访问 C# 中的私有方法
大家好,我是 C# 世界的新手,我遇到了一个问题。我在程序的 Form_Load 方法中完成了一个数组,但我需要在 picture_box 方法中访问该数组,如下所示:
private void Form2_Load(object sender, EventArgs e)
{
//In this method we get a random array to set the images
int[] imgArray = new int[20];
Random aleatorio = new Random();
int num, contador = 0;
num = aleatorio.Next(1, 21);
imgArray[contador] = num;
contador++;
while (contador < 20)
{
num = aleatorio.Next(1, 21);
for (int i = 0; i <= contador; i++)
{
if (num == imgArray[i])
{
i = contador;
}
else
{
if (i + 1 == contador)
{
imgArray[contador] = num;
contador++;
i = contador;
}
}
}
}
}
private void pictureBox1_Click(object sender, EventArgs e)
{
pictureBox1.Image = Image.FromFile(@"C:\Users\UserName\Desktop\MyMemoryGame\" + imgArray[0] + ".jpg");
}
但我只收到错误: 错误 1 名称“imgArray”在当前上下文中不存在
Hi People I'm newbie in the C# world and I'm having a problem. I have done an array in the Form_Load method of my program, but I need to access the array in a picture_box method like this:
private void Form2_Load(object sender, EventArgs e)
{
//In this method we get a random array to set the images
int[] imgArray = new int[20];
Random aleatorio = new Random();
int num, contador = 0;
num = aleatorio.Next(1, 21);
imgArray[contador] = num;
contador++;
while (contador < 20)
{
num = aleatorio.Next(1, 21);
for (int i = 0; i <= contador; i++)
{
if (num == imgArray[i])
{
i = contador;
}
else
{
if (i + 1 == contador)
{
imgArray[contador] = num;
contador++;
i = contador;
}
}
}
}
}
private void pictureBox1_Click(object sender, EventArgs e)
{
pictureBox1.Image = Image.FromFile(@"C:\Users\UserName\Desktop\MyMemoryGame\" + imgArray[0] + ".jpg");
}
But I only get the error: Error 1 The name 'imgArray' does not exist in the current context
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您需要在类级别(Form2_Load 之外)而不是在类级别定义 int[] imgArray。否则该变量的“范围”仅限于该函数。您需要删除 Form2_Load 中的第一个“int[]”部分,以防止您只是声明一个新变量。
例如:
You need to define int[] imgArray at the class level (outside of Form2_Load) rather than inside it. Otherwise the "scope" of that variable is limited to that function. You will need to knock off the first "int[]" part in Form2_Load to prevent you from just declaring a new variable.
For example:
该错误的含义与它所说的完全一样。
您已在 Form2_Load 函数的范围中声明了该数组。在它之外,它不会存在。
要实现您想要实现的目标,请向表单本身添加一个私有数组。
希望这有帮助。
The error means exactly what it says.
You've declared the array in the scope of the Form2_Load function. Outside of it, it will not exist.
To do what you're trying to achieve, add a private array to the form itself.
Hopefully that helps.