c# - Visual Studio : Given Path Not Supported Error

Question

我正在开发一个程序，该程序将读取 .lsp 文件，阅读它，部分理解并评论它，然后将编辑后的版本写回到同一目录，并附上 .txt 附件。我遇到的问题是当我尝试运行该程序时，visual studio 抛出“不支持给定路径”错误，这可能是由于我的一些疏忽。谁能发现我的代码中会导致文件路径无效的部分？

Stream myStream = null;
OpenFileDialog openFileDialog1 = new OpenFileDialog();

openFileDialog1.InitialDirectory = @"C:\Users\Administrator\Documents\All Code\clearspan-autocad-tools-development\Code\Lisp";
openFileDialog1.Filter = "LISP files (*.lsp)|*.lsp|All files (*.*)|*.*";
openFileDialog1.FilterIndex = 2;
openFileDialog1.RestoreDirectory = true;
string loc;

if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
    try
    {
        if ((myStream = openFileDialog1.OpenFile()) != null)
        {
            using (myStream)
            {
                string[] lines = File.ReadAllLines(openFileDialog1.FileName);
                // saves the document with the same name of the LISP file, but with a .txt file extension
                using (StreamWriter sr = new StreamWriter(openFileDialog1.InitialDirectory + "\\" + openFileDialog1.FileName.Substring(0, openFileDialog1.FileName.Length - 4) + ".txt"))
                {
                    foreach (string line in lines)
                    {
                        sr.WriteLine(line);
                    }
                }
            }
        }
    }
    catch (Exception ex)
    {
        MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message);
    }
}

编辑:文件路径变量为“C:\Users\Administrator\Documents\All Code\clearspan-autocad-tools-development\Code\Lisp\heel.lsp”

另外，错误发生在我尝试初始化 StreamWriter 并将文件路径调整为 .txt 文件的行。

Answer 1

openFileDialog.FileName 已经包含路径，因此将它与 openFileDialog.InitialDirectory 结合使用，使其成为类似于 C:\...\C:\... 这是无效的。

所以，只需使用

var txtFile= Path.ChangeExtension(openFileDialog1.FileName, ".txt");