Question

在加载.中有15.01.19.csv的文件时，出现以下错误：

System.Data.OleDb.OleDbException：“ 15.01.19.csv”不是有效名称。确保它不包含无效字符或标点符号，并且时间不要太长。'

在线：

adapter.Fill(dataTable);

代码：

private DataTable FillData(string connection, string query)
{
    DataTable dataTable = new DataTable();

    using (OleDbConnection con = new OleDbConnection(connection))
    {
        con.Open();
        OleDbDataAdapter adapter = new OleDbDataAdapter(query, con);
        adapter.Fill(dataTable);
        adapter.Dispose();
    };
    return dataTable;
}

要导入文件的代码为：

private DataTable GetData(string userFileName)
{
    string dirName = Path.GetDirectoryName(userFileName);
    string fileName = Path.GetFileName(userFileName);
    string fileExtension = Path.GetExtension(userFileName);
    string connection = string.Empty;
    string query = string.Empty;

    switch (fileExtension)
    {
        case ".csv":
            connection = $@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source={dirName};" +
                           "Extended Properties=\"text; HDR=Yes; IMEX=1; FMT=Delimited\"";
            query = $"SELECT * FROM {fileName}";
            break;
    }
    return FillData(connection, query);       
}

我尝试将正则表达式添加到字符串dirName = Path.GetDirectoryName(userFileName);中，但这没用。

Answer 1

我通过添加以下代码解决了这个问题：

string userFileName = Path.Combine(Path.GetDirectoryName(userFileNameUT), Path.GetFileNameWithoutExtension(userFileNameUT.Replace(".", "")) + ".csv");
File.Copy(userFileNameUT, userFileName, true);

在我的Browse按钮上，单击：

private void Browse_Click(object sender, EventArgs e)
{
    string userFileNameUT = string.Empty;
    using (OpenFileDialog ofd = new OpenFileDialog())
    {
        ofd.RestoreDirectory = true;
        ofd.Filter = "CSV Files|*.csv|Excel '97-2003|*.xls|Excel 2007-2019|*.xlsx";
        if (ofd.ShowDialog(this) == DialogResult.OK)
            userFileNameUT = ofd.FileName;
    }
    string userFileName = Path.Combine(Path.GetDirectoryName(userFileNameUT), Path.GetFileNameWithoutExtension(userFileNameUT.Replace(".", "")) + ".csv");
    File.Copy(userFileNameUT, userFileName, true);
    if (userFileNameUT.Length == 0) return;
    this.dataGridView1.DataSource = GetData(userFileName);
    fileTextBox.Text = userFileName;
}

C＃加载文件名中带有句号/句点的文件时出错

1 个答案: