C# 在c中使局部变量值成为全局变量#

我有以下代码。在这段代码中，我可以通过使用eventHandling获得字符串值，如1、2、3等。如何获得值目前并不重要。我现在需要的是能够在页面加载事件之外访问此字符串值，如下面给出的函数

myfun（）

中。我如何实现这一点

protected void Page_Load(object sender, EventArgs e)
{

    hfm mymaster = (hfm)Page.Master;
    lcont lc = mymaster.getlcont();
    lc.myevent += delegate(string st)
     {
         //slbl.Text = st;

         string str =st;
      }
 }

   protectd void myfun()
   {
     //i want to access the string value "st" here.
   }

---

根据我的经验，您只需在函数范围之外声明您想要全局的变量

IE：不管/无论它们在哪里

string st; // St is declared outside of their scopes
protected void Page_Load(object sender, EventArgs e)
{}
   protectd void myfun()
   {
   }

---

根据我的经验，您只需在函数范围之外声明您想要全局的变量

IE：不管/无论它们在哪里

string st; // St is declared outside of their scopes
protected void Page_Load(object sender, EventArgs e)
{}
   protectd void myfun()
   {
   }

---

您可以将其公开：

公共-可以从任何地方联系到该成员。这是限制最少的可见性。默认情况下，枚举和接口是公共可见的

示例

<visibility> <data type> <name> = <value>;

---

您可以将其公开：

公共-可以从任何地方联系到该成员。这是限制最少的可见性。默认情况下，枚举和接口是公共可见的

示例

<visibility> <data type> <name> = <value>;

将全局（或类？）变量放在页面加载之前或类声明之后

public partial class Index : System.Web.UI.Page
{
   private string str = "";

   protected void Page_Load(object sender, EventArgs e)
   {

      hfm mymaster = (hfm)Page.Master;
      lcont lc = mymaster.getlcont();
      lc.myevent += delegate(string st)
      {
          //slbl.Text = st;

         str =st;
      }
   }

   protectd void myfun()
   {
     //i want to access the string value "st" here.

     //value of st has been passed to str already in page_load.
     string newString = str;
   }

}

将全局（或类？）变量放在页面加载之前或类声明之后

public partial class Index : System.Web.UI.Page
{
   private string str = "";

   protected void Page_Load(object sender, EventArgs e)
   {

      hfm mymaster = (hfm)Page.Master;
      lcont lc = mymaster.getlcont();
      lc.myevent += delegate(string st)
      {
          //slbl.Text = st;

         str =st;
      }
   }

   protectd void myfun()
   {
     //i want to access the string value "st" here.

     //value of st has been passed to str already in page_load.
     string newString = str;
   }

}

---

一个简单的改变就能使之成为可能。将str声明为全局变量

public class Form1
{
     string str = "";//Globel declaration of variable
    protected void Page_Load(object sender, EventArgs e)
    {
    }
}

---

一个简单的改变就能使之成为可能。将str声明为全局变量

public class Form1
{
     string str = "";//Globel declaration of variable
    protected void Page_Load(object sender, EventArgs e)
    {
    }
}

---

如我所见，您可以通过两种方式完成：

1） 作为参数传递：

protected void Page_Load(object sender, EventArgs e)
{

    hfm mymaster = (hfm)Page.Master;
    lcont lc = mymaster.getlcont();
    lc.myevent += delegate(string st)
     {
         //slbl.Text = st;

         string str =st;
         myfunc(str); // pass as param
      }
 }

 protectd void myfun(string str)  // see signature
 {
     //i want to access the string value "st" here.
 }

2） 创建一个类变量：

string classvariable;
protected void Page_Load(object sender, EventArgs e)
{

    hfm mymaster = (hfm)Page.Master;
    lcont lc = mymaster.getlcont();
    lc.myevent += delegate(string st)
     {
         //slbl.Text = st;

         string str =st;
         classvariable = str; // set it here
     }
}

protectd void myfun()
{
   //i want to access the string value "st" here. // get it here
}

---

如我所见，您可以通过两种方式完成：

1） 作为参数传递：

protected void Page_Load(object sender, EventArgs e)
{

    hfm mymaster = (hfm)Page.Master;
    lcont lc = mymaster.getlcont();
    lc.myevent += delegate(string st)
     {
         //slbl.Text = st;

         string str =st;
         myfunc(str); // pass as param
      }
 }

 protectd void myfun(string str)  // see signature
 {
     //i want to access the string value "st" here.
 }

2） 创建一个类变量：

string classvariable;
protected void Page_Load(object sender, EventArgs e)
{

    hfm mymaster = (hfm)Page.Master;
    lcont lc = mymaster.getlcont();
    lc.myevent += delegate(string st)
     {
         //slbl.Text = st;

         string str =st;
         classvariable = str; // set it here
     }
}

protectd void myfun()
{
   //i want to access the string value "st" here. // get it here
}

---

在类范围而不是委托范围中定义它，或将其作为参数传递给

myfun（）

在类范围而不是委托范围中定义它，或将其作为参数传递给

myfun（）