我想从列表框和文件夹中删除所选文件。目前它只从列表框中删除它。现在我希望它也从文件夹中删除。感谢
private void tDeletebtn_Click(object sender, EventArgs e)
{
if (listBox1.SelectedIndex != -1)
listBox1.Items.RemoveAt(listBox1.SelectedIndex);
}
private void TeacherForm_Load(object sender, EventArgs e)
{
DirectoryInfo dinfo = new DirectoryInfo(@"data\\Teachers\\");
FileInfo[] Files = dinfo.GetFiles("*.xml");
foreach (FileInfo file in Files)
{
listBox1.Items.Add(file.Name);
}
}
答案 0 :(得分:3)
如果您的listBox1.Items
包含您的文件路径,则可以通过取消引用filepath
然后使用File.Delete
删除它来简单地传递它:
private void tDeletebtn_Click(object sender, EventArgs e)
{
if (listBox1.SelectedIndex != -1){
string filepath = listBox1.Items[listBox1.SelectedIndex].ToString();
if(File.Exists(filepath))
File.Delete(filepath);
listBox1.Items.RemoveAt(listBox1.SelectedIndex);
}
}
也就是说,如果您使用listBox1
而不是使用FullName
将路径添加到Name
:
DirectoryInfo dinfo = new DirectoryInfo(@"data\\Teachers\\");
FileInfo[] Files = dinfo.GetFiles("*.xml");
foreach (FileInfo file in Files)
{
listBox1.Items.Add(file.FullName); //note FullName, not Name
}
如果您不想在listBox1
中添加全名,您也可以单独存储Folder
名称,因为它不会被更改:
string folderName; //empty initialization
.
.
DirectoryInfo dinfo = new DirectoryInfo(@"data\\Teachers\\");
FileInfo[] Files = dinfo.GetFiles("*.xml");
folderName = dinfo.FullName; //here you initialize your folder name
//Thanks to FᴀʀʜᴀɴAɴᴀᴍ
foreach (FileInfo file in Files)
{
listBox1.Items.Add(file.Name); //just add your filename here
}
然后你就这样使用它:
private void tDeletebtn_Click(object sender, EventArgs e)
{
if (listBox1.SelectedIndex != -1){
//Put your folder name here..
string filepath = Path.Combine(folderName, listBox1.Items[listBox1.SelectedIndex].ToString());
if(File.Exists(filepath))
File.Delete(filepath);
listBox1.Items.RemoveAt(listBox1.SelectedIndex);
}
}
答案 1 :(得分:1)
如果您具有访问该文件的适当权限,则应该可以正常运行:
System.IO.File.Delete(listBox1.SelectedItem.ToString());
仅当ListBoxItem
是字符串时,上述代码才适用。否则,您可以考虑将其强制转换为Data类并使用适当的属性。查看您发布的代码,不是必需的。
所以你的最终代码将是这样的:
private void tDeletebtn_Click(object sender, EventArgs e)
{
if (listBox1.SelectedIndex != -1)
{
System.IO.File.Delete(listBox1.Items[listBox1.SelectedIndex].ToString());
listBox1.Items.RemoveAt(listBox1.SelectedIndex);
}
}
请参阅:
请确保您在ListBox
中确实选择了某些内容!