删除特定文件

Question

你能推荐一些代码吗，当我搜索邮政编码删除它时如何删除特定文件，如果我点击按钮将删除已经保存的文件。

private void button1_Click(object sender, EventArgs e)
{
    try
    {
        string EmployeeData = File.ReadAllText("Employee.txt");
        if (EmployeeData.Contains(textDelete.Text))
        {
            System.IO.File.Delete(EmployeeData);
        }
    }
    catch
    {
        MessageBox.Show("File or path not found or invalid.");
    }  
}

Answer 1

只需使用以下代码即可：

private void button1_Click(object sender, EventArgs e)
{
    try
    {
        string _path = "Employee.txt";
        string EmployeeData = File.ReadAllText(_path);
        if (EmployeeData.Contains(textDelete.Text))
        {
            System.IO.File.Delete(Path.GetFullPath(_path));
        }
    }
    catch
    {
        MessageBox.Show("File or path not found or invalid.");
    }  
}

Answer 2

尝试下面的内容.. here 是供您参考的文档。

private void button1_Click(object sender, EventArgs e)
{    
    try
    {
        string EmployeeData = File.ReadAllText("Employee.txt");
        if (EmployeeData.Contains(textDelete.Text))
        {
            System.IO.File.Delete(Path.GetFullPath("Employee.txt"));
        }
    }
    catch
    {
        MessageBox.Show("File or path not found or invalid.");
    }  
}

为了安全起见，您应该先检查文件是否存在..使用File.Exists方法确保文件存在，然后才对文件执行read/delete操作。你应该避免 known exceptions。使用下面的代码..

private void button1_Click(object sender, EventArgs e)
{
    try
    {
        if (System.IO.File.Exists(Path.GetFullPath(@"Employee.txt"))
        {
            string EmployeeData = File.ReadAllText("Employee.txt");
            if (EmployeeData.Contains(textDelete.Text))
            {
                System.IO.File.Delete(Path.GetFullPath("Employee.txt"));
            }
        }
    }
    catch
    {
        MessageBox.Show("File or path not found or invalid.");
    }  
}

删除特定文件

Delete specific file

c#

system.io.file