我有两个页面,Act_Summary和Details。在“摘要”页面上,他们将单击一个链接,将其带到详细信息页面。我想要3个参数,UserName,StartDate和EndDate,只要他们点击链接就会传递到详细信息页面。但是每次我点击链接时都会给我这个错误:
对象引用未设置为对象的实例
这是我在摘要页面上的代码:
Dim UserName As String = Encryption64.Decrypt(Request.QueryString("UserName"))
Dim StartDate As String = Encryption64.Decrypt(Request.QueryString("SD"))
Dim EndDate As String = Encryption64.Decrypt(Request.QueryString("ED"))
Page.Title = "" & UserName & "'s Activity Summary"
Dim SqlString As String = "Select Username, SD, ED"
Dim MyDataTable As DataTable = OleFun.GetMyDataTableString(SqlString)
WebDataGrid1.DataSource = MyDataTable
WebDataGrid1.DataBind()
这是我在详细信息页面上的代码:
XMLELEMENT( Name "Telephone",
case
when not exists (SELECT 1 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'phonebook' AND COLUMN_NAME = 'pv_an4') then ''
when exists (SELECT 1 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'phonebook' AND COLUMN_NAME = 'pv_an4') then pv_an4
end ),
提前感谢您的回复。
答案 0 :(得分:0)
哈哈哇,整个时间都是因为我有一个名为" user"在URL中,并将其解密为UserName ... Face Palm