似乎无法将 guid (userID) 插入表中!
我正在使用 Visual Studio 2010 为我的一个 uni 模块创建一个 Web 项目。 我正在使用 asp.net 会员资格,并且所有 sql-server 表都已正确设置(我很确定)。
我有一个自己创建的表单,它使用 sqlDataSource.insert() 插入到数据库中。最初我遇到了一些问题,根本无法将任何数据插入表中,但我已经解决了这个问题。
我现在的问题是我需要将当前登录用户的 userID 插入表的一列中。但每次我点击提交按钮时,我都会被告知不能在 userID 列中插入空值。
我可以使用以下代码片段检索用户ID:
Dim userID As String
Dim memUser As MembershipUser
memUser = Membership.GetUser()
userID = memUser.ProviderUserKey.ToString()
e.Command.Parameters(0).Value = userID
这是页面背后的代码:
Public Class WebForm1
Inherits System.Web.UI.Page
'Dim userID As Guid = CType(memUser.ProviderUserKey, Guid)
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
'Dim UserID As Guid = CType(Membership.GetUser.ProviderUserKey, Guid)
'memUser = Membership.GetUser()
Dim userID As Guid
Dim memUser As MembershipUser
memUser = Membership.GetUser()
userID = memUser.ProviderUserKey
If IsPostBack() Then
Session.Add("UserID", userID)
Else
userID = Session("UserID")
End If
TextBox1.Text = userID.ToString
End Sub
Protected Sub SqlDataSource1_Selecting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.SqlDataSourceSelectingEventArgs) Handles SqlDataSource1.Selecting
e.Command.Parameters(0).Value = userID
End Sub
Protected Sub buttonInsertCitation_Click(ByVal sender As Object, ByVal e As EventArgs) Handles buttonInsertCitation.Click
SqlDataSource1.Insert()
End Sub
End Class
正如您所看到的,它有点混乱,我一直在疯狂地尝试不同的变体,因为我需要赶上其他大学的步伐模块。
这是来自 .aspx 页面的 SQLDataSource,控制参数对于我插入的其他数据运行良好。也许
是错误的?
<InsertParameters>
<asp:parameter name="userID" />
<asp:ControlParameter ControlID="textNotes" Name="notes" PropertyName="Text" />
<asp:ControlParameter ControlID="textEssayTitle" Name="essayTitle" PropertyName="Text" />
<asp:ControlParameter ControlID="radioIsPrivate" Name="isPrivate" PropertyName="Text" />
<asp:ControlParameter ControlID="dropPaperID" Name="paperID" PropertyName="Text" />
</InsertParameters>
我对 vb 比较陌生,我来自 html & CSS 背景。
I'm creating a web project for one of my uni modules using Visual studio 2010.
I'm using asp.net membership and have all of my sql-server tables set up correctly (I'm pretty sure).
I have a form that I have created myself that inserts into the database using sqlDataSource.insert(). I had some problems initially with not being able to insert any data into the table at all, but I have cleared that up.
My problem now is that I need to insert the currently logged in user's userID into one of the columns of the table. But every time I hit the submit button, I am told I cannot insert null values in the userID column.
I can retrieve the userID using this snippet:
Dim userID As String
Dim memUser As MembershipUser
memUser = Membership.GetUser()
userID = memUser.ProviderUserKey.ToString()
e.Command.Parameters(0).Value = userID
This is the code behind for the page:
Public Class WebForm1
Inherits System.Web.UI.Page
'Dim userID As Guid = CType(memUser.ProviderUserKey, Guid)
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
'Dim UserID As Guid = CType(Membership.GetUser.ProviderUserKey, Guid)
'memUser = Membership.GetUser()
Dim userID As Guid
Dim memUser As MembershipUser
memUser = Membership.GetUser()
userID = memUser.ProviderUserKey
If IsPostBack() Then
Session.Add("UserID", userID)
Else
userID = Session("UserID")
End If
TextBox1.Text = userID.ToString
End Sub
Protected Sub SqlDataSource1_Selecting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.SqlDataSourceSelectingEventArgs) Handles SqlDataSource1.Selecting
e.Command.Parameters(0).Value = userID
End Sub
Protected Sub buttonInsertCitation_Click(ByVal sender As Object, ByVal e As EventArgs) Handles buttonInsertCitation.Click
SqlDataSource1.Insert()
End Sub
End Class
As you can see it is a bit of a mess, I've been frantically trying different variations, as I need to catch up a little with other uni modules.
Here is my SQLDataSource from the .aspx page, The controlparameters work fine for the other data I am inserting. maybe the <asp:parameter name="userID" />
is wrong?
<InsertParameters>
<asp:parameter name="userID" />
<asp:ControlParameter ControlID="textNotes" Name="notes" PropertyName="Text" />
<asp:ControlParameter ControlID="textEssayTitle" Name="essayTitle" PropertyName="Text" />
<asp:ControlParameter ControlID="radioIsPrivate" Name="isPrivate" PropertyName="Text" />
<asp:ControlParameter ControlID="dropPaperID" Name="paperID" PropertyName="Text" />
</InsertParameters>
I'm relatively new to vb, and I come from a html & css background.
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使用 ASP.NET 成员资格提供程序,您无需担心执行任何 SQL。
With the ASP.NET membership providers, you don't need to worry about performing any sql.