C# 记录不是'；t保存到下载的CSV

我正在使用（呃，无论如何尝试）CsvHelper将记录写入CSV文件，然后下载该文件。现在，该文件将下载，但它只将“CsvHelper.CsvWriter”写入第一行的第一列。就这样。我错过了什么

启动下载的按钮处理程序：

protected void DownloadChargeDataAsCSV(object sender, EventArgs e)
{
    List<ChargeDetail> charges = ChargeDetail.GetDetailsForPatient(lblPatientNum.Text, lblPatientName.Text);

    string attachment = "attachment; filename=MyCsvLol.csv";
    HttpContext.Current.Response.Clear();
    HttpContext.Current.Response.ClearHeaders();
    HttpContext.Current.Response.ClearContent();
    HttpContext.Current.Response.AddHeader("content-disposition", attachment);
    HttpContext.Current.Response.ContentType = "text/csv";
    HttpContext.Current.Response.AddHeader("Pragma", "public");

    using (var textWriter = File.CreateText("MyCsvLol.csv"))
    using (var writer = new CsvWriter(textWriter))
    {
        foreach (var charge in charges)
        {
            writer.WriteRecord(charge);
        }

        HttpContext.Current.Response.Write(writer);
        HttpContext.Current.Response.End();
    }
}

public class ChargeDetail
{
    public string PatientNumber { get; set; }
    public string PateintName { get; set; }
    public string Date { get; set; }
    public string ChargeCode { get; set; }
    public string Description { get; set; }
    public string Qty { get; set; }
    public string UnitPrice { get; set; }
    public string ExtAmt { get; set; }

    public static List<ChargeDetail> GetDetailsForPatient(string patientNumber, string patientName)
    {
        List<ChargeDetail> charges = new List<ChargeDetail>();
        DataTable thisDT = new DataTable();
        using (SqlConnection thisConnection = new SqlConnection(ConfigurationManager.ConnectionStrings["DBConnectionString"].ConnectionString))
        {
            string SprocName = "GetChargeDetails";
            SqlDataAdapter thisAdapter = new SqlDataAdapter(SprocName, thisConnection);
            thisAdapter.SelectCommand.CommandType = CommandType.StoredProcedure;
            thisAdapter.SelectCommand.Parameters.AddWithValue("@PatientNumber", patientNumber);
            thisAdapter.Fill(thisDT);
        }

        foreach (DataRow row in thisDT.Rows)
        {
            charges.Add(new ChargeDetail(patientNumber, patientName, row));
        }

        return charges;
    }

    public ChargeDetail(string patientNumber, string patientName, DataRow row)
    {
        this.PatientNumber = patientNumber;
        this.PateintName = patientName;
        this.Date = row["SrvcDate"].ToString();
        this.ChargeCode = row["ChargeCode"].ToString();
        this.Description = row["ChargeDescription"].ToString();
        this.Qty = row["HHY_Qty"].ToString();
        this.UnitPrice = row["PatPrice"].ToString();
        this.ExtAmt = row["ExtAmt"].ToString();
    }

    public ChargeDetail()
    {
    }
}

protectedvoid下载ChargeDataAscsv（对象发送方，事件参数e）
{
列表费用=ChargeDetail.GetDetailsForPatient（lblPatientNum.Text，lblPatientName.Text）；
字符串attachment=“attachment；filename=MyCsvLol.csv”；
HttpContext.Current.Response.Clear（）；
HttpContext.Current.Response.ClearHeaders（）；
HttpContext.Current.Response.ClearContent（）；
HttpContext.Current.Response.AddHeader（“内容处置”，附件）；
HttpContext.Current.Response.ContentType=“text/csv”；
HttpContext.Current.Response.AddHeader（“Pragma”、“public”）；
使用（var textWriter=File.CreateText（“MyCsvLol.csv”））
使用（var writer=new CsvWriter（textWriter））
{
foreach（费用中的var费用）
{
编剧、编剧记录（费用）；
}
HttpContext.Current.Response.Write（writer）；
HttpContext.Current.Response.End（）；
}
}

费用明细类别：

protected void DownloadChargeDataAsCSV(object sender, EventArgs e)
{
    List<ChargeDetail> charges = ChargeDetail.GetDetailsForPatient(lblPatientNum.Text, lblPatientName.Text);

    string attachment = "attachment; filename=MyCsvLol.csv";
    HttpContext.Current.Response.Clear();
    HttpContext.Current.Response.ClearHeaders();
    HttpContext.Current.Response.ClearContent();
    HttpContext.Current.Response.AddHeader("content-disposition", attachment);
    HttpContext.Current.Response.ContentType = "text/csv";
    HttpContext.Current.Response.AddHeader("Pragma", "public");

    using (var textWriter = File.CreateText("MyCsvLol.csv"))
    using (var writer = new CsvWriter(textWriter))
    {
        foreach (var charge in charges)
        {
            writer.WriteRecord(charge);
        }

        HttpContext.Current.Response.Write(writer);
        HttpContext.Current.Response.End();
    }
}

public class ChargeDetail
{
    public string PatientNumber { get; set; }
    public string PateintName { get; set; }
    public string Date { get; set; }
    public string ChargeCode { get; set; }
    public string Description { get; set; }
    public string Qty { get; set; }
    public string UnitPrice { get; set; }
    public string ExtAmt { get; set; }

    public static List<ChargeDetail> GetDetailsForPatient(string patientNumber, string patientName)
    {
        List<ChargeDetail> charges = new List<ChargeDetail>();
        DataTable thisDT = new DataTable();
        using (SqlConnection thisConnection = new SqlConnection(ConfigurationManager.ConnectionStrings["DBConnectionString"].ConnectionString))
        {
            string SprocName = "GetChargeDetails";
            SqlDataAdapter thisAdapter = new SqlDataAdapter(SprocName, thisConnection);
            thisAdapter.SelectCommand.CommandType = CommandType.StoredProcedure;
            thisAdapter.SelectCommand.Parameters.AddWithValue("@PatientNumber", patientNumber);
            thisAdapter.Fill(thisDT);
        }

        foreach (DataRow row in thisDT.Rows)
        {
            charges.Add(new ChargeDetail(patientNumber, patientName, row));
        }

        return charges;
    }

    public ChargeDetail(string patientNumber, string patientName, DataRow row)
    {
        this.PatientNumber = patientNumber;
        this.PateintName = patientName;
        this.Date = row["SrvcDate"].ToString();
        this.ChargeCode = row["ChargeCode"].ToString();
        this.Description = row["ChargeDescription"].ToString();
        this.Qty = row["HHY_Qty"].ToString();
        this.UnitPrice = row["PatPrice"].ToString();
        this.ExtAmt = row["ExtAmt"].ToString();
    }

    public ChargeDetail()
    {
    }
}

公共类计费详细信息
{
公共字符串PatientNumber{get；set；}
公共字符串PateintName{get；set；}
公共字符串日期{get；set；}
公共字符串ChargeCode{get；set；}
公共字符串说明{get；set；}
公共字符串数量{get；set；}
公共字符串单价{get；set；}
公共字符串ExtAmt{get；set；}
公共静态列表GetDetailsForPatient（字符串patientNumber，字符串patientName）
{
列表费用=新列表（）；
DataTable thisDT=新DataTable（）；
正在使用（SqlConnection thisConnection=newsqlconnection（ConfigurationManager.ConnectionStrings[“DBConnectionString”].ConnectionString））
{
字符串SprocName=“GetChargeDetails”；
SqlDataAdapter thisAdapter=新的SqlDataAdapter（存储过程名称，thisConnection）；
thisAdapter.SelectCommand.CommandType=CommandType.StoredProcess；
thisAdapter.SelectCommand.Parameters.AddWithValue（“@PatientNumber”，PatientNumber）；
thisAdapter.Fill（thisDT）；
}
foreach（此dt.行中的数据行）
{
费用。添加（新的费用明细（患者编号、患者姓名、行））；
}
退货费用；
}
公用计费详细信息（字符串patientNumber、字符串patientName、数据行）
{
this.PatientNumber=PatientNumber；
this.PateintName=patientName；
this.Date=row[“SrvcDate”].ToString（）；
this.ChargeCode=行[“ChargeCode”].ToString（）；
this.Description=行[“ChargeDescription”].ToString（）；
此.Qty=行[“HHY_Qty”].ToString（）；
this.UnitPrice=row[“PatPrice”].ToString（）；
this.ExtAmt=行[“ExtAmt”].ToString（）；
}
公共收费详情（）
{
}
}

您无法阅读“编写器”。保存文件后，将其读回以发送回用户

using (var textWriter = File.CreateText("MyCsvLol.csv"))
    using (var writer = new CsvWriter(textWriter))
    {
        foreach (var charge in charges)
        {
            writer.WriteRecord(charge);
        }       
    }

 HttpContext.Current.Response.Write(File.ReadAllText("MyCsvLol.csv"));
 HttpContext.Current.Response.End();

你不能读“作家”。保存文件后，将其读回以发送回用户

using (var textWriter = File.CreateText("MyCsvLol.csv"))
    using (var writer = new CsvWriter(textWriter))
    {
        foreach (var charge in charges)
        {
            writer.WriteRecord(charge);
        }       
    }

 HttpContext.Current.Response.Write(File.ReadAllText("MyCsvLol.csv"));
 HttpContext.Current.Response.End();

你不能读“作家”。保存文件后，将其读回以发送回用户

using (var textWriter = File.CreateText("MyCsvLol.csv"))
    using (var writer = new CsvWriter(textWriter))
    {
        foreach (var charge in charges)
        {
            writer.WriteRecord(charge);
        }       
    }

 HttpContext.Current.Response.Write(File.ReadAllText("MyCsvLol.csv"));
 HttpContext.Current.Response.End();

你不能读“作家”。保存文件后，将其读回以发送回用户

using (var textWriter = File.CreateText("MyCsvLol.csv"))
    using (var writer = new CsvWriter(textWriter))
    {
        foreach (var charge in charges)
        {
            writer.WriteRecord(charge);
        }       
    }

 HttpContext.Current.Response.Write(File.ReadAllText("MyCsvLol.csv"));
 HttpContext.Current.Response.End();

这让它起作用了

protected void DownloadChargeDataAsCSV(object sender, EventArgs e)
{
    List<ChargeDetail> charges = ChargeDetail.GetDetailsForPatient(lblPatientNum.Text, lblPatientName.Text);

    string attachment = "attachment; filename=ChargeDetails.csv";
    HttpContext.Current.Response.Clear();
    HttpContext.Current.Response.ClearHeaders();
    HttpContext.Current.Response.ClearContent();
    HttpContext.Current.Response.AddHeader("content-disposition", attachment);
    HttpContext.Current.Response.ContentType = "text/csv";
    HttpContext.Current.Response.AddHeader("Pragma", "public");
    using (var memoryStream = new MemoryStream())
    using (var streamWriter = new StreamWriter(memoryStream))
    using (var streamReader = new StreamReader(memoryStream))
    using (var writer = new CsvWriter(streamWriter))
    {
        writer.WriteRecords(charges);
        memoryStream.Position = 0;
        HttpContext.Current.Response.Write(streamReader.ReadToEnd());
    }
    HttpContext.Current.Response.End();
}

protectedvoid下载ChargeDataAscsv（对象发送方，事件参数e）
{
列表费用=ChargeDetail.GetDetailsForPatient（lblPatientNum.Text，lblPatientName.Text）；
string attachment=“附件；文件名=ChargeDetails.csv”；
HttpContext.Current.Response.Clear（）；
HttpContext.Current.Response.ClearHeaders（）；
HttpContext.Current.Response.ClearContent（）；
HttpContext.Current.Response.AddHeader（“内容处置”，附件）；
HttpContext.Current.Response.ContentType=“text/csv”；
HttpContext.Current.Response.AddHeader（“Pragma”、“public”）；
使用（var memoryStream=new memoryStream（））
使用（var streamWriter=新streamWriter（memoryStream））
使用（var streamReader=新streamReader（memoryStream））
使用（var writer=new CsvWriter（streamWriter））
{
书面记录（费用）；
memoryStream.Position=0；
HttpContext.Current.Response.Write（streamReader.ReadToEnd（））；
}
HttpContext.Current.Response.End（）；
}

这让它工作起来了

protected void DownloadChargeDataAsCSV(object sender, EventArgs e)
{
    List<ChargeDetail> charges = ChargeDetail.GetDetailsForPatient(lblPatientNum.Text, lblPatientName.Text);

    string attachment = "attachment; filename=ChargeDetails.csv";
    HttpContext.Current.Response.Clear();
    HttpContext.Current.Response.ClearHeaders();
    HttpContext.Current.Response.ClearContent();
    HttpContext.Current.Response.AddHeader("content-disposition", attachment);
    HttpContext.Current.Response.ContentType = "text/csv";
    HttpContext.Current.Response.AddHeader("Pragma", "public");
    using (var memoryStream = new MemoryStream())
    using (var streamWriter = new StreamWriter(memoryStream))
    using (var streamReader = new StreamReader(memoryStream))
    using (var writer = new CsvWriter(streamWriter))
    {
        writer.WriteRecords(charges);
        memoryStream.Position = 0;
        HttpContext.Current.Response.Write(streamReader.ReadToEnd());
    }
    HttpContext.Current.Response.End();
}

protectedvoid下载ChargeDataAscsv（对象发送方，事件参数e）
{
列表费用=ChargeDetail.GetDetailsForPatient（lblPatientNum.Text，lblPatientName.Text）；
string attachment=“附件；文件名=ChargeDetails.csv”；
HttpContext.Current.Response.Clear（）；
HttpContext.Current.Response.ClearHeaders（）；
HttpContext.Current.Response.ClearContent（）；
HttpContext.Current.Response.AddHeader（“内容处置”，附件）；
HttpContext.Current.Response.ContentType=“text/csv”；
HttpContext.Current.Response.AddHeader（“Pragma”、“public”）；
使用（var memoryStream=new memoryStream（））
使用（var streamWriter=新streamWriter（memoryStream））
使用（var streamReader=新streamReader（memoryStream））
使用（var writer=new CsvWriter（streamWriter））
{
书面记录（费用）；
memoryStream.Position=0；
HttpContext.Current.Response.Write（streamReader.ReadToEnd（））；
}
HttpContext.Current.Response.End（）；
}

这让它工作起来了

protected void DownloadChargeDataAsCSV(object sender, EventArgs e)
{
    List<ChargeDetail> charges = ChargeDetail.GetDetailsForPatient(lblPatientNum.Text, lblPatientName.Text);

    string attachment = "attachment; filename=ChargeDetails.csv";
    HttpContext.Current.Response.Clear();
    HttpContext.Current.Response.ClearHeaders();
    HttpContext.Current.Response.ClearContent();
    HttpContext.Current.Response.AddHeader("content-disposition", attachment);
    HttpContext.Current.Response.ContentType = "text/csv";
    HttpContext.Current.Response.AddHeader("Pragma", "public");
    using (var memoryStream = new MemoryStream())
    using (var streamWriter = new StreamWriter(memoryStream))
    using (var streamReader = new StreamReader(memoryStream))
    using (var writer = new CsvWriter(streamWriter))
    {
        writer.WriteRecords(charges);
        memoryStream.Position = 0;
        HttpContext.Current.Response.Write(streamReader.ReadToEnd());
    }
    HttpContext.Current.Response.End();
}

protectedvoid下载ChargeDataAscsv（对象发送方，事件参数e）
{
列表费用=ChargeDetail.GetDetailsForPatient（lblPatientNum.Text，lblPatientName.Text）；
string attachment=“附件；文件名=ChargeDetails.csv”；
HttpContext.Current.Response.Clear（）；
HttpContext.Current.Response.ClearHeaders（）；
HttpContext.Current.Response.ClearContent（）；
HttpContext.Current