面临在ASP.NET中创建用户控件的问题 [英] Facing problem in creating user control in ASP.NET

问题描述

我正在尝试创建一个用户控件，我在下面给出了键入的代码 -

我首先打开一个网站。然后单击FILE，Take New Project。选择类库，添加引用System.web在it.delete class1页面中添加另一个名为input的类。我在其中键入以下代码 -

使用system; 
 使用 system.web.ui.webcontrols; 
 命名空间 controlLibrary {
  class 输入：webcontrol 
 {
  string  txt，cap; 
  public   string  txt {
 
  get  { return  txt;} 
  set  {txt =  value ;} 
} 
  public  字符串上限{
 获取 {返回上限;} 
  set  {cap =  value ;} 
} 
}  
 
视觉工作室给出了变量txt和cap已经存在的错误。并且不要让我的程序构建。
解决方案
 
对于您的情况，您有两种可能的解决方案。
 
  1。私有变量 
 
 string txt，cap; - 将它们重命名为
 
 
  string  _txt，_cap; 
 
 
和重写属性
 
 
  public   string  txt 
 {
  get  { return  _txt;} 
  set  {_ txt =  value ;} 
} 
  public   string  cap 
 {
  get  { return  _cap;} 
  set  {_ cap = 价值;} 
} 
 
 
  2。使用自动属性。更好更清洁： 
 
 
 
 
  class 输入：webcontrol 
 {
  public   string  txt { get ;  set ;} 
  public  字符串 cap {获取; 设置;} 
} 
 
 
 
i am trying to create a user control, in which i have typed code given below-

 I first open a website.then click FILE ,Take New Project .select class library, add reference of System.web in it.delete class1 page and add another class named input in it.I typed following code in it-

Using system;
using system.web.ui.webcontrols;
namespace controlLibrary{
class input:webcontrol
{
  string txt, cap;
public string txt{

get{return txt;}
set{txt=value;}
}
 public string cap{
get{return cap;}
set{cap=value;}
}
}




in this code visual studio gives error that variables txt and cap are already exist.and dont let my program build.
解决方案
For your case, you have two possible solutions.

1. Private variables 

string txt, cap; - rename them to 

string _txt, _cap;


and rewrite properties to 

public string txt
{
    get{return _txt;}
    set{_txt  = value;}
}
public string cap
{
    get{return _cap;}
    set{_cap  = value;}
}


2. Use auto-properties. Better and cleaner:



class input:webcontrol
{
    public string txt{get;set;}
    public string cap {get;set;}
}


                        
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