将变量从一个按钮单击传递到另一个

Question

这是一个简单的问题，但我似乎无法找到答案。我想要使​​用存储的值从一个按钮点击到另一个表单内的另一个按钮。任何援助将不胜感激。我尝试使用Calling code of Button from another one in C#中的一个示例，但无法使其正常工作。

public struct xmlData 
    { 
     public string xmlAttribute; 
    } 

private void Show_btn_Click(object sender, EventArgs e) 
    { 
      xmlData myXML = new xmlData(); 
       //do something..... 
      myXML.xmlAttributes = "blah" 
    } 

private void Submit_btn_Click(object sender, EventArgs e) 
    { 
//I want to call myXML.xmlAttributes retrieving the stored value from Show_btn_Click 
    } 

Answer 1

您应该在更高级别的范围内声明myXML变量。

xmlData myXML = new xmlData(); 

public struct xmlData 
{ 
    public string xmlAttribute; 
} 

private void Show_btn_Click(object sender, EventArgs e) 
{ 
      //do something..... 
     myXML.xmlAttributes = "blah" 
} 

private void Submit_btn_Click(object sender, EventArgs e) 
{ 
//I want to call myXML.xmlAttributes retrieving the stored value from Show_btn_Click 
} 

Answer 2

Instanciate构造函数中的xmlData，所以你可以在类中整体访问它。

public class XYZ 
{  
    xmlData myXML; 

    public XYZ() 
    { 
     myXML = new xmlData(); 
    } 

    private void Show_btn_Click(object sender, EventArgs e) 
    {    
     //do something..... 
     myXML.xmlAttributes = "blah" 
    } 

    private void Submit_btn_Click(object sender, EventArgs e) 
    { 
     // Here you can work myXML.xmlAttributes 
    }  
}