有人检查这个并告诉我在课堂上获取价值的方法吗？ [英] someone check this and tell me way to access value in class?

问题描述

有人告诉我将按钮点击事件的价值传递给上课







< pre lang =cs> public partial class 登录：System.Web.UI.Page
{


protected void Page_Load（ object sender，EventArgs e）
{
}
public void Button1_Click（ object sender，EventArgs e）
{
String End_Address = TextBox2.Text;

//我将文本框值传递给字符串...在c＃





所以我想访问类文件中的字符串....

  public   class  harversine {
登录实例= 新登录（）; 
 字符串 valueEnd_Address = instance.End_Address; 

这是否正确？

解决方案

你可以这样做：

  public   partial   class 登录：System.Web.UI.Page 
 {
  public   String  End_Address =  string  .Empty; 
 
 受保护  void  Page_Load（对象发​​件人，EventArgs e）
 {
} 
  public   void  Button1_Click（ object  sender，EventArgs e）
 {
 End_Address = TextBox2.Text; 

然后访问它完全使用你所写的内容。

逻辑上它正确但你会不获取信息，因为实例将是一个不同的对象，而不是与客户端呈现的相同。相反，您可以尝试以下选项之一。



1.将end_address作为参数传递给构造函数以使用harversine类。

ex：在

后面的登录代码中，harversine inst = new harversine（TextBox2.Text）; 

2.在harversine类中声明属性EndAddress并分配vlaue点击事件背后的代码

ex：

 harversine inst = new harversine（）; inst.EndAddress = TextBox2.Text; 

您可以使用 C＃中的属性 [ ^ ]。

在 harversine 类中声明属性。

  private   string  _End_Address; 
  public   string  End_Address 
 {
  get  { return  _End_Address; } 
  set  {_End_Address =  value ; } 
} 

从登录页面设置。请参阅：

  public   void  Button1_Click （ object  sender，EventArgs e）
 {
 harversine obj =  new  harversine（ ）; 
 obj.End_Address = TextBox2.Text; 
} 

您可以在 harversine 类中访问它：

  public   void  SomeFunction（）
 {
  if （End_Address！=  null ）
  string  EndAdd = End_Address; 
} 

有关详细信息，请参阅以下链接：

C＃Property [ ^ ]

- Amit

someone tell me way to pass the value of button click event to class

public partial class Login : System.Web.UI.Page
{


    protected void Page_Load(object sender, EventArgs e)
    {
    }
    public void Button1_Click(object sender, EventArgs e)
    {
        String End_Address = TextBox2.Text; 

// i'm passing textbox value into string... in c#


so i want to access the string in class file....

public class harversine {
        Login instance = new Login();
        String valueEnd_Address = instance.End_Address;

is this correct or not?

解决方案

You could do this:

public partial class Login : System.Web.UI.Page
{
    public String End_Address = string.Empty;

    protected void Page_Load(object sender, EventArgs e)
    {
    }
    public void Button1_Click(object sender, EventArgs e)
    {
        End_Address = TextBox2.Text; 

Then to access it use exactly what you wrote.

Logically its correct but you will not get info as instance will be a differnt object and not the same what is rendered to the client. Instead you can try one of the following options.

1. Pass end_address as a paramater to the constructor to harversine class.
ex: In login code behind

harversine inst = new harversine(TextBox2.Text);

2. Declare a property EndAddress in harversine class and assign the vlaue in code behind click event
ex:

harversine inst = new harversine(); inst.EndAddress =TextBox2.Text;  

You can easily do it using Properties in C#[^].
Declare a Property in harversine class.

private string _End_Address;
public string End_Address
{
    get { return _End_Address; }
    set { _End_Address = value; }
}

Set it from login page. See this:

public void Button1_Click(object sender, EventArgs e)
{
    harversine obj = new harversine();
    obj.End_Address = TextBox2.Text;
}

You can access it in your harversine class:

public void SomeFunction()
{
    if(End_Address != null)
        string EndAdd = End_Address;
}

Refer the below link for more details:
C# Property[^]

--Amit

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