最好能把所有代码都贴出来
是在datagrid里面吗
如果是,好像不能这样写
是在datagrid里面吗
如果是,好像不能这样写
解决方案 »
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双击它进入cs页面看看
Imports System.Data.SqlClientPublic Class Exam_SRC
Inherits System.Web.UI.Page#Region " Web 窗体设计器生成的代码 " '该调用是 Web 窗体设计器所必需的。
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() End Sub
Protected WithEvents D As System.Web.UI.WebControls.DataList
Protected WithEvents DList_Odd As System.Web.UI.WebControls.DataList
Protected WithEvents Btn_Post As System.Web.UI.WebControls.Button
Protected WithEvents LblMsg As System.Web.UI.WebControls.Label '注意: 以下占位符声明是 Web 窗体设计器所必需的。
'不要删除或移动它。
Private designerPlaceholderDeclaration As System.Object
Protected Odd_S_ID As Integer Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
'CODEGEN: 此方法调用是 Web 窗体设计器所必需的
'不要使用代码编辑器修改它。
Dim Test_Name As String
Dim Subject_ID, Odd_S_Num_B, Mul_SNum_B, Judgement_Num_B, Compsition_Num_B, FillBlank_B As Integer
Test_Name = Session("Test_Name")
Subject_ID = (Session("Subject_ID"))
Odd_S_Num_B = Session("Odd_S Num_B")
Mul_SNum_B = Session("Mul_SNum_B")
Judgement_Num_B = Session("Judgement_Num_B")
Compsition_Num_B = Session("Compsition_Num_B")
FillBlank_B = Session("FillBlank_B") Dim myconn As New SqlConnection
myconn.ConnectionString = "Data Source=localhost;Initial Catalog=zjnuexam;User Id=sa;Password=sa;"
myconn.Open() Dim SqlStr As String
SqlStr = "select top " & Odd_S_Num_B & " Odd_S_ID,Question,Odd_A,Odd_B,Odd_C,Odd_D from OddSelection where Subject_ID='" & Subject_ID & "' order by newid()"
Dim myDataSet_Odd_S As DataSet = GetDataSet("OddSelection", SqlStr, "zjnuexam") DList_Odd.DataSource = myDataSet_Odd_S
DList_Odd.DataBind() InitializeComponent()
End Sub#End Region Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'在此处放置初始化页的用户代码 End Sub Private Function GetDataSet(ByVal myTable As String, ByVal SqlStr As String, ByVal MyDataBase As String) As DataSet
Dim myConn As New SqlConnection
myConn.ConnectionString = "Data Source=localhost;User Id=sa;Password=sa;Initial Catalog=" & MyDataBase & ";"
myConn.Open()
Dim myadapater As SqlDataAdapter = New SqlDataAdapter(SqlStr, myConn)
Dim myDataSet As New DataSet
myadapater.Fill(myDataSet, myTable)
GetDataSet = myDataSet End Function
Protected Sub Btn_Post_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
LblMsg.Text = "成功提交试卷!"
Dim i As Integer Dim SelAnswer As String
Dim RightAnswer As String Dim R_A As RadioButton
Dim R_B As RadioButton
Dim R_C As RadioButton
Dim R_D As RadioButton
Dim Lbl_Odd As Label
Dim Odd_ID As Integer For i = 0 To DList_Odd.Items.Count - 1 Dim DList_Odd_Item As DataListItem = DList_Odd.Items(i) R_A = DList_Odd_Item.FindControl("RB_A")
R_B = DList_Odd_Item.FindControl("RB_B")
R_C = DList_Odd_Item.FindControl("RB_C")
R_D = DList_Odd_Item.FindControl("RB_D")
Lbl_Odd = DList_Odd_Item.FindControl("Odd_ID") Odd_ID = Lbl_Odd.Text
If R_A.Checked Then
SelAnswer = "A"
Else
If R_B.Checked Then
SelAnswer = "B"
Else
If R_C.Checked Then
SelAnswer = "C"
Else
If R_D.Checked Then
SelAnswer = "D"
Else
SelAnswer = "0"
End If
End If
End If
End If RightAnswer = GetRightAnswer(Odd_ID) If SelAnswer = RightAnswer Then
Lbl_Odd.Text = "恭喜,您答对了!"
Lbl_Odd.Visible = True
Else
Lbl_Odd.Text = "对不起,您错了!正确答案是:" & RightAnswer.ToString
Lbl_Odd.Visible = True
End If ' Btn_Post.Enabled = False Next
End Sub Private Function GetRightAnswer(ByVal ID As Integer) As String
Dim myconn As New SqlConnection
myconn.ConnectionString = "Data Source=localhost;User Id=sa;Password=sa;Initial Catalog=zjnuexam"
myconn.Open() Dim mycmd As New SqlCommand
mycmd.Connection = myconn
mycmd.CommandText = "select Odd_key from OddSelection where Odd_S_ID=" & ID & "" Dim myreader As SqlDataReader
myreader = mycmd.ExecuteReader If myreader.Read Then
Return myreader.GetString(0)
Else
Return ""
End If myreader.Close()
myconn.Close() End Function
End Class
’如果不可以,那么该怎么写???
‘谢谢。 LblMsg.Text = "成功提交试卷!"
Dim i As Integer Dim SelAnswer As String
Dim RightAnswer As String Dim R_A As RadioButton
Dim R_B As RadioButton
Dim R_C As RadioButton
Dim R_D As RadioButton
Dim Lbl_Odd As Label
Dim Odd_ID As Integer For i = 0 To DList_Odd.Items.Count - 1 Dim DList_Odd_Item As DataListItem = DList_Odd.Items(i) R_A = DList_Odd_Item.FindControl("RB_A")
R_B = DList_Odd_Item.FindControl("RB_B")
R_C = DList_Odd_Item.FindControl("RB_C")
R_D = DList_Odd_Item.FindControl("RB_D")
Lbl_Odd = DList_Odd_Item.FindControl("Odd_ID") Odd_ID = Lbl_Odd.Text
If R_A.Checked Then
SelAnswer = "A"
Else
If R_B.Checked Then
SelAnswer = "B"
Else
If R_C.Checked Then
SelAnswer = "C"
Else
If R_D.Checked Then
SelAnswer = "D"
Else
SelAnswer = "0"
End If
End If
End If
End If RightAnswer = GetRightAnswer(Odd_ID) If SelAnswer = RightAnswer Then
Lbl_Odd.Text = "恭喜,您答对了!"
Lbl_Odd.Visible = True
Else
Lbl_Odd.Text = "对不起,您错了!正确答案是:" & RightAnswer.ToString
Lbl_Odd.Visible = True
End If Btn_Post.Enabled = False ’就是这句出现问题,说 没有实例化。??? Next
End Sub
Handles LoginBtn.Click