C# 实体框架正在删除一个条目
我从两个页面中的网页获取信息: 第一页: -创建内容c1,并创建翻译c1.t1; -创建内容c2,并创建翻译c2.t1 第二页: -系统检测到c1已经存在,只是将c1.t2添加到适当的表中; -系统检测到c2已经存在,只将c2.t2添加到适当的表中 不知何故,在第二页上,系统对c1.t1与c1.t2的匹配度过高,数据库中只有第二个译文可用。当去bug时,我发现它在某个点删除了c1.t1,但我不知道为什么 这是我真正的东西:C# 实体框架正在删除一个条目,c#,entity-framework,asp.net-mvc-3,entity-framework-4.1,ef-code-first,C#,Entity Framework,Asp.net Mvc 3,Entity Framework 4.1,Ef Code First,我从两个页面中的网页获取信息: 第一页: -创建内容c1,并创建翻译c1.t1; -创建内容c2,并创建翻译c2.t1 第二页: -系统检测到c1已经存在,只是将c1.t2添加到适当的表中; -系统检测到c2已经存在,只将c2.t2添加到适当的表中 不知何故,在第二页上,系统对c1.t1与c1.t2的匹配度过高,数据库中只有第二个译文可用。当去bug时,我发现它在某个点删除了c1.t1,但我不知道为什么 这是我真正的东西: 环境足迹4.1 代码优先 DbContext 我有这个POCO实体(
- 环境足迹4.1
- 代码优先
- DbContext
public class XBLRegionalContent
{
[Key, Column(Order = 0)]
public string ContentId { get; set; }
[ForeignKey("ContentId")]
public virtual XBLContent Content { get; set; }
[Key, Column(Order = 1)]
public string RegionId { get; set; }
[ForeignKey("RegionId")]
public virtual XBLRegion Region { get; set; }
public string Name { get; set; }
}
内容:-每个GUID的唯一内容:
public class XBLContent
{
#region [ Properties ]
/// <summary>
/// The GUID
/// </summary>
[Key]
[StringLength(36, ErrorMessage="Must have 36 characters")]
[Required(ErrorMessage="Must have a unique GUID")]
public string GUID { get; set; }
public string Type { get; set; }
public virtual ICollection<XBLRegionalContent> RegionalInfo { get; set; }
}
DbContext类没有什么不同,只有dbset
一个内容有很多翻译。一个翻译与一个内容相关。翻译主键是内容guid和区域id的组合
我在模型中有一个类,它填充数据库并创建视图用于显示信息的本地列表。这样,我只需要访问数据库一次就可以保存,并且在保存时不需要检索信息
以下仅是有关该课程的重要信息:
public class XBLChart : IDisposable
{
XBLContentContext db = new XBLContentContext();
private string baseurl = "http://foo.bar/";
public string Locale { get; private set; }
public string HTML { get; private set; }
public string URL { get; set; }
public ContentType Type { get; private set; }
public List<XBLContent> Contents { get; set; }
public XBLChart(ContentType type, string sort, string locale)
{
Type = type;
if (sort == null)
sort = Enum.GetName(typeof(SortBy), SortBy.OfferStartDate);
if (locale != null && locale.Length == 5)
Locale = locale;
else
Locale = "en-US";
URL = baseurl + Locale + "/" + sort;
HTML = FeedUtils.RequestHTML(URL);
Contents = new List<XBLContent>();
PopulateList();
}
private void PopulateList()
{
MatchCollection itens = Regexes.ChartItems().Matches(HTML);
MatchCollection titulos = Regexes.ChartTitles().Matches(HTML);
int type = (int)Type;
int start = type * 12;
this.Title = HttpUtility.HtmlDecode(titulos[type].Groups["title"].Value);
if (titulos.Count < 8 && start > 1)
{
start = (type - 1) * 12;
type--;
}
XBLRegion region;
if (!db.XBLRegions.Any(x => x.ID == Locale))
{
region = new XBLRegion { ID = Locale };
db.XBLRegions.Add(region);
db.SaveChanges();
}
else
region = db.XBLRegions.SingleOrDefault(x => x.ID == Locale);
for (int i = start; i < (start + 2); i++)
{
string guid = itens[i].Groups["guid"].Value;
XBLContent c = new XBLContent(guid);
if (!db.XBLContents.Any(x => x.GUID == guid))
{
c.Type = Type.ToString();
c.PopularInfo(Locale);
db.XBLContents.Add(c);
}
else
c = db.XBLContents.Single(x => x.GUID == c.GUID);
XBLRegionalContent regionalcontent = new XBLRegionalContent(guid, Locale);
if (!db.XBLRegionalInfos.Any(x => x.ContentId == guid && x.RegionId == Locale))
{
if (c.HTML == null)
c.PopularInfo(Locale);
regionalcontent.Populate(c.HTML);
regionalcontent.Name = HttpUtility.HtmlDecode(itens[i].Groups["name"].Value);
db.XBLRegionalInfos.Add(regionalcontent);
}
else
regionalcontent = db.XBLRegionalInfos.Single(x => x.ContentId == guid && x.RegionId == Locale);
db.SaveChanges();
c.RegionalInfo.Clear();
regionalcontent.Region = region;
c.RegionalInfo.Add(regionalcontent);
Contents.Add(c);
}
}
}
公共类XBLChart:IDisposable
{
XBLContentContext db=新的XBLContentContext();
专用字符串baseurl=”http://foo.bar/";
公共字符串区域设置{get;private set;}
公共字符串HTML{get;private set;}
公共字符串URL{get;set;}
公共ContentType类型{get;private set;}
公共列表内容{get;set;}
公共XBLChart(内容类型、字符串排序、字符串区域设置)
{
类型=类型;
if(sort==null)
sort=Enum.GetName(typeof(SortBy),SortBy.OfferStartDate);
if(locale!=null&&locale.Length==5)
语言环境=语言环境;
其他的
Locale=“en-US”;
URL=baseurl+Locale+“/”+排序;
HTML=FeedUtils.RequestHTML(URL);
Contents=新列表();
大众主义者();
}
私有void PopulateList()
{
MatchCollection itens=Regexes.ChartItems().Matches(HTML);
MatchCollection titulos=Regexes.ChartTitles().Matches(HTML);
int类型=(int)类型;
int start=类型*12;
this.Title=HttpUtility.HtmlDecode(titulos[type].Groups[“Title”].Value);
如果(titulos.Count<8&&start>1)
{
开始=(类型-1)*12;
类型--;
}
XBLRegion区域;
if(!db.XBLRegions.Any(x=>x.ID==Locale))
{
region=新XBLRegion{ID=Locale};
db.XBLRegions.Add(区域);
db.SaveChanges();
}
其他的
region=db.XBLRegions.SingleOrDefault(x=>x.ID==Locale);
对于(int i=开始;i<(开始+2);i++)
{
字符串guid=itens[i]。组[“guid”]。值;
XBLContent c=新的XBLContent(guid);
如果(!db.XBLContents.Any(x=>x.GUID==GUID))
{
c、 Type=Type.ToString();
c、 人口信息(地区);
db.XBLContents.Add(c);
}
其他的
c=db.XBLContents.Single(x=>x.GUID==c.GUID);
XBLRegionalContent regionalcontent=新的XBLRegionalContent(guid、区域设置);
如果(!db.XBLRegionalInfos.Any(x=>x.ContentId==guid&&x.RegionId==Locale))
{
如果(c.HTML==null)
c、 人口信息(地区);
regionalcontent.Populate(c.HTML);
regionalcontent.Name=HttpUtility.HtmlDecode(itens[i].Groups[“Name”].Value);
db.XBLRegionalInfos.Add(regionalcontent);
}
其他的
regionalcontent=db.XBLRegionalInfos.Single(x=>x.ContentId==guid&&x.RegionId==Locale);
db.SaveChanges();
c、 RegionalInfo.Clear();
区域内容。区域=区域;
c、 RegionalInfo.Add(regionalcontent);
内容。添加(c);
}
}
}
之后缺少db.SaveChanges()
public class XBLChart : IDisposable
{
XBLContentContext db = new XBLContentContext();
private string baseurl = "http://foo.bar/";
public string Locale { get; private set; }
public string HTML { get; private set; }
public string URL { get; set; }
public ContentType Type { get; private set; }
public List<XBLContent> Contents { get; set; }
public XBLChart(ContentType type, string sort, string locale)
{
Type = type;
if (sort == null)
sort = Enum.GetName(typeof(SortBy), SortBy.OfferStartDate);
if (locale != null && locale.Length == 5)
Locale = locale;
else
Locale = "en-US";
URL = baseurl + Locale + "/" + sort;
HTML = FeedUtils.RequestHTML(URL);
Contents = new List<XBLContent>();
PopulateList();
}
private void PopulateList()
{
MatchCollection itens = Regexes.ChartItems().Matches(HTML);
MatchCollection titulos = Regexes.ChartTitles().Matches(HTML);
int type = (int)Type;
int start = type * 12;
this.Title = HttpUtility.HtmlDecode(titulos[type].Groups["title"].Value);
if (titulos.Count < 8 && start > 1)
{
start = (type - 1) * 12;
type--;
}
XBLRegion region;
if (!db.XBLRegions.Any(x => x.ID == Locale))
{
region = new XBLRegion { ID = Locale };
db.XBLRegions.Add(region);
db.SaveChanges();
}
else
region = db.XBLRegions.SingleOrDefault(x => x.ID == Locale);
for (int i = start; i < (start + 2); i++)
{
string guid = itens[i].Groups["guid"].Value;
XBLContent c = new XBLContent(guid);
if (!db.XBLContents.Any(x => x.GUID == guid))
{
c.Type = Type.ToString();
c.PopularInfo(Locale);
db.XBLContents.Add(c);
}
else
c = db.XBLContents.Single(x => x.GUID == c.GUID);
XBLRegionalContent regionalcontent = new XBLRegionalContent(guid, Locale);
if (!db.XBLRegionalInfos.Any(x => x.ContentId == guid && x.RegionId == Locale))
{
if (c.HTML == null)
c.PopularInfo(Locale);
regionalcontent.Populate(c.HTML);
regionalcontent.Name = HttpUtility.HtmlDecode(itens[i].Groups["name"].Value);
db.XBLRegionalInfos.Add(regionalcontent);
}
else
regionalcontent = db.XBLRegionalInfos.Single(x => x.ContentId == guid && x.RegionId == Locale);
db.SaveChanges();
c.RegionalInfo.Clear();
regionalcontent.Region = region;
c.RegionalInfo.Add(regionalcontent);
Contents.Add(c);
}
}
}
db.SaveChanges();
c.RegionalInfo.Clear();
regionalcontent.Region = region;
c.RegionalInfo.Add(regionalcontent);