问题描述
我有两个表（qf_schoolQuestion，qf_schoolOption）qf_schoolOption表，其外键为questionId，它是qf_schoolQuestion表中的主键。
TABLES:
qf_schoolQuestion | qf_schoolOption
----------------------------------
questionId | schoolOptionId
questionTitle | questionId
etc columns | firstChoice
| secondChoice
| thirdChoice
| fourthChoice
我想将Excel数据批量插入两个表中，但是问题是我的代码将在两个表中插入记录，但是当数据插入qf_schoolQuestion时，它将插入所有数据，但是当插入记录时在另一个表qf_schoolOption中，则发生了问题...
问题是，假设我们在excel工作表中有两个记录，那么f_schoolQuestion表中的数据插入显示了两个带有两个生成的主键的记录，但是当数据插入另一个表（即qf_schoolOption表）中时它将输入4条记录到sql server中，
假设qf_schoolQuestion表生成的ID为'2044'，'2045'，则qf_schoolOption表将插入从Excel工作表到'2044'Id的双向行和'2045'ID的双向记录。 / p>
HttpPost：
public JsonResult SchoolQuesImport(HttpPostedFileBase fileUpload)
{
List<string> data = new List<string>();
if (fileUpload != null)
{
if (fileUpload.ContentType == "application/vnd.ms-excel" || fileUpload.ContentType == "application/octet-stream" || fileUpload.ContentType == "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
{
string filename = fileUpload.FileName;
string targetpath = Server.MapPath("~/UploadContent/");
fileUpload.SaveAs(targetpath + filename);
string pathToExcelFile = targetpath + filename;
var connectionString = "";
if (filename.EndsWith(".xls"))
{
connectionString = string.Format("Provider=Microsoft.Jet.OLEDB.4.0; data source={0}; Extended Properties=Excel 8.0; HDR=YES",pathToExcelFile);
}
else if (filename.EndsWith(".xlsx"))
{
connectionString = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=\"Excel 12.0 Xml;HDR=YES;IMEX=1\";",pathToExcelFile);
}
//"Xml;HDR=YES;IMEX=1\";
var adapter = new OleDbDataAdapter("SELECT * FROM [Sheet1$]",connectionString);
var ds = new DataSet();
adapter.Fill(ds,"ExcelTable");
DataTable dtable = ds.Tables["ExcelTable"];
string sheetName = "Sheet1";
var excelFile = new ExcelQueryFactory(pathToExcelFile);
var artistAlbums = from a in excelFile.Worksheet<qf_schoolQuestion>(sheetName) select a;
var parentartistalbum = from b in excelFile.Worksheet<qf_schoolOption>(sheetName) select b;
foreach (var a in artistAlbums)
{
try
{
if (a.questionTitle != "" && a.questionLevel != "" && a.questionLang != "")
{
qf_schoolQuestion sq = new qf_schoolQuestion();
#region School Question
//sq.questionId = a.questionId;
sq.examTypeId = a.examTypeId;
sq.examCategoryId = a.examCategoryId;
sq.examSubCategoryId = a.examSubCategoryId;
sq.examSubjectId = a.examSubjectId;
sq.questionLang = a.questionLang;
sq.questionLevel = a.questionLevel;
sq.questionRefBook = a.questionRefBook;
sq.questionTitle = a.questionTitle;
sq.questionYear = a.questionYear;
sq.createdDate = DateTime.Now;
sq.createdBy = User.Identity.Name;
#endregion
context.qf_schoolQuestion.Add(sq);
context.SaveChanges();
foreach (var b in parentartistalbum)
{
try
{
if (b.firstChoice != "")
{
qf_schoolOption so = new qf_schoolOption();
#region School Options
so.questionId = sq.questionId;
so.firstChoice = b.firstChoice;
so.secondChoice = b.secondChoice;
so.thirdChoice = b.thirdChoice;
so.fourthChoice = b.fourthChoice;
#endregion
context.qf_schoolOption.Add(so);
context.SaveChanges();
}
else
{
data.Add("<ul>");
if (b.firstChoice == "" || b.secondChoice == null) data.Add("<li>Choices are required.</li>");
data.Add("</ul>");
data.ToArray();
return Json(data,JsonRequestBehavior.AllowGet);
}
}
catch (DbEntityValidationException ex)
{
foreach (var entityValidationErrors in ex.EntityValidationErrors)
{
foreach (var validationError in entityValidationErrors.ValidationErrors)
{
Response.Write("Property: " + validationError.PropertyName + " Error: " + validationError.ErrorMessage);
}
}
}
}
}
else
{
data.Add("<ul>");
if (a.questionLang == "" || a.questionLang == null) data.Add("<li>Question Language is required.</li>");
data.Add("</ul>");
data.ToArray();
return Json(data,JsonRequestBehavior.AllowGet);
}
}
catch (DbEntityValidationException ex)
{
foreach (var entityValidationErrors in ex.EntityValidationErrors)
{
foreach (var validationError in entityValidationErrors.ValidationErrors)
{
Response.Write("Property: " + validationError.PropertyName + " Error: " + validationError.ErrorMessage);
}
}
}
}
//deleting excel file from folder
if ((System.IO.File.Exists(pathToExcelFile)))
{
System.IO.File.Delete(pathToExcelFile);
}
return Json("success",JsonRequestBehavior.AllowGet);
}
else
{
//alert message for invalid file format
data.Add("Only Excel file format is allowed");
data.ToArray();
return Json(data,JsonRequestBehavior.AllowGet);
}
}
else
{
if (fileUpload == null) data.Add("Please choose Excel file");
data.ToArray();
return Json(data,JsonRequestBehavior.AllowGet);
}
}
解决方法
老实说，问题的描述不是很清楚，但是我将尝试提出一种解决方案：在我看来，您首先必须在表qf_schoolQuestion中插入所有记录，然后在表{{ 1}};这样，您应该避免记录重复。