如何在不同的类中访问gridview [英] how to access gridview in different class

问题描述

公共部分类WebFormAdmin_frmInternalMemo：System.Web.UI.Page { C }



在此class，我有一个ID = gvListMemo 的gridview



我需要在名为 public的类中访问此gridview class Task {} 放在文件夹AppCode / Utility / Task.cs



如何访问它？???

解决方案

你可以尝试这样..

  public   class 任务
 {
 
  public   void  DoSomeAction（System.Web.UI.WebControls.GridView gridView）
 {
  //  使用gridView对象，您可以执行所需的操作 
 
} 
 
} 

网格页面中的
，

任务objTask =  new  Task（）; 
 objTask.DoSomeAction（gvListMemo）; 
 

你好，



正如Karthik先生所说，你可以通过那个控制对于另一个类中的方法。就像这样：

 public class c1（）
 {
 public void method（控制c）
 {
 ////对您的控制执行操作
} 
 
} 
 
主要：
 
 c1 c = new c1（）; 
 c.method（any_control）; ///传递你的控制权
 
我也可以这样做：
 
 
公共类c1（）
 {
 
控制c; 
 public c1（对照c）
 {
 this.c = c; 
 
} 
 
 
 public void method（）
 {
 ////使用this.c做你想做的任何事，但是你必须将它输入到你想要的控件中。例如对一个文本框说，所以
 
 TextBox t =（TextBox）this.c; ///试试这个，有时会在写这个句子时引发运行时异常警惕。您必须了解基类和派生类之间的关系。 
 
} 
 
} 
 
 
在Main方法中：
 c1 c = new c1（any_control）; 

请注意，Control类是所有控件的基类（如果我错了，请更正我）。

所以为了使这个算法通用，我可以使用Control类型成为构造函数或方法的参数。



- 我使用了构造函数，因为它可能会发生在课堂初始化期间你想用那个控制执行一些操作





谢谢，

- 拉胡

public partial class WebFormAdmin_frmInternalMemo : System.Web.UI.Page { C}

In this class, I've a gridview with ID="gvListMemo"

I need to access this gridview in class named "public class Task { }" which is placed in the folder AppCode/Utility/Task.cs

how do I access it ????

解决方案

You can try like this..

public class Task
   {

       public void DoSomeAction(System.Web.UI.WebControls.GridView gridView)
       {
            // using the gridView object you can perform your desired action

       }

   }

in the Grid Page,

Task objTask = new Task();
           objTask.DoSomeAction(gvListMemo);

Hello,

As Karthik sir said, you can pass that control to the method in another class.Like this :

public Class c1()
  {
   public void method(control c)
   {
       ////perform action on your control
   }
 
  }

  Main:
  
  c1 c = new c1();
  c.method(any_control); ///pass your control

 I can also do something like this : 


  public class c1()
   {
 
   control c;
      public c1(control c)
         {
         this.c = c;

         }


       public void method()
          { 
            ////use this.c to do anything you want, but you will have to type case it to the control you want. for example say to a textbox so
         
            TextBox t = (TextBox)this.c; /// try this out, sometimes throws runtime exception be vigilant while writing this sentence. You must understand the relation between base and derived classes.
            
          }

    }

  
  In the Main method :
  c1 c = new c1(any_control); 

Please note, the Control class is the base class of all controls(correct me if i am wrong).
So to make this algorithm generalized i can use the Control type to become the argument of a constructor or a method.

- I have used a constructor because it may happen that during class initialization you want to perform some operation with that control


Thanks,
-Rahul

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