使用查询字符串的Response.Redirect

时间:2013-03-11 20:57:54

标签: asp.net vb.net ms-access query-string response.redirect

好的,所以我刚刚编写了自己的“向数据库添加一本书”的ASP.net页面,如下所示:

<div class="addbook"><br />If you feel that we&#39;ve forgotten a book
that you love, please fill out this form 
below to help us keep the site fresh and dynamic!
<h3>Title:</h3><asp:TextBox ID="tb_booktitle" runat="server"></asp:TextBox>
<h3>Author:</h3><asp:TextBox ID="tb_bookauthor" runat="server"></asp:TextBox>
<h3>Publication Date:</h3><asp:TextBox ID="tb_bookpubyear" runat="server" ></asp:TextBox>    <asp:CompareValidator
ID="CompareValidatorTextBox1" runat="server"
ControlToValidate="tb_bookpubyear"
Type="Date"
Operator="DataTypeCheck" 
ErrorMessage="Date must be in the DD/MM/YYYY format)" ForeColor="Red"
/>
<h3>Number of Pages:</h3><asp:TextBox ID="tb_bookpages" runat="server"></asp:TextBox><asp:RangeValidator ID="RangeValidator1" runat="server" 
    ControlToValidate="tb_bookpages" 
    ErrorMessage="Please enter a number." ForeColor="Red" 
    MaximumValue="9999999" MinimumValue="1" SetFocusOnError="True"></asp:RangeValidator>


<h3>Publisher:</h3><asp:TextBox ID="tb_publisher" runat="server"></asp:TextBox>
<h3>Book Cover:</h3>
<asp:FileUpload ID="fu_picture" runat="server" />
<h3>Your Rating:</h3>
<p>    
    <asp:RadioButtonList ID="rbl_Stars" runat="server" 
    RepeatDirection="Horizontal" Width="142px">
    <asp:ListItem>1</asp:ListItem>
    <asp:ListItem>2</asp:ListItem>
    <asp:ListItem>3</asp:ListItem>
    <asp:ListItem>4</asp:ListItem>
    <asp:ListItem>5</asp:ListItem>
</asp:RadioButtonList>
</p>
<p>
    <asp:Button ID="btn_submission" runat="server" Text="Upload Book!" />
</p>

背后的代码:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

End Sub

Protected Sub btn_submission_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btn_submission.Click
    Dim myGUID = Guid.NewGuid()

    Dim newFileName As String = myGUID.ToString() & ".jpg"
    Dim fileLocationOnServerHardDisk = Request.MapPath("img/thumb") & "/" & newFileName
    fu_picture.SaveAs(fileLocationOnServerHardDisk)
    Dim oleDbConn As New OleDb.OleDbConnection(ConfigurationManager.ConnectionStrings("BookMeetConnString").ConnectionString)
    Dim SqlString As String = "Insert into booklist(Title,Author,PublicationDate,Pages,Publisher,imgurl,AverageRating)
Values (@f1,@f2,@f3,@f4,@f5,@f6,@f7)"
    Dim cmd As OleDbCommand = New OleDbCommand(SqlString, oleDbConn)
    cmd.CommandType = CommandType.Text
    cmd.Parameters.AddWithValue("@f1", tb_booktitle.Text)
    cmd.Parameters.AddWithValue("@f2", tb_bookauthor.Text)
    cmd.Parameters.AddWithValue("@f3", tb_bookpubyear.Text)
    cmd.Parameters.AddWithValue("@f4", tb_bookpages.Text)
    cmd.Parameters.AddWithValue("@f5", tb_publisher.Text)
    cmd.Parameters.AddWithValue("@f6", "img/thumb/" & newFileName)
    cmd.Parameters.AddWithValue("@f7", rbl_Stars.SelectedValue)
    oleDbConn.Open()
    cmd.ExecuteNonQuery()
    Response.Redirect("detail.aspx?ID={0}")

End Sub

Protected Sub rbl_Stars_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles rbl_Stars.SelectedIndexChanged

End Sub 
End Class

正如您在上面的代码中看到的,一旦建立了与数据库的连接,我想重定向到detail.aspx(这是一个显示来自数据库和相关内容的单个书记录的页面)一个查询字符串,用于显示刚刚添加的记录。但是我收到了这样的错误:

  

输入字符串的格式不正确。描述:未处理   在执行当前Web请求期间发生异常。   请查看堆栈跟踪以获取有关错误的更多信息   它起源于代码。

     

异常详细信息:System.FormatException:输入字符串不在   格式正确。

     

来源错误:

     

执行期间生成了未处理的异常   当前的网络请求。有关的来源和位置的信息   可以使用下面的异常堆栈跟踪来识别异常。

     

堆栈追踪:

     

[FormatException:输入字符串的格式不正确。]
  System.Number.StringToNumber(String str,NumberStyles选项,   NumberBuffer&安培; number,NumberFormatInfo info,Boolean parseDecimal)   +10722195 System.Number.ParseInt32(String s,NumberStyles style,NumberFormatInfo info)+145
  System.String.System.IConvertible.ToInt32(IFormatProvider provider)   +46 System.Convert.ChangeType(对象值,TypeCode typeCode,IFormatProvider提供者)+297
  System.Web.UI.WebControls.Parameter.GetValue(Object value,String   defaultValue,TypeCode type,Boolean convertEmptyStringToNull,Boolean   ignoreNullableTypeChanges)+126
  System.Web.UI.WebControls.Parameter.GetValue(Object value,Boolean   ignoreNullableTypeChanges)+63
  System.Web.UI.WebControls.Parameter.get_ParameterValue()+40
  System.Web.UI.WebControls.ParameterCollection.GetValues(HttpContext的   上下文,控制控制)+247
  System.Web.UI.WebControls.SqlDataSourceView.InitializeParameters(的DbCommand   command,ParameterCollection参数,IDictionary exclusionList)   +257 System.Web.UI.WebControls.SqlDataSourceView.ExecuteSelect(DataSourceSelectArguments   参数)+589
  System.Web.UI.DataSourceView.Select(DataSourceSelectArguments   参数,DataSourceViewSelectCallback回调)+21
  System.Web.UI.WebControls.DataBoundControl.PerformSelect()+138
  System.Web.UI.WebControls.BaseDataBoundControl.DataBind()+30
  System.Web.UI.WebControls.GridView.DataBind()+ 4
  System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound()+ 105   System.Web.UI.WebControls.CompositeDataBoundControl.CreateChildControls()   +75 System.Web.UI.Control.EnsureChildControls()+83 System.Web.UI.Control.PreRenderRecursiveInternal()+42
  System.Web.UI.Control.PreRenderRecursiveInternal()+ 168 8   System.Web.UI.Control.PreRenderRecursiveInternal()+ 168 8   System.Web.UI.Control.PreRenderRecursiveInternal()+ 168 8   System.Web.UI.Control.PreRenderRecursiveInternal()+ 168 8   System.Web.UI.Page.ProcessRequestMain(布尔   includeStagesBeforeAsyncPoint,Boolean includeStagesAfterAsyncPoint)   974

我将如何实现我想要做的事情?

1 个答案:

答案 0 :(得分:1)

为什么不创建一个存储过程,其输出参数为新插入的书籍的id,然后执行以下操作

If outputparam.value isnot nothing then
    Response.Redirect(String.Format("detail.aspx?ID={0}",outputparam.value)
end if

请查看此网址以获取更多信息。

Input and Output Parameters, and Return Values