C#文件夹浏览器对话框问题

Question

我有一个按钮，单击后使用 stremReader 读取文本文件，并使用文件夹浏览器对话框保存文件。保存文件并再次单击按钮后，我收到一条错误消息，提示找不到文本文件，它会尝试从上一个文档的保存路径读取文本文件。

有什么办法可以解决这个问题吗？

部分代码如下:

private void Invoice_Load(object sender, EventArgs e)
{
    try
    {
        StreamReader sr = new StreamReader(@"../../DatabasePath");
        dataBase = sr.ReadLine();

        if (dataBase == null)
        {
            MessageBox.Show("Please use this to choose the location of the database.");
            Process.Start(@"..\..\DatabaseChooser.exe");
            ready = false;
        }

        if (!ready)
        {
            while (IsProcessOpen("DatabaseChooser"))
            {
                ready = false;
            }
            ready = true;

            if (ready)
            {
                doIfReady();
            }
        }

        else if (ready)
        {
            doIfReady();
        }
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}

private void btnCreateInvoice_Click(object sender, EventArgs e)
{
    int SelectColumnIndex = 5;

    foreach (DataGridViewRow row in dataGridViewInvoice.Rows)
    {
        if (row.Cells[SelectColumnIndex].Value != null &&
               Convert.ToBoolean(row.Cells[SelectColumnIndex].Value) == true)
        {
            foreach (DataGridViewCell cell in row.Cells)
            {
                if (cell.OwningColumn.Index != SelectColumnIndex)
                {
                    data += (cell.Value + "          "); // do some thing                              
                }
            }
            data += System.Environment.NewLine;
            total += (int)row.Cells["TotPrice"].Value;
        }
    }

    MessageBox.Show("Please choose your invoice template", "Template");
    OpenFileDialog op = new OpenFileDialog();
    op.ShowHelp = true;
    op.Filter = "Microsoft Word Documents 97-2003 (*.doc)|*.doc|Microsoft Word 2007 (*.docx)|*.docx";
    if (op.ShowDialog() == DialogResult.Cancel)
    {
        this.Hide();
    }

    MessageBox.Show("Please choose where you want to save the invoice", "Save");
    FolderBrowserDialog fd = new FolderBrowserDialog();
    fd.Description = "Please choose";
    if (fd.ShowDialog() == DialogResult.Cancel)
    {
        this.Hide();
    }

    string path = fd.SelectedPath + "\\" + txtFileName.Text + ".doc";

    CreateWordDoc(op.FileName, path);
}

Answer 1

首先，您可能想发布一些代码。其次，你应该使用 SaveFileDialog保存文件而不是 FolderBrowser。