???? ????? ?????? ????? ????? ??? ????? C# ???? ????

???? ?????? ???? ??????
???? ID: 323116 - ?? ???????? ?? ?????? ??? ?? ?? ???? ???? ???? ??.
?? ???? ?? Microsoft Visual Basic .NET ??????? ?? ???, ?????323088.
??? ?? ??????? ???? | ??? ?? ??????? ????

?? ????? ??

??????

????????? ???? ?? ?? ???? ?? ???? ?? simple, ????? ????? ?? ???UserControl?????, ????? ?? ??? ??????? ????ProgressBar???????? ???

?? ????? ????????? ???ProgressBar????????, ???? ??????? ?????? Microsoft Windows ??????? ???????? ActiveX ???????? ?? ??? ?? ?????? ??? ?? ????? ????? ??? ??? ???? ??? ?? ??????? ?? ????????? ???? ?? ??? ?? ????? ?????????????????, ?????? ???? ?? ????? ???????? ????? ??? Smooth scrolling produces a solid block of color that represents the progress, and standard scrolling appears segmented and is made up of a series of small blocks or rectangles.

TheProgressBarcontrol that is included with Microsoft Visual C# supports only the standard setting.

The sample code in this article illustrates how to create a control that supports the following properties:
  • ???????. This property obtains or sets the lower value for the range of valid values for progress. The default value of this property is zero (0); you cannot set this property to a negative value.
  • Maximum. ?? ??? obtains ?? ???? ???? ?? ??? ????? ????? ?? ?????? ?? ??? ???? ??? ?? ??? ???? ??? ?? ??? ?? ??????? ??? ?? 100 ???
  • Value:. ?? ??? obtains ?? ?????? ?? ??????? ???? ?? ??? ???? ??? ??? ?????? ??? ???? ????? ???????????????????? ????????? ?????
  • ProgressBarColor. ?? ??? obtains ?? ?????? ????? ?? ??? ??? ???? ???

??? ????? ProgressBar ???????? ?????

  1. Windows ???????? ????????? ??? ??? ????????? ????? ??? ????? C# ???? ?? ???, ????? ????? ?? ???? ????:
    1. Microsoft Visual Studio ??????? ?????
    2. ????? ???????????? ??,????? ????-????? ????, ?? ???? ????????????.
    3. ???????? ?????????????? ????? ???, ????? ????????? C#?? ???????????????? ???????? ????-????? ????, ?? ???? ???Windows ??????? ????????? ?????????? ???????????????.

      ???:Visual Studio .NET 2003, ????? ????????? C# ??????????? ????????? C#.
    4. ????????????? ???,SmoothProgressBar?? ????-????? ????, ?? ???? ???OK.
    5. ????????? ???????????, ??? ??????? ???? ??????? UserControl1.cs ?? SmoothProgressBar.cs ???? ?? ??? ?? ??? ??????
    6. ?? ??? ??? ????? ???UserControl????????, ????????? ????????? ???UserControl1???? ?? ???SmoothProgressBar.
  2. ?? ????? ??, ?? ?? ???????? ?? ???? ?? ?????????? inherit ?? ?? ??? ?????? ???????? ?? ??????? ???? ?? ??? ???????? ??????????? ?????? ???????,ProgressBar???? ??sealed?? ??????? ?? ?? ?? ???? ????? ?????, ?? ???? ?? ???????? ????? ??????

    SmoothProgressBar.cs ?????, UserControl ?? ??? ???? ??? ????? ??? ???????

    ???:Visual Studio .NET 2003, ??? ?????? ??? UserControl ??? ???? ?? ???? ??????? ? Windows ??????? ??????? ??? ????? ???? ??? ? ??? ?? ??? ????
    int min = 0;	// Minimum value for progress range
    int max = 100;	// Maximum value for progress range
    int val = 0;		// Current progress
    Color BarColor = Color.Blue;		// Color of progress meter
    
    protected override void OnResize(EventArgs e)
    {
    	// Invalidate the control to get a repaint.
    	this.Invalidate();
    }
    
    protected override void OnPaint(PaintEventArgs e)
    {
    	Graphics g = e.Graphics;
    	SolidBrush brush = new SolidBrush(BarColor);
    	float percent = (float)(val - min) / (float)(max - min);
    	Rectangle rect = this.ClientRectangle;
    
    	// Calculate area for drawing the progress.
    	rect.Width = (int)((float)rect.Width * percent);
    
    	// Draw the progress meter.
    	g.FillRectangle(brush, rect);
    
    	// Draw a three-dimensional border around the control.
    	Draw3DBorder(g);
    
    	// Clean up.
    	brush.Dispose();
    	g.Dispose();		
    }
    
    public int Minimum
    {
    	get
    	{
    		return min;
    	}
    
    	set
    	{
    		// Prevent a negative value.
    		if (value < 0)
    		{
    			min = 0;
    		}
    		
    		// Make sure that the minimum value is never set higher than the maximum value.
    		if (value > max)
    		{
    			min = value;
    			min = value;
    		}
    		
    		// Ensure value is still in range
    		if (val < min)
    		{
    			val = min;
    		}
    
    		// Invalidate the control to get a repaint.
    		this.Invalidate();
    	}
    }
    
    public int Maximum
    {
    	get
    	{
    		return max;
    	}
    
    	set
    	{
    		// Make sure that the maximum value is never set lower than the minimum value.
    		if (value < min)
    		{
    			min = value;
    		}
    
    		max = value;
    
    		// Make sure that value is still in range.
    		if (val > max)
    		{
    			val = max;
    		}
    
    		// Invalidate the control to get a repaint.
    		this.Invalidate();
    	}
    }
    
    public int Value
    {
    	get
    	{
    		return val;
    	}
    
    	set
    	{
    		int oldValue = val;
    
    		// Make sure that the value does not stray outside the valid range.
    		if (value < min)
    		{
    			val = min;
    		}
    		else if (value > max)
    		{
    			val = max;
    		}
    		else
    		{
    			val = value;
    		}
    
    		// Invalidate only the changed area.
    		float percent;
    
    		Rectangle newValueRect = this.ClientRectangle;
    		Rectangle oldValueRect = this.ClientRectangle;
    
    		// Use a new value to calculate the rectangle for progress.
    		percent = (float)(val - min) / (float)(max - min);
    		newValueRect.Width = (int)((float)newValueRect.Width * percent);
    
    		// Use an old value to calculate the rectangle for progress.
    		percent = (float)(oldValue - min) / (float)(max - min);
    		oldValueRect.Width = (int)((float)oldValueRect.Width * percent);
    
    		Rectangle updateRect = new Rectangle();
    		
    		// Find only the part of the screen that must be updated.
    		if (newValueRect.Width > oldValueRect.Width)
    		{
    			updateRect.X = oldValueRect.Size.Width;
    			updateRect.Width = newValueRect.Width - oldValueRect.Width;
    		}
    		else
    		{
    			updateRect.X = newValueRect.Size.Width;
    			updateRect.Width = oldValueRect.Width - newValueRect.Width;
    		}
    
    		updateRect.Height = this.Height;
    
    		// Invalidate the intersection region only.
    		this.Invalidate(updateRect);
    	}
    }
    
    public Color ProgressBarColor
    {
    	get
    	{
    		return BarColor;
    	}
    
    	set
    	{
    		BarColor = value;
    
    		// Invalidate the control to get a repaint.
    		this.Invalidate();
    	}
    }
    
    private void Draw3DBorder(Graphics g)
    {
    	int PenWidth = (int)Pens.White.Width;
    
    	g.DrawLine(Pens.DarkGray, 
    		new Point(this.ClientRectangle.Left, this.ClientRectangle.Top),
    		new Point(this.ClientRectangle.Width - PenWidth, this.ClientRectangle.Top));
    	g.DrawLine(Pens.DarkGray,
    		new Point(this.ClientRectangle.Left, this.ClientRectangle.Top), 
    		new Point(this.ClientRectangle.Left, this.ClientRectangle.Height - PenWidth));
    	g.DrawLine(Pens.White,
    		new Point(this.ClientRectangle.Left, this.ClientRectangle.Height - PenWidth), 
    		new Point(this.ClientRectangle.Width - PenWidth, this.ClientRectangle.Height - PenWidth));
    	g.DrawLine(Pens.White,
    		new Point(this.ClientRectangle.Width - PenWidth, this.ClientRectangle.Top), 
    		new Point(this.ClientRectangle.Width - PenWidth, this.ClientRectangle.Height - PenWidth));
    } 
    					
  3. ????? ????????????? ??,?????? ?????????????? ?? ??????? ???? ???? ?? ????

?? ????? ??????? ????????? ?????

  1. ????? ???????????? ??,????? ????-????? ????, ?? ???? ????????????.
  2. ???????? ????????? ??????????? ????? ???, ????? ????????? C#?? ???????????????? ??????????? ????,Windows ??????? ??????????? ????????????????? ????-????? ????, ?? ???? ???OK.

    ???:Visual Studio .NET 2003, ????? ????????? C# ??????????? ????????? C#.
  3. ?? ?? ?????????? ?? ?????? ?? ???, ????? ????? ?? ???? ????SmoothProgressBar??????? ????????:
    1. ????? ????????????? ??,????? ????? ???? ?????.

      ???:Visual Studio .NET 2003, ????? ????????? ????? ???????? ?????? ????????? ????? ???? ?????.
    2. ????? ????.NET ????? ?????? ?? ????? ????..
    3. ????? ????,????????? ???? ??? SmoothProgressBar.dll ????, ?????? ??? ????? ??? ?? ?????? ????? "??? ????? ProgressBar ???????? ?????"????
    4. ????? ????,OK. ?? ?????SmoothProgressBar???????? ????? ????? ??? ????? ???
    5. ?? ?? ?????????? ?? ??????SmoothProgressBarWindows ????????? ????????? ?? ??????? ??? ?? ???????? ????? ????? ?? ?????
  4. ?????? ???????????????? ?? ??? ???????? ????? ????? ??? ?? ?????
  5. ????? ??? ??????????? ??????????????????:
    if (this.smoothProgressBar1.Value > 0)
    {
    	this.smoothProgressBar1.Value--;
    	this.smoothProgressBar2.Value++;
    }
    else
    {
    	this.timer1.Enabled = false;
    } 
    					
  6. ?????? ?????????????? ?? ??? ???????? ????? ????? ??? ?? ?????
  7. ????? ??? ??????????? ????,?? ????????????????:
    this.smoothProgressBar1.Value = 100;
    this.smoothProgressBar2.Value = 0;
    			
    this.timer1.Interval = 1;
    this.timer1.Enabled = true; 
    					
  8. ????? ???????? ???????? ??,???????????? ????????? ?? ??????
  9. ??? ????? ????? ????? ??? ?? ?? ?????? ?? ???? ????????? ??? "????" ??? ?? ?????? ?? ?????? ???? increasing ????? ?? ????????? ???? ??, ?? ???? ?????? ?????? ???? ????? ???? ?? ?? ???? ????? ????? ?? ??? ????????? ???? ???

???

???? ID: 323116 - ????? ???????: 29 ??????? 2010 - ??????: 4.0
???? ???? ???? ??:
  • Microsoft Visual C# 2008 Express Edition
  • Microsoft Visual C# 2005 Express Edition
??????: 
kbsweptvs2008 kbhowtomaster kbmt KB323116 KbMthi
???? ?????? ????????
??????????: ?? ???? ?? ???? ??????? ?? ????? ?? Microsoft ????-?????? ?????????? ?????? ?????? ???? ??? ??. Microsoft ???? ??? ????-???????? ?? ????-???????? ????? ?????? ?? ???? ???????? ???? ?? ???? ????? ????? ??? ?? ??? ?????? ?? ???? ???? ???? ??? ????? ??. ???????, ????-???????? ???? ????? ???? ???? ???? ???. ?????, ????????, ?????-???? ?? ??????? ?? ???????? ?? ???? ???, ???? ?? ??? ?????? ???? ???? ??? ????? ??? ?? ???? ??. Microsoft ??????? ??? ???? ?? ?????? ?? ??????????, ????????? ?? ??? ?????? ?? ???? ????? ?? ???? ???????? ?? ??? ???? ????? ?? ??? ????????? ???? ??. Microsoft ????-?????? ?????????? ?? ????? ?????? ?? ?? ??? ??.
?????????? ?? ??????? ????????? ??????? ??:323116

??????????? ???

 

Contact us for more help

Contact us for more help
Connect with Answer Desk for expert help.
Get more support from smallbusiness.support.microsoft.com