当我已经定义了变量时,为什么我会收到一个错误,表明我的变量不存在？

Question

我收到一个错误,表明MyRandomArray当前上下文中不存在.如何在C#WinForms应用程序中跨类访问变量？

public void Quiz_Load(object sender, EventArgs e)
{
    string[] MyRandomArray = getWordList();
}

private void timer1_Tick(object sender, EventArgs e)
{
    somefunction(MyRandomArray);/// MyRandomArray doesn't exist in the current context.
}

Answer 1

您已经定义了数组,但仅在Quiz_Load方法的范围内,因此范围timer1_Tick不了解它.如果将其声明为类的实例成员,则可以从任何实例方法访问它:

private string[] MyRandomArray;

public void Quiz_Load(object sender, EventArgs e)
{
    this.MyRandomArray = getWordList();
}

private void timer1_Tick(object sender, EventArgs e)
{
   somefunction(this.MyRandomArray); // No problem
}

进一步阅读

• 范围(C#)