C# WinForm进度条实现:首先是进度条窗体,需要在上面添加进度条,然后去掉ControlBox。除此外,还要增加一个方法,用来控制进度条的增加幅 度,具体如下:
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1. /// ﹤summary﹥
2. /// Increase process bar
3. /// ﹤/summary﹥ //C# WinForm进度条实现
4. /// ﹤param name="nValue"﹥the value increased﹤/param﹥
5. /// ﹤returns﹥﹤/returns﹥
6. public bool Increase( int nValue )
7. {
8. if( nValue ﹥ 0 )
9. {
10. if( prcBar.Value + nValue ﹤ prcBar.Maximum )
11. {
12. prcBar.Value += nValue;
13. return true;
14. }
15. else
16. {
17. prcBar.Value = prcBar.Maximum;
18. this.Close();
19. return false;
20. }
21. }
22. return false;
23. }
2. /// Increase process bar
3. /// ﹤/summary﹥ //C# WinForm进度条实现
4. /// ﹤param name="nValue"﹥the value increased﹤/param﹥
5. /// ﹤returns﹥﹤/returns﹥
6. public bool Increase( int nValue )
7. {
8. if( nValue ﹥ 0 )
9. {
10. if( prcBar.Value + nValue ﹤ prcBar.Maximum )
11. {
12. prcBar.Value += nValue;
13. return true;
14. }
15. else
16. {
17. prcBar.Value = prcBar.Maximum;
18. this.Close();
19. return false;
20. }
21. }
22. return false;
23. }
C# WinForm进度条实现之主窗体:
如何进行操作了,首先需要定义两个私有成员,一个委托。其中一个私有成员是保存当前进度条窗体对象,另一个是保存委托方法(即增加进度条尺度),具 体如下:
1. private frmProcessBar myProcessBar = null;
2. private delegate bool IncreaseHandle( int nValue );
3. private IncreaseHandle myIncrease = null;
2. private delegate bool IncreaseHandle( int nValue );
3. private IncreaseHandle myIncrease = null;
C# WinForm进度条实现之在主窗体中提供函数来打开进度条窗体,如下:
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1. /// ﹤summary﹥
2. /// Open process bar window
3. /// ﹤/summary﹥
4. private void ShowProcessBar()
5. {
6. myProcessBar = new frmProcessBar();
7.
8. // Init increase event
9. myIncrease =
10. new IncreaseHandle( myProcessBar.Increase );
11. myProcessBar.ShowDialog();
12. myProcessBar = null;
13. }
2. /// Open process bar window
3. /// ﹤/summary﹥
4. private void ShowProcessBar()
5. {
6. myProcessBar = new frmProcessBar();
7.
8. // Init increase event
9. myIncrease =
10. new IncreaseHandle( myProcessBar.Increase );
11. myProcessBar.ShowDialog();
12. myProcessBar = null;
13. }
C# WinForm进度条实现之开始创建线程来运行,具体如下:
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1. /// ﹤summary﹥
2. /// Sub thread function
3. /// ﹤/summary﹥
4. private void ThreadFun()
5. {
6. MethodInvoker mi =
7. new MethodInvoker( ShowProcessBar );
8. this.BeginInvoke( mi );
9.
10. Thread.Sleep( 1000 );
11. //Sleep a while to show window
12.
13. bool blnIncreased = false;
14. object objReturn = null;
15. do
16. {
17. Thread.Sleep( 50 );
18. objReturn = this.Invoke(
19. this.myIncrease,
20. new object[]{ 2 } );
21. blnIncreased = (bool)objReturn ;
22. }
23. while( blnIncreased );
24. }
2. /// Sub thread function
3. /// ﹤/summary﹥
4. private void ThreadFun()
5. {
6. MethodInvoker mi =
7. new MethodInvoker( ShowProcessBar );
8. this.BeginInvoke( mi );
9.
10. Thread.Sleep( 1000 );
11. //Sleep a while to show window
12.
13. bool blnIncreased = false;
14. object objReturn = null;
15. do
16. {
17. Thread.Sleep( 50 );
18. objReturn = this.Invoke(
19. this.myIncrease,
20. new object[]{ 2 } );
21. blnIncreased = (bool)objReturn ;
22. }
23. while( blnIncreased );
24. }
注意以上,在打开进度条窗体和增加进度条进度的时候,一个用的是BeginInvoke,一个是Invoke,这里的区别是BeginInvoke 不需要等待方法运行完毕,而Invoke是要等待方法运行完毕。还有一点,此处用返回值来判断进度条是否到头了,如果需要有其他的控制,可以类似前面的方 法来进行扩展。
C# WinForm进度条实现之启动线程,可以如下:
1. Thread thdSub = new Thread(
2. new ThreadStart( ThreadFun ) );
3. thdSub.Start();
2. new ThreadStart( ThreadFun ) );
3. thdSub.Start();
这样,一个用模式打开进度条窗体就做完了。
C# WinForm进度条实现的基本情况就向你介绍到这里,希望对你学习和了解C# WinForm进度条实现有所帮助。