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style=3D"BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; =
BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: =
#e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; =
WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: =
windowtext 0.5pt solid">
<DIV><IMG =
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop><SPAN style=3D"COLOR: #008000">//</SPAN><SPAN=20
style=3D"COLOR: =
#008000">&nbsp;Command&nbsp;pattern&nbsp;--&nbsp;Structural&nbsp;example&=
nbsp;&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #0000ff">using</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;System;<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;"Command"</SPAN><SPAN=20
style=3D"COLOR: #008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #0000ff">abstract</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">class</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;Command<BR><IMG=20
id=3DCodehighlighter1_94_282_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_94_282_Open_Text.style.display=3D'none'; =
Codehighlighter1_94_282_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_94_282_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockSta=
rt.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_94_282_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_94_282_Closed_Text.style.display=3D'none'; =
Codehighlighter1_94_282_Open_Image.style.display=3D'inline'; =
Codehighlighter1_94_282_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.=
gif"=20
align=3Dtop></SPAN><SPAN id=3DCodehighlighter1_94_282_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_94_282_Open_Text><SPAN style=3D"COLOR: =
#000000">{<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop>&nbsp;&nbsp;</SPAN><SPAN style=3D"COLOR: =
#008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;Fields</SPAN><SPAN style=3D"COLOR: =
#008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: =
#000000">&nbsp;&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">protected</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;Receiver&nbsp;receiver;<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop>&nbsp;&nbsp;</SPAN><SPAN style=3D"COLOR: =
#008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;Constructors</SPAN><SPAN=20
style=3D"COLOR: #008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: =
#000000">&nbsp;&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">public</SPAN><SPAN=20
style=3D"COLOR: =
#000000">&nbsp;Command(&nbsp;Receiver&nbsp;receiver&nbsp;)<BR><IMG=20
id=3DCodehighlighter1_198_232_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_198_232_Open_Text.style.display=3D'none'; =
Codehighlighter1_198_232_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_198_232_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlock=
Start.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_198_232_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_198_232_Closed_Text.style.display=3D'none'; =
Codehighlighter1_198_232_Open_Image.style.display=3D'inline'; =
Codehighlighter1_198_232_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlo=
ck.gif"=20
align=3Dtop>&nbsp;&nbsp;</SPAN><SPAN =
id=3DCodehighlighter1_198_232_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_198_232_Open_Text><SPAN style=3D"COLOR: =
#000000">{<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">this</SPAN><SPAN=20
style=3D"COLOR: #000000">.receiver&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #000000">=3D</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;receiver;<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlock=
End.gif"=20
align=3Dtop>&nbsp;&nbsp;}</SPAN></SPAN><SPAN style=3D"COLOR: =
#000000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop>&nbsp;&nbsp;</SPAN><SPAN style=3D"COLOR: =
#008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;Methods</SPAN><SPAN style=3D"COLOR: =
#008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: =
#000000">&nbsp;&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">abstract</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">public</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">void</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;Execute();<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd=
.gif"=20
align=3Dtop>}</SPAN></SPAN><SPAN style=3D"COLOR: #000000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;"ConcreteCommand"</SPAN><SPAN=20
style=3D"COLOR: #008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #0000ff">class</SPAN><SPAN=20
style=3D"COLOR: =
#000000">&nbsp;ConcreteCommand&nbsp;:&nbsp;Command<BR><IMG=20
id=3DCodehighlighter1_338_509_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_338_509_Open_Text.style.display=3D'none'; =
Codehighlighter1_338_509_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_338_509_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockSta=
rt.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_338_509_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_338_509_Closed_Text.style.display=3D'none'; =
Codehighlighter1_338_509_Open_Image.style.display=3D'inline'; =
Codehighlighter1_338_509_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.=
gif"=20
align=3Dtop></SPAN><SPAN id=3DCodehighlighter1_338_509_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_338_509_Open_Text><SPAN style=3D"COLOR: =
#000000">{<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop>&nbsp;&nbsp;</SPAN><SPAN style=3D"COLOR: =
#008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;Constructors</SPAN><SPAN=20
style=3D"COLOR: #008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: =
#000000">&nbsp;&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">public</SPAN><SPAN=20
style=3D"COLOR: =
#000000">&nbsp;ConcreteCommand(&nbsp;Receiver&nbsp;receiver&nbsp;)&nbsp;:=
<BR><IMG=20
id=3DCodehighlighter1_428_429_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_428_429_Open_Text.style.display=3D'none'; =
Codehighlighter1_428_429_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_428_429_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlock=
Start.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_428_429_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_428_429_Closed_Text.style.display=3D'none'; =
Codehighlighter1_428_429_Open_Image.style.display=3D'inline'; =
Codehighlighter1_428_429_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlo=
ck.gif"=20
align=3Dtop>&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">base</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;(&nbsp;receiver&nbsp;)&nbsp;</SPAN><SPAN=20
id=3DCodehighlighter1_428_429_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_428_429_Open_Text><SPAN=20
style=3D"COLOR: #000000">{}</SPAN></SPAN><SPAN style=3D"COLOR: =
#000000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop>&nbsp;&nbsp;</SPAN><SPAN style=3D"COLOR: =
#008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;Methods</SPAN><SPAN style=3D"COLOR: =
#008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: =
#000000">&nbsp;&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">public</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">override</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">void</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;Execute()<BR><IMG=20
id=3DCodehighlighter1_480_507_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_480_507_Open_Text.style.display=3D'none'; =
Codehighlighter1_480_507_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_480_507_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlock=
Start.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_480_507_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_480_507_Closed_Text.style.display=3D'none'; =
Codehighlighter1_480_507_Open_Image.style.display=3D'inline'; =
Codehighlighter1_480_507_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlo=
ck.gif"=20
align=3Dtop>&nbsp;&nbsp;</SPAN><SPAN =
id=3DCodehighlighter1_480_507_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_480_507_Open_Text><SPAN style=3D"COLOR: =
#000000">{<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop>&nbsp;&nbsp;&nbsp;&nbsp;receiver.Action();<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlock=
End.gif"=20
align=3Dtop>&nbsp;&nbsp;}</SPAN></SPAN><SPAN style=3D"COLOR: =
#000000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd=
.gif"=20
align=3Dtop>}</SPAN></SPAN><SPAN style=3D"COLOR: #000000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;"Receiver"</SPAN><SPAN=20
style=3D"COLOR: #008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #0000ff">class</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;Receiver<BR><IMG=20
id=3DCodehighlighter1_541_638_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_541_638_Open_Text.style.display=3D'none'; =
Codehighlighter1_541_638_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_541_638_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockSta=
rt.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_541_638_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_541_638_Closed_Text.style.display=3D'none'; =
Codehighlighter1_541_638_Open_Image.style.display=3D'inline'; =
Codehighlighter1_541_638_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.=
gif"=20
align=3Dtop></SPAN><SPAN id=3DCodehighlighter1_541_638_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_541_638_Open_Text><SPAN style=3D"COLOR: =
#000000">{<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop>&nbsp;&nbsp;</SPAN><SPAN style=3D"COLOR: =
#008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;Methods</SPAN><SPAN style=3D"COLOR: =
#008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: =
#000000">&nbsp;&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">public</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">void</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;Action()<BR><IMG=20
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