CODE：

Question

如何从另一种方法获取变量“SafeFileNames”？在按钮1中我有OpenFileDialog，在按钮2中我想获取所有文件名。

我使用循环：

foreach (string fileName in openFileDialog1.SafeFileNames)

在公共部门类表格中我有：
public string[] fileName { get; private set; }

但它不起作用。我可以创建新的数组并填写第一种方法，但我正在寻找另一种更好的解决方案。

CODE：

我有这样的事情：

public partial class Form1 : Form
{
    public Form1()
    { 
        InitializeComponent();
    }
    public string[] fileName { get; private set; }
    int numberOfFiles { get; set; }

    public void button1_Click(object sender, EventArgs e)
    {
        OpenFileDialog openFileDialog1 = new OpenFileDialog();

        openFileDialog1.CheckFileExists = true;
        openFileDialog1.CheckPathExists = true;

        openFileDialog1.DefaultExt = "txt";
        openFileDialog1.Filter = "Text files (*.txt)|*.txt";
        openFileDialog1.FilterIndex = 2;

        openFileDialog1.RestoreDirectory = true;
        openFileDialog1.ReadOnlyChecked = true;
        openFileDialog1.ShowReadOnly = false;
        openFileDialog1.Multiselect = true;
        textBox1.Text = "";
        if (openFileDialog1.ShowDialog() == DialogResult.OK)
        {
            int number = 0;
            foreach (string fileName in openFileDialog1.SafeFileNames)
            {
            }
        }
        }
    public void button2_Click(object sender, EventArgs e)
    {
    HERE - I want to know string from openFileDialog1.SafeFileNames
    }

现在string[] fileName为空。

Answer 1

如果从第一个方法调用第二个方法，则可以将字符串数组传递给第二个方法。否则，您可以使用类中的私有字段来引用数组并在第二种方法中使用。

修改：您可以按如下方式修改代码：

public Form1()
{ 
    InitializeComponent();
}
public string[] fileNames { get; private set; }
int numberOfFiles { get; set; }

public void button1_Click(object sender, EventArgs e)
{
    //Your openFileDialog1 initialisation and other stuff here
    if (openFileDialog1.ShowDialog() == DialogResult.OK)
    {
        fileNames = openFileDialog1.SafeFileNames;
        numberOfFiles = fileName.Length;
    }
}
public void button2_Click(object sender, EventArgs e)
{
    foreach (string fileName in fileNames)
    {
        //You can access the name of each file using fileName now
    }
}

我认为你对foreach循环中的迭代变量有一些困惑。该变量仅存在于循环内部，并在每次迭代时为其分配一个新值。

如何从另一种方法获取变量“SafeFileNames”？

CODE：

1 个答案: