C# 使用aspx将数据从存储过程导出到txt文件
我想通过从aspx调用存储过程导出文件,并将数据保存到C# 使用aspx将数据从存储过程导出到txt文件,c#,asp.net,sql-server,stored-procedures,data-export,C#,Asp.net,Sql Server,Stored Procedures,Data Export,我想通过从aspx调用存储过程导出文件,并将数据保存到.txt文件中。每列必须具有需要设置的特定列长度。下面是我的代码,但当我运行程序时,输出只显示列名。。。没有数据显示。看起来程序没有读取row语句。请帮帮我 protected void Page_Load(object sender, EventArgs e) { Cursor.Current = Cursors.WaitCursor; string str = "Server=KABS;Database=HOT;uid=
.txt
文件中。每列必须具有需要设置的特定列长度。下面是我的代码,但当我运行程序时,输出只显示列名。。。没有数据显示。看起来程序没有读取row语句。请帮帮我
protected void Page_Load(object sender, EventArgs e)
{
Cursor.Current = Cursors.WaitCursor;
string str = "Server=KABS;Database=HOT;uid=sa;pwd=DDD;Connection Timeout=6000";
if (Request.QueryString["ProcessName"] != null)
{
using (SqlConnection con = new SqlConnection(str))
{
if (Request.QueryString["ProcessName"].ToString().Equals("Ebill"))
{
using (SqlCommand cmd = new SqlCommand("AR_Ebill_claim", con))
{
cmd.CommandType = CommandType.StoredProcedure;
string compcode = null;
DateTime dateFrom = DateTime.Now;
DateTime dateTo = DateTime.Now;
string episType = null;
string debtorCode = null;
if (Request.QueryString["compcode"] != null)
{
if (string.IsNullOrEmpty(Convert.ToString(Request.QueryString["compcode"])))
{
compcode = null;
}
else
{
compcode = Convert.ToString(Request.QueryString["compcode"]);
}
}
if (Request.QueryString["dateFrom"] != null)
{
DateTime dtFrom = DateTime.Parse(Request.QueryString["dateFrom"]);
dtFrom.ToString("dd-MMM-yyyy");
if (dtFrom == null)
{
dateFrom = DateTime.Now;
}
else
{
dateFrom = dtFrom;
}
}
if (Request.QueryString["dateTo"] != null)
{
DateTime dtTo = DateTime.Parse(Request.QueryString["dateTo"]);
dtTo.ToString("dd-MMM-yyyy");
if (dtTo == null)
{
dateTo = DateTime.Now;
}
else
{
dateTo = dtTo;
}
}
if (Request.QueryString["episType"] != null)
{
if (string.IsNullOrEmpty(Convert.ToString(Request.QueryString["episType"])))
{
episType = null;
}
else
{
episType = Convert.ToString(Request.QueryString["episType"]);
}
}
if (Request.QueryString["debtorCode"] != null)
{
if (string.IsNullOrEmpty(Convert.ToString(Request.QueryString["debtorCode"])))
{
debtorCode = null;
}
else
{
debtorCode = Convert.ToString(Request.QueryString["debtorCode"]);
}
}
cmd.Parameters.Add("@compcode", SqlDbType.VarChar, 100);
cmd.Parameters["@compcode"].Value = compcode;
cmd.Parameters.Add("@dateFrom", SqlDbType.SmallDateTime);
cmd.Parameters["@dateFrom"].Value = dateFrom;
cmd.Parameters.Add("@dateTo", SqlDbType.SmallDateTime);
cmd.Parameters["@dateTo"].Value = dateTo;
cmd.Parameters.Add("@episType", SqlDbType.VarChar, 40);
cmd.Parameters["@episType"].Value = episType;
cmd.Parameters.Add("@debtorCode", SqlDbType.VarChar, 100);
cmd.Parameters["@debtorCode"].Value = debtorCode;
con.Open();
//cmd.ExecuteNonQuery();
//gdBill.EmptyDataText = "No Records Found";
//gdBill.DataSource = cmd.ExecuteReader();
//gdBill.DataBind();
SqlDataAdapter da = new SqlDataAdapter();
DataTable dt = new DataTable();
da.SelectCommand = cmd;
da.Fill(dt);
string txt = string.Empty;
if (dt.Columns.Count > 0)
{
foreach (DataColumn column in dt.Columns)
{
//Add the Header row for Text file.
txt += column.ColumnName + "\t\t";
}
}
//Add new line.
txt += "\r\n";
if (dt.Rows.Count > 0)
{
foreach (DataRow row in dt.Rows)
{
foreach (DataColumn column in dt.Columns)
{
//Add the Data rows.
txt += row[column.ColumnName].ToString() + "\t\t";
}
//Add new line.
txt += "\r\n";
}
}
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition", "attachment;filename=E-Billing.txt");
Response.Charset = "";
Response.ContentType = "application/text";
Response.Output.Write(txt);
Response.Flush();
Response.End();
Cursor.Current = Cursors.AppStarting;
}
}
//cmd.Dispose();
con.Close();
}
}
}
我测试了你的代码,它正常工作。问题是存储过程
AR\u Ebill\u claim
返回零行。但是没有错误,所以列名会被导出
我认为问题在于参数。首先检查这些,然后测试存储过程是否在SQL server studio或类似程序中提供了所需的结果。我测试了您的代码,并且它正常工作。问题是存储过程
AR\u Ebill\u claim
返回零行。但是没有错误,所以列名会被导出
我认为问题在于参数。首先检查这些,然后测试存储过程是否在SQL server studio或类似程序中提供了所需的结果。我已经获得了以下代码所示的解决方案:)
if(Request.QueryString[“ProcessName”].ToString().Equals(“Ebill”))
{
使用(SqlCommand cmd=newsqlcommand(“AR_Ebill_claim”,con))
{
cmd.CommandType=CommandType.storedProcess;
字符串compcode=null;
DateTime dateFrom=DateTime.Now;
DateTime dateTo=DateTime.Now;
字符串类型=null;
字符串debtorCode=null;
if(Request.QueryString[“compcode”!=null)
{
if(string.IsNullOrEmpty(Convert.ToString(Request.QueryString[“compcode”]))
{
compcode=null;
}
其他的
{
compcode=Convert.ToString(Request.QueryString[“compcode”]);
}
}
if(Request.QueryString[“dateFrom”!=null)
{
DateTime dtFrom=DateTime.Parse(Request.QueryString[“dateFrom”]);
dtFrom.ToString(“dd-MMM-yyyy”);
if(dtFrom==null)
{
dateFrom=DateTime.Now;
}
其他的
{
dateFrom=dtFrom;
}
}
if(Request.QueryString[“dateTo”!=null)
{
DateTime dtTo=DateTime.Parse(Request.QueryString[“dateTo”]);
dtTo.ToString(“dd-MMM-yyyy”);
if(dtTo==null)
{
dateTo=DateTime.Now;
}
其他的
{
dateTo=dtTo;
}
}
if(Request.QueryString[“episType”!=null)
{
if(string.IsNullOrEmpty(Convert.ToString(Request.QueryString[“episType”]))
{
episType=null;
}
其他的
{
episType=Convert.ToString(Request.QueryString[“episType”]);
}
}
if(Request.QueryString[“债务人代码”!=null)
{
if(string.IsNullOrEmpty(Convert.ToString(Request.QueryString[“debtorCode”]))
{
debtorCode=null;
}
其他的
{
debtorCode=Convert.ToString(Request.QueryString[“debtorCode”]);
}
}
cmd.Parameters.Add(“@compcode”,SqlDbType.VarChar,100);
cmd.Parameters[“@compcode”].Value=compcode;
cmd.Parameters.Add(“@dateFrom”,SqlDbType.SmallDateTime);
cmd.Parameters[“@dateFrom”].Value=dateFrom;
cmd.Parameters.Add(“@dateTo”,SqlDbType.SmallDateTime);
cmd.Parameters[“@dateTo”].Value=dateTo;
cmd.Parameters.Add(“@episType”,SqlDbType.VarChar,40);
cmd.Parameters[“@episType”].Value=episType;
cmd.Parameters.Add(“@debtorCode”,SqlDbType.VarChar,100);
cmd.Parameters[“@debtorCode”].Value=debtorCode;
con.Open();
//cmd.ExecuteNonQuery();
//gdBill.EmptyDataText=“未找到任何记录”;
//gdBill.DataSource=cmd.ExecuteReader();
//gdBill.DataBind();
字符串outputFilePath=Server.MapPath(“~/Documents/EClaim.txt”);
如果(File.Exists(“~/Documents/EClaim.txt”))
{
删除(“~/Documents/EClaim.txt”);
}
SqlDataAdapter da=新的SqlDataAdapter();
DataTable dt=新的DataTable();
da.SelectCommand=cmd;
da.填充(dt);
if (Request.QueryString["ProcessName"].ToString().Equals("Ebill"))
{
using (SqlCommand cmd = new SqlCommand("AR_Ebill_claim", con))
{
cmd.CommandType = CommandType.StoredProcedure;
string compcode = null;
DateTime dateFrom = DateTime.Now;
DateTime dateTo = DateTime.Now;
string episType = null;
string debtorCode = null;
if (Request.QueryString["compcode"] != null)
{
if (string.IsNullOrEmpty(Convert.ToString(Request.QueryString["compcode"])))
{
compcode = null;
}
else
{
compcode = Convert.ToString(Request.QueryString["compcode"]);
}
}
if (Request.QueryString["dateFrom"] != null)
{
DateTime dtFrom = DateTime.Parse(Request.QueryString["dateFrom"]);
dtFrom.ToString("dd-MMM-yyyy");
if (dtFrom == null)
{
dateFrom = DateTime.Now;
}
else
{
dateFrom = dtFrom;
}
}
if (Request.QueryString["dateTo"] != null)
{
DateTime dtTo = DateTime.Parse(Request.QueryString["dateTo"]);
dtTo.ToString("dd-MMM-yyyy");
if (dtTo == null)
{
dateTo = DateTime.Now;
}
else
{
dateTo = dtTo;
}
}
if (Request.QueryString["episType"] != null)
{
if (string.IsNullOrEmpty(Convert.ToString(Request.QueryString["episType"])))
{
episType = null;
}
else
{
episType = Convert.ToString(Request.QueryString["episType"]);
}
}
if (Request.QueryString["debtorCode"] != null)
{
if (string.IsNullOrEmpty(Convert.ToString(Request.QueryString["debtorCode"])))
{
debtorCode = null;
}
else
{
debtorCode = Convert.ToString(Request.QueryString["debtorCode"]);
}
}
cmd.Parameters.Add("@compcode", SqlDbType.VarChar, 100);
cmd.Parameters["@compcode"].Value = compcode;
cmd.Parameters.Add("@dateFrom", SqlDbType.SmallDateTime);
cmd.Parameters["@dateFrom"].Value = dateFrom;
cmd.Parameters.Add("@dateTo", SqlDbType.SmallDateTime);
cmd.Parameters["@dateTo"].Value = dateTo;
cmd.Parameters.Add("@episType", SqlDbType.VarChar, 40);
cmd.Parameters["@episType"].Value = episType;
cmd.Parameters.Add("@debtorCode", SqlDbType.VarChar, 100);
cmd.Parameters["@debtorCode"].Value = debtorCode;
con.Open();
//cmd.ExecuteNonQuery();
//gdBill.EmptyDataText = "No Records Found";
//gdBill.DataSource = cmd.ExecuteReader();
//gdBill.DataBind();
string outputFilePath = Server.MapPath("~/Documents/EClaim.txt");
if (File.Exists("~/Documents/EClaim.txt"))
{
File.Delete("~/Documents/EClaim.txt");
}
SqlDataAdapter da = new SqlDataAdapter();
DataTable dt = new DataTable();
da.SelectCommand = cmd;
da.Fill(dt);
int[] maxLengths = new int[dt.Columns.Count];
for (int i = 0; i < dt.Columns.Count; i++)
{
maxLengths[i] = dt.Columns[i].ColumnName.Length;
foreach (DataRow row in dt.Rows)
{
if (!row.IsNull(i))
{
int length = row[i].ToString().Length;
if (length > maxLengths[i])
{
maxLengths[i] = length;
}
}
}
}
using (StreamWriter sw = new StreamWriter(outputFilePath, false))
{
//for (int i = 0; i < dt.Columns.Count; i++)
//{
// sw.Write(dt.Columns[i].ColumnName.PadRight(maxLengths[i] + 2));
//}
sw.WriteLine();
foreach (DataRow row in dt.Rows)
{
for (int i = 0; i < dt.Columns.Count; i++)
{
if (!row.IsNull(i))
{
sw.Write(row[i].ToString().PadRight(maxLengths[i] + 1));
}
else
{
sw.Write(new string(' ', maxLengths[i] + 1));
}
}
sw.WriteLine();
}
sw.Close();
}
//string filePath = "~/Documents/EBilling.txt";
//Response.ContentType = "application/text";
//Response.AddHeader("Content-Disposition", "attachment;filename=\"" + filePath + "\"");
//Response.TransmitFile(Server.MapPath(filePath));
////Response.End();
}