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我有一个数据集通过我的web服务执行存储过程后带入。如果数据集是空的,我需要返回一个通用结果而不是任何东西。在我的WebService(.ASMX)代码下面返回XML,如果它是EMPTY,就会被吐出.XML。不知道它是否有帮助,但是我在这里完全不知所措。理想情况下,我想看看Table1是否存在,然后做点什么......但是,我再次陷入困境。谢谢!如何将XML加载到数据集如果这是空的
public DataSet GetMaleDogsDS()
{
HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*");
//Define the dataset, in this case dsDogs
DataSet dsDogs = new DataSet();
//
dsDogs.Tables.Add("Dogs");
DbCommand dbCommand = null;
JavaScriptSerializer js = new JavaScriptSerializer();
try
{
Database db = DatabaseFactory.CreateDatabase();
string sqlCommand = "sp_GetDogs";
dbCommand = db.GetSqlStringCommand(sqlCommand);
dbCommand.CommandType = CommandType.StoredProcedure;
db.AddInParameter(dbCommand, "Gender", DbType.String, "male");
dsDogs = db.ExecuteDataSet(dbCommand);
string strXml = dsDogs.GetXml();
return dsDogs;
}
catch
{
string strXml = js.Serialize(dsDogs);
return dsDogs;
}
}
下面是空的结果XML:
<DataSet xmlns="http://0mitted.net/">
<xs:schema xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" id="NewDataSet">
<xs:element name="NewDataSet" msdata:IsDataSet="true" msdata:Locale="">
<xs:complexType>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="Table">
<xs:complexType>
<xs:sequence>
<xs:element name="DogID" type="xs:string" minOccurs="0"/>
<xs:element name="LongDesc" type="xs:string" minOccurs="0"/>
<xs:element name="ShortDesc" type="xs:string" minOccurs="0"/>
<xs:element name="ThumbURL" type="xs:string" minOccurs="0"/>
<xs:element name="LargeURL" type="xs:string" minOccurs="0"/>
<xs:element name="Gender" type="xs:string" minOccurs="0"/>
<xs:element name="Age" type="xs:string" minOccurs="0"/>
<xs:element name="Weight" type="xs:string" minOccurs="0"/>
<xs:element name="HealthStatus" type="xs:string" minOccurs="0"/>
<xs:element name="ActivityLevel" type="xs:string" minOccurs="0"/>
<xs:element name="PersonalityTraits" type="xs:string" minOccurs="0"/>
<xs:element name="InteractionDog" type="xs:string" minOccurs="0"/>
<xs:element name="InteractionCat" type="xs:string" minOccurs="0"/>
<xs:element name="ChildRequirement" type="xs:string" minOccurs="0"/>
<xs:element name="FenceRequirement" type="xs:string" minOccurs="0"/>
<xs:element name="WorkSchedule" type="xs:string" minOccurs="0"/>
<xs:element name="LeashManners" type="xs:string" minOccurs="0"/>
<xs:element name="TrainingNeeded" type="xs:string" minOccurs="0"/>
<xs:element name="AdoptionStatus" type="xs:string" minOccurs="0"/>
<xs:element name="AdoptionFee" type="xs:string" minOccurs="0"/>
<xs:element name="Name" type="xs:string" minOccurs="0"/>
<xs:element name="behavior" type="xs:string" minOccurs="0"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:choice>
</xs:complexType>
</xs:element>
</xs:schema>
<diffgr:diffgram xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" xmlns:diffgr="urn:schemas-microsoft-com:xml-diffgram-v1"/>
</DataSet>
天才!我会让你知道,如果这样做,因为这符合我的需求! – MrS1ck 2013-04-29 17:32:21
我应该在哪里坚持这一点?我试过了,在我的大脑中,这似乎是合乎逻辑的,在返回语句之后,但是缺少我的断点,表明它(读取“某事”)不起作用。 – MrS1ck 2013-04-29 17:38:22
嗯,我想你想检查你的执行语句后dsDog是否为空。所以把它放在这行之后:'dsDogs = db.ExecuteDataSet(dbCommand);' – MUG4N 2013-04-29 17:41:09