Question

我目前正在使用“列表框中的带有项目（文件名）的复制和粘贴”。没有错误，但复制和粘贴似乎无效。我是新手，所以我不知道这里出了什么问题，我们将不胜感激。

复制代码

 if(lvwExplorer.SelectedItems[0].Text != "" && lvwExplorer.SelectedItems.Count == 1)
        {
            Clipboard.SetText(lvwExplorer.SelectedItems[0].Text);
        }
        else
        {
            MessageBox.Show("You can only copy one element at a time.", "Cannot Copy", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }

粘贴代码

string path = Clipboard.GetText();
        char seperator = '\\';
        string originalFileName = path.Split(seperator)[path.Split(seperator).Length - 1];
        string target = cbxAddress.Text + "\\" + originalFileName;

        try
        {
            if(File.Exists(target))
            {
                if (MessageBox.Show("The File you want to copy already exists. Do you want to replace it?", "File exists", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.Yes)
                {
                    File.Delete(target);
                    File.Copy(path, target, false);
                    GoToDirectory();
                }
            }
        }
        catch(Exception ex)
        {
            MessageBox.Show("Error " + ex.Message);
        }
    }

Answer 1

在粘贴代码中，仅当目标文件存在时才执行粘贴操作！请更改您的代码：

            ... 
            if(File.Exists(target))
            {
                if (MessageBox.Show("The File you want to copy already exists. Do you want to replace it?", "File exists", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.Yes)
                {
                    File.Delete(target);
                    File.Copy(path, target, false);
                    GoToDirectory();
                }
            }
            else
            {
                File.Copy(path, target, false);
                GoToDirectory();
            }
            ...

C＃文件复制和粘贴

1 个答案: