Should check for settings changes first.
           DialogResult dr = MessageBox.Show(
                           "Save current values for application settings?",
                           "Save Settings", MessageBoxButtons.YesNo);
           if (DialogResult.No == dr)
           {
               e.Cancel = true;
           }
       }
   }

   //Application settings wrapper class
   sealed class FormSettings : ApplicationSettingsBase
   {
       [UserScopedSettingAttribute()]
       public String FormText
       {
           get { return (String)this["FormText"]; }
           set { this["FormText"] = value; }
       }

       [UserScopedSettingAttribute()]
       [DefaultSettingValueAttribute("0, 0")]
       public Point FormLocation
       {
           get { return (Point)(this["FormLocation"]); }
           set { this["FormLocation"] = value; }
       }

       [UserScopedSettingAttribute()]
       [DefaultSettingValueAttribute("225, 200")]
       public Size FormSize
       {
           get { return (Size)this["FormSize"]; }
           set { this["FormSize"] = value; }
       }

       [UserScopedSettingAttribute()]
       [DefaultSettingValueAttribute("LightGray")]
       public Color FormBackColor
       {
           get { return (Color)this["FormBackColor"]; }
           set { this["FormBackColor"] = value; }
       }
   }