private void fraMain_FormClosing(object sender, FormClosingEventArgs e)//窗体关闭时处理代码
{
e.Cancel = true; //取消窗体关闭事件
this.Visible = false; //隐藏主窗体
}==>
private void fraMain_FormClosing(object sender, FormClosingEventArgs e)//窗体关闭时处理代码
{
if ( e.CloseReason == CloseReason.UserClosing ){
e.Cancel = true; //取消窗体关闭事件
this.Visible = false; //隐藏主窗体
} }
{
e.Cancel = true; //取消窗体关闭事件
this.Visible = false; //隐藏主窗体
}==>
private void fraMain_FormClosing(object sender, FormClosingEventArgs e)//窗体关闭时处理代码
{
if ( e.CloseReason == CloseReason.UserClosing ){
e.Cancel = true; //取消窗体关闭事件
this.Visible = false; //隐藏主窗体
} }
// 摘要:
// Specifies the reason that a form was closed.
public enum CloseReason {
// 摘要:
// The cause of the closure was not defined or could not be determined.
None = 0,
//
// 摘要:
// The operating system is closing all applications before shutting down.
WindowsShutDown = 1,
//
// 摘要:
// The parent form of this multiple document interface (MDI) form is closing.
MdiFormClosing = 2,
//
// 摘要:
// The user is closing the form through the user interface (UI), for example
// by clicking the Close button on the form window, selecting Close from the
// window's control menu, or pressing ALT+F4.
UserClosing = 3,
//
// 摘要:
// The Microsoft Windows Task Manager is closing the application.
TaskManagerClosing = 4,
//
// 摘要:
// The owner form is closing.
FormOwnerClosing = 5,
//
// 摘要:
// The System.Windows.Forms.Application.Exit() method of the System.Windows.Forms.Application
// class was invoked.
ApplicationExitCall = 6,
}
}