VB   发布时间:2022-04-03  发布网站:大佬教程  code.js-code.com
大佬教程收集整理的这篇文章主要介绍了(转)在VB.NET中处理构造函数时值得注意的两个陈述大佬教程大佬觉得挺不错的,现在分享给大家,也给大家做个参考。
  在VB.NET中处理构造函数时,有两个陈述值得注意:

  (1)如果类型不包含任何实例构造函数声明,则VB.NET提供默认的构造函数;
  默认参数调用直接基类的无参数构造函数。如果基类没有可访问的无参数构造函数,则发生编译期错误。

  (2)构造函数不能继承;

  陈述(1)包含两个方面的信息:①是如果类型不包含任何实例构造函数声明,则VB.NET提供默认的构造函数,即下面的声明是允许的,在类Shape中我们没有显式声明任何构造函数,但是我们仍然可以通过VB.NET自动提供的无参数构造函数New()来实例化类;

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_0_83_Open_Text.style.display='none'; Codehighlighter1_0_83_Closed_Image.style.display='inline'; Codehighlighter1_0_83_Closed_Text.style.display='inline';" id="Codehighlighter1_0_83_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_0_83_Closed_Text.style.display='none'; Codehighlighter1_0_83_Open_Image.style.display='inline'; Codehighlighter1_0_83_Open_Text.style.display='inline';" id="Codehighlighter1_0_83_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedBlock.gif">

@H_544_22@moduleTest @H_741_25@moduleTest

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_20_72_Open_Text.style.display='none'; Codehighlighter1_20_72_Closed_Image.style.display='inline'; Codehighlighter1_20_72_Closed_Text.style.display='inline';" id="Codehighlighter1_20_72_Open_Image" style="display: inline" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_20_72_Closed_Text.style.display='none'; Codehighlighter1_20_72_Open_Image.style.display='inline'; Codehighlighter1_20_72_Open_Text.style.display='inline';" id="Codehighlighter1_20_72_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedSubBlock.gif">

PublicSub@H_970_27@main()

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/InBlock.gif">

Dimshape1AsShape=NewShape

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockEnd.gif">

EndSub

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedBlockEnd.gif">

EndModule

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/None.gif">


(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_93_161_Open_Text.style.display='none'; Codehighlighter1_93_161_Closed_Image.style.display='inline'; Codehighlighter1_93_161_Closed_Text.style.display='inline';" id="Codehighlighter1_93_161_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_93_161_Closed_Text.style.display='none'; Codehighlighter1_93_161_Open_Image.style.display='inline'; Codehighlighter1_93_161_Open_Text.style.display='inline';" id="Codehighlighter1_93_161_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedBlock.gif">

Public ClassShape

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_113_151_Open_Text.style.display='none'; Codehighlighter1_113_151_Closed_Image.style.display='inline'; Codehighlighter1_113_151_Closed_Text.style.display='inline';" id="Codehighlighter1_113_151_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_113_151_Closed_Text.style.display='none'; Codehighlighter1_113_151_Open_Image.style.display='inline'; Codehighlighter1_113_151_Open_Text.style.display='inline';" id="Codehighlighter1_113_151_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedSubBlock.gif">

PublicSubDraw()

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/InBlock.gif">

'someCodeshere.

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockEnd.gif">

EndSub

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedBlockEnd.gif">

EndClass

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/None.gif">


  ②是如果类型中包含有实例构造函数的声明,那么VB.NET不再提供默认的构造函数,例如,我们在类Shape中添加了一个带参数的构造函数,

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_7_144_Open_Text.style.display='none'; Codehighlighter1_7_144_Closed_Image.style.display='inline'; Codehighlighter1_7_144_Closed_Text.style.display='inline';" id="Codehighlighter1_7_144_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_7_144_Closed_Text.style.display='none'; Codehighlighter1_7_144_Open_Image.style.display='inline'; Codehighlighter1_7_144_Open_Text.style.display='inline';" id="Codehighlighter1_7_144_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedBlock.gif">

Public ClassShape

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/InBlock.gif">

Private_ptAsPoint

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_49_86_Open_Text.style.display='none'; Codehighlighter1_49_86_Closed_Image.style.display='inline'; Codehighlighter1_49_86_Closed_Text.style.display='inline';" id="Codehighlighter1_49_86_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_49_86_Closed_Text.style.display='none'; Codehighlighter1_49_86_Open_Image.style.display='inline'; Codehighlighter1_49_86_Open_Text.style.display='inline';" id="Codehighlighter1_49_86_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedSubBlock.gif">

PublicSubNew(pAsPoint)

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/InBlock.gif">

_pt
=p

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockEnd.gif">

EndSub

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_96_134_Open_Text.style.display='none'; Codehighlighter1_96_134_Closed_Image.style.display='inline'; Codehighlighter1_96_134_Closed_Text.style.display='inline';" id="Codehighlighter1_96_134_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_96_134_Closed_Text.style.display='none'; Codehighlighter1_96_134_Open_Image.style.display='inline'; Codehighlighter1_96_134_Open_Text.style.display='inline';" id="Codehighlighter1_96_134_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedSubBlock.gif">

PublicSubDraw()

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/InBlock.gif">

'someCodeshere.

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockEnd.gif">

EndSub

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedBlockEnd.gif">

EndClass

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/None.gif">


  那么,如果直接实例化类时,则会产生错误;

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/None.gif">

Dim shape1 As Shape = New Shape

  只能通过调用Shape类中显式声明的带参数的构造函数来实例化类,如下,

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/None.gif">

Dim shape1 As Shape = New Shape( New Point( 0 , 0 ))

  因此,如果要在类中同时使用无参数和带参数的构造函数,必须同时显式地声明两种构造函数。

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_7_191_Open_Text.style.display='none'; Codehighlighter1_7_191_Closed_Image.style.display='inline'; Codehighlighter1_7_191_Closed_Text.style.display='inline';" id="Codehighlighter1_7_191_Open_Image" style="display: inline" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_7_191_Closed_Text.style.display='none'; Codehighlighter1_7_191_Open_Image.style.display='inline'; Codehighlighter1_7_191_Open_Text.style.display='inline';" id="Codehighlighter1_7_191_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedBlock.gif">

Public ClassShape

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/InBlock.gif">

Private_ptAsPoint

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_49_86_Open_Text.style.display='none'; Codehighlighter1_49_86_Closed_Image.style.display='inline'; Codehighlighter1_49_86_Closed_Text.style.display='inline';" id="Codehighlighter1_49_86_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_49_86_Closed_Text.style.display='none'; Codehighlighter1_49_86_Open_Image.style.display='inline'; Codehighlighter1_49_86_Open_Text.style.display='inline';" id="Codehighlighter1_49_86_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedSubBlock.gif">

PublicSubNew()

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/InBlock.gif">

'someCodeshere.

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockEnd.gif">

EndSub

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_96_133_Open_Text.style.display='none'; Codehighlighter1_96_133_Closed_Image.style.display='inline'; Codehighlighter1_96_133_Closed_Text.style.display='inline';" id="Codehighlighter1_96_133_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_96_133_Closed_Text.style.display='none'; Codehighlighter1_96_133_Open_Image.style.display='inline'; Codehighlighter1_96_133_Open_Text.style.display='inline';" id="Codehighlighter1_96_133_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedSubBlock.gif">

PublicSubNew(pAsPoint)

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/InBlock.gif">

_pt
=p

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockEnd.gif">

EndSub

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_143_181_Open_Text.style.display='none'; Codehighlighter1_143_181_Closed_Image.style.display='inline'; Codehighlighter1_143_181_Closed_Text.style.display='inline';" id="Codehighlighter1_143_181_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_143_181_Closed_Text.style.display='none'; Codehighlighter1_143_181_Open_Image.style.display='inline'; Codehighlighter1_143_181_Open_Text.style.display='inline';" id="Codehighlighter1_143_181_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedSubBlock.gif">

PublicSubDraw()

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/InBlock.gif">

'someCodeshere.

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockEnd.gif">

EndSub

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedBlockEnd.gif">

EndClass

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/None.gif">



  陈述(2),构造函数不能继承,即,如果要使子类与基类有相同的构造函数,那么必须在每个子类中都显式的声明与基类构造相同的构造函数,例如:

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_19_187_Open_Text.style.display='none'; Codehighlighter1_19_187_Closed_Image.style.display='inline'; Codehighlighter1_19_187_Closed_Text.style.display='inline';" id="Codehighlighter1_19_187_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_19_187_Closed_Text.style.display='none'; Codehighlighter1_19_187_Open_Image.style.display='inline'; Codehighlighter1_19_187_Open_Text.style.display='inline';" id="Codehighlighter1_19_187_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedBlock.gif">

Public @H_741_25@musTinherit ClassShape

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/InBlock.gif">

Private_ptAsPoint

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_61_98_Open_Text.style.display='none'; Codehighlighter1_61_98_Closed_Image.style.display='inline'; Codehighlighter1_61_98_Closed_Text.style.display='inline';" id="Codehighlighter1_61_98_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_61_98_Closed_Text.style.display='none'; Codehighlighter1_61_98_Open_Image.style.display='inline'; Codehighlighter1_61_98_Open_Text.style.display='inline';" id="Codehighlighter1_61_98_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedSubBlock.gif">

PublicSubNew()

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/InBlock.gif">

'someCodeshere.

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockEnd.gif">

EndSub

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_108_145_Open_Text.style.display='none'; Codehighlighter1_108_145_Closed_Image.style.display='inline'; Codehighlighter1_108_145_Closed_Text.style.display='inline';" id="Codehighlighter1_108_145_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_108_145_Closed_Text.style.display='none'; Codehighlighter1_108_145_Open_Image.style.display='inline'; Codehighlighter1_108_145_Open_Text.style.display='inline';" id="Codehighlighter1_108_145_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedSubBlock.gif">

PublicSubNew(pAsPoint)

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/InBlock.gif">

_pt
=p

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockEnd.gif">

EndSub

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_168_187_Open_Text.style.display='none'; Codehighlighter1_168_187_Closed_Image.style.display='inline'; Codehighlighter1_168_187_Closed_Text.style.display='inline';" id="Codehighlighter1_168_187_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_168_187_Closed_Text.style.display='none'; Codehighlighter1_168_187_Open_Image.style.display='inline'; Codehighlighter1_168_187_Open_Text.style.display='inline';" id="Codehighlighter1_168_187_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedSubBlock.gif">

Public@H_741_25@mustOverride
SubDraw()

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedBlockEnd.gif">

EndClass

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/None.gif">


(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_197_370_Open_Text.style.display='none'; Codehighlighter1_197_370_Closed_Image.style.display='inline'; Codehighlighter1_197_370_Closed_Text.style.display='inline';" id="Codehighlighter1_197_370_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_197_370_Closed_Text.style.display='none'; Codehighlighter1_197_370_Open_Image.style.display='inline'; Codehighlighter1_197_370_Open_Text.style.display='inline';" id="Codehighlighter1_197_370_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedBlock.gif">

Public ClassLine

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/InBlock.gif">

InheritsShape

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_232_249_Open_Text.style.display='none'; Codehighlighter1_232_249_Closed_Image.style.display='inline'; Codehighlighter1_232_249_Closed_Text.style.display='inline';" id="Codehighlighter1_232_249_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_232_249_Closed_Text.style.display='none'; Codehighlighter1_232_249_Open_Image.style.display='inline'; Codehighlighter1_232_249_Open_Text.style.display='inline';" id="Codehighlighter1_232_249_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedSubBlock.gif">

PublicSubNew()

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockEnd.gif">

EndSub

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_259_302_Open_Text.style.display='none'; Codehighlighter1_259_302_Closed_Image.style.display='inline'; Codehighlighter1_259_302_Closed_Text.style.display='inline';" id="Codehighlighter1_259_302_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_259_302_Closed_Text.style.display='none'; Codehighlighter1_259_302_Open_Image.style.display='inline'; Codehighlighter1_259_302_Open_Text.style.display='inline';" id="Codehighlighter1_259_302_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedSubBlock.gif">

PublicSubNew(pAsPoint)

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/InBlock.gif">

@H_741_25@myBase
.New(p)

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockEnd.gif">

EndSub

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_322_360_Open_Text.style.display='none'; Codehighlighter1_322_360_Closed_Image.style.display='inline'; Codehighlighter1_322_360_Closed_Text.style.display='inline';" id="Codehighlighter1_322_360_Open_Image" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockStart.gif">

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="this.style.display='none'; Codehighlighter1_322_360_Closed_Text.style.display='none'; Codehighlighter1_322_360_Open_Image.style.display='inline'; Codehighlighter1_322_360_Open_Text.style.display='inline';" id="Codehighlighter1_322_360_Closed_Image" style="display: none" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ContractedSubBlock.gif">

PublicOverridesSubDraw()

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/InBlock.gif">

'someCodeshere.

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedSubBlockEnd.gif">

EndSub

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/ExpandedBlockEnd.gif">

EndClass

(转)在VB.NET中处理构造函数时值得注意的两个陈述s.width=650;" onclick="window.open("http://blog.51cto.com/viewpic.php?refimg=" + this.srC)" height="16" src="http://img.voidcn.com/vcimg/static/loading.png" width="11" align="top" data-src="http://www.cnblogs.com/Images/OutliningInDicators/None.gif">


  这一点非常重要而且也很有意义。因为我们往往倾向于认为子类继承了基类所有的属性和方法,这往往导致我们的程序出现编译错误。
  综合以上两个陈述,在实际编程中应遵循一个原则:在类中,无论是基类还是子类,显式地声明所有需要的无参数或带参数构造函数。遵循这个原则,既有利于提高编译正确代码的速度,也有利于自己和其他程序员理解代码。

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