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c # - how to add \ mark in file path

Select the folder to save and display the path in the textbox.
I want to check the textbox path and save the file.
However, when a folder is selected, it cannot be saved without a \ mark at the end.
How can I put a backslash at the end of the path?
Thank you.

private void button1_Click (object sender, EventArgs e)
        {
            string path = textBox1.Text;
</// Omitted since other operations from here
        }
        private void button2_Click (object sender, EventArgs e)
        {
            FolderBrowserDialog fbd = new FolderBrowserDialog ();
            if (fbd.ShowDialog () == DialogResult.OK)
            {
                textBox1.Text = fbd.SelectedPath;
            }
        }

What I did
string path = textBox1.Text + "\";
It was useless.

c# .netframework
  • Answer # 1 

    // string path = textBox1.Text + "\";
↓
string path = textBox1.Text + "\\";

    It is best to useSystem.IO.Path.Combine ()instead of string concatenation when creating the full path of the saved file.

  • Answer # 2

    string path = textBox1.Text + @ "\";

  • Answer # 3

    \ is an escape character, so if you want to use this character in an ordinary string, you must double it with "\\"
    If you go around with "C # escape character", you will get explanations about that.

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