在 C# 中更改名称和移动文件

Question

private void btn_add_image_Click(object sender, EventArgs e)
    {
        openFileDialog1.Title = "Choose a file";
        openFileDialog1.InitialDirectory = "C:\";
        openFileDialog1.Filter = "  JPEG Files (*.jpg;*.jpeg;*.jpe;*.jfif)|*.jpg|All Files (*.*)|*.*";
        openFileDialog1.ShowDialog();
        string file_name = openFileDialog1.FileName;
        string filename2 = openFileDialog1.SafeFileName;
        pictureBox1.Image = Image.FromFile(file_name);
    }


    private void button1_Click(object sender, EventArgs e)
    {
        try
        {
            pictureBox1.Image.Dispose();
            pictureBox1.Image = null;
            string[] extension = getExtension("images\" + userid);
            if (File.Exists("images\" + userid + extension[0]))
            {   
                File.Delete("resimler\" + userid + extension[0]);
            }

        }
        catch (Exception)
        {
            MessageBox.Show("İmage cannot find");
        }

我想更改文件名并保存，所以我在文件存在的情况下编写了这段代码，而不是删除文件并使用用户 ID 名称保存选择的文件，但我无法更改名称并保存文件

Answer 1

if (File.Exists(@"\path\to\source"))
{
    File.Move(@"\path\to\source",@"\path\to\destination")
}

Answer 2

我想我可以用这段代码解决你的两个问题。

System.IO.File.Move("old_file_name_path", "new_file_name_path");

这会将文件移动到新文件名。看这里：File.Move

但是，我真的不明白你在这里问什么：

i wrote this code if file exists , than delete file and save the choosen with userid name but i cant do change name and save file

你能说得具体点吗？

Answer 3

谢谢大家

private void btn_save_Click(object sender, EventArgs e)
    {
        pictureBox1.Image.Dispose();
        pictureBox1.Image = null;
        string source = openFileDialog1.FileName;
        string[] extension = getExtension(source);
        string destination = "images\" + userid + extension[0];
        System.IO.File.Move(source, destination);
        pictureBox1.Image = Image.FromFile("images\" + userid + extension[0]);

    }

在 C# 中更改名称和移动文件

Change name and move file in C#

c#

.net

openfiledialog

system.io.file