如果你有而的dr.read的东西时,在数据库中的一个问题,你如何解决它?|如果你有一个错误(虽然dr.read),它表示对象引用设置到对象的实例,怎么你修复该错误,使用VB.NET(ASP.NET)。?
|特拉Xaba:OriginalGriff:检查您的Data_Access.CData.executespreturndr功能:很有可能是出于某种原因没有返回。这将导致"不设置到对象的实例"错误dr.Read()Public Function GetPass(ByVal _User_names As String) As List(Of CQuestion)
Dim objdal As New Data_Access.CData
Dim objpar As New List(Of Cparameter)
Dim objclas As New List(Of CQuestion)
Dim dr As IDataReader
objpar.Add(New Cparameter("@User_names", SqlDbType.VarChar, _User_names))
dr = objdal.executespreturndr("Get_Pass", objpar)
Using dr
While dr.Read()
Dim par As New CQuestion
Populate_Pass(dr, par)
objclas.Add(par)
End While
End Using
Return objclas
End Function