ApplicationSettingsBase.SettingsSaving 事件

定义

命名空间:

System.Configuration

程序集:

System.Configuration.ConfigurationManager.dll

包:

System.Configuration.ConfigurationManager v8.0.0

Source:

ApplicationSettingsBase.cs

发生在将值保存到数据存储区中之前。

public:
 event System::Configuration::SettingsSavingEventHandler ^ SettingsSaving;

public event System.Configuration.SettingsSavingEventHandler SettingsSaving;

member this.SettingsSaving : System.Configuration.SettingsSavingEventHandler 

Public Custom Event SettingsSaving As SettingsSavingEventHandler 

事件类型

SettingsSavingEventHandler

示例

下面的代码示例演示 SettingsSaving 类型 FormSettings的 对象的事件处理程序，该对象是派生自 ApplicationSettingsBase的包装类。 处理程序查询用户以保存当前应用程序设置属性值。 类概述中 ApplicationSettingsBase 列出了完整的代码示例。

private:
    void FormSettings_SettingsSaving(Object^ sender,
        CancelEventArgs^ e)
    {
        //Should check for settings changes first.
        ::DialogResult^ dialogResult = MessageBox::Show(
            "Save current values for application settings?",
            "Save Settings", MessageBoxButtons::YesNo);
        if (::DialogResult::No == dialogResult)
        {
            e->Cancel = true;
        }
    }

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;
    }
}

Private Sub frmSettings1_SettingsSaving(ByVal sender As Object, ByVal e As _
        CancelEventArgs) Handles frmSettings1.SettingsSaving
    'Should check for settings changes first.
    Dim dr As DialogResult = MessageBox.Show( _
        "Save current values for application settings?", "Save Settings", _
        MessageBoxButtons.YesNo)
    If (System.Windows.Forms.DialogResult.No = dr) Then
        e.Cancel = True
    End If
End Sub

注解

事件 SettingsSaving 在将应用程序设置属性存储到其关联的数据存储之前由 Save 方法引发。 关联的事件处理程序可以取消此事件。

另请参阅

• OnSettingsSaving(Object, CancelEventArgs)
• Save()