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话不多说，请看代码：
public FileResult GetExcelFile()
{
if (Session["beginDate"] != null)
{
string bdate = Session["beginDate"].ToString();
DateTime ld = Convert.ToDateTime(Session["lastDate"].ToString());
DateTime ldate = ld.AddDays(1);
string lldate = ldate.ToString("yyyy-MM-dd");
int ptkey = Convert.ToInt32(Session["Process_PTR"]);
string proceSql = "select * from Assay_Process where RKEY="+ptkey;
DataTable proceDt = SqlHelper.QueryTable(proceSql);
IDataParameter[] iDataTitle = new SqlParameter[3];
iDataTitle[0] = new SqlParameter("@BeginDate", bdate);
iDataTitle[1] = new SqlParameter("@LastDate", lldate);
iDataTitle[2] = new SqlParameter("@RKEY", ptkey);
DataSet dtTitle = SqlHelper.RunProceduresByParameter("pro_GetAssalyInfoByExportPrint", iDataTitle);
DataTable dt = dtTitle.Tables[0];
string outStr = ExcelExport.outExcel(dt);
byte[] fileContents = Encoding.UTF8.GetBytes(outStr.ToString());
return File(fileContents, "application/ms-excel", "" + proceDt.Rows[0]["ProcessName"].ToString().Trim() + "化验单据(" + bdate.Trim() + "-" + lldate.Trim() + ").xls");
}
else
{
string qua_no = Session["quano"].ToString();
IDataParameter[] iDataTitle = new SqlParameter[1];
iDataTitle[0] = new SqlParameter("@Qua_no", qua_no);
DataSet dtTitle = SqlHelper.RunProceduresByParameter("pro_GetAssalyInfoByQua_No", iDataTitle);
DataTable dt = dtTitle.Tables[0];
string outStr = ExcelExport.outExcel(dt);
byte[] fileContents = Encoding.UTF8.GetBytes(outStr.ToString());
return File(fileContents, "application/ms-excel", "化验单据(" + qua_no.Trim()+ ").xls");
}
}
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