Question

我尝试制作一个.exe文件，该文件可以从文本文件中读取全局参数，并将数据从数据库导出到csv文件

基本上我可以读取连接字符串并从文本文件中读取命令，但是我无法创建csv文件。

我的代码如下所示

static class CsvGenerator
{
public static string gb_Localconn = DBManager.GetParameter("ConnStr=");
public static string gb_Delimiter = DBManager.GetParameter("Delimiter=");
public static string gb_Quote = DBManager.GetParameter("Quote=");
public static string gb_QuoteType = DBManager.GetParameter("Quote_Type=");
public static string gb_CsvOutput = DBManager.GetParameter("Output_path=");
public static string gb_Prefix = DBManager.GetParameter("Output_Prefix=");
public static string gb_LogOutput = DBManager.GetParameter("Logfile_path=");
public static string gb_VesselList = DBManager.GetParameter("Vessel_list=");
private static DataTable dt;
private static int i;


public static void Main()
{
    StreamReader oRead = new StreamReader(AppDomain.CurrentDomain.BaseDirectory + "Query.cfg");

    string txtline = null;
    string QueryName = null;
    string query = null;
    while (oRead.Peek() != -1)

        try
        {
            txtline = oRead.ReadLine();
            if (txtline.IndexOf(":") != -1)
            {
                QueryName = txtline.Substring(0, txtline.IndexOf(":"));
                query = txtline.Substring(txtline.IndexOf(":") + 1, txtline.Length - QueryName.Length - 1);
                query = query.Replace("|Vessels|", gb_VesselList);
                MessageBox.Show(query);

                {

                    {
                        dt = DBManager.DBExecuteSelect(query, gb_Localconn);

                        DataColumn dcol = null;
                        if (dt.Rows.Count > 0)
                            MessageBox.Show(dcol.ToString());
                    }
                    DataRow drow = null;
                    for (i = 0; i <= dt.Rows.Count - 1; i++)
                        MessageBox.Show(drow.ToString());


                }
            }
        }
        catch (InvalidCastException e)
        {
            Console.WriteLine("{0} Exception caught.", e);
            {
            }




        }
}
}

有人可以帮我吗？

Answer 1

请参阅以下适用于我的代码：

var lines = new string[5][];

var csvFile = string.Join("\r\n", lines.Select(words =>
              string.Join(",", words.Select(word =>
                  "\"" + word.Replace("\"", "\"\"") + "\"")))));

File.WriteAllText("yourFileName.csv", csvFile);

有关c＃和csv导入和导出的其他详细信息，请访问以下链接：

http://www.codeproject.com/Articles/30705/C-CSV-Import-Export

希望这会对你有所帮助。

Answer 2

此链接可帮助您以CSV格式导出数据

http://www.aspsnippets.com/Articles/Export-GridView-To-WordExcelPDFCSV-in-ASP.Net.aspx

Answer 3

CSV Helper是一个很好的工具，可用于编写CSV文件。

我宁愿建议您使用Model类来创建文件。

希望它有所帮助，

将数据导出为CSV

3 个答案: