5
Próbuję uruchomić Project.aspx. Admin.apsx, po kliknięciu przycisku "WIDOK PROFILU", ma utworzyć sesję "project_id", więc dwa źródła danych SQLData otrzymują wartości project_id z sesji ("project_id").Błąd podczas przekazywania zmiennej sesji do SQLDataSource
Dostaję taki błąd:
Project.aspx
<%@ Page Title="" Language="VB" MasterPageFile="~/MasterPage.master" AutoEventWireup="false" CodeFile="Project.aspx.vb" Inherits="Project" %>
<%@ Register assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" namespace="System.Web.UI.DataVisualization.Charting" tagprefix="asp" %>
<asp:Content ID="Content3" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<div id="project-image"><asp:Image ID="Image1" runat="server" Height="124px" Width="93px" />
<asp:FormView ID="frmViewProject" runat="server" DataKeyNames="project_id" DataSourceID="SqlDataSource1" HorizontalAlign="Justify">
<EditItemTemplate>
project_id:
<asp:Label ID="project_idLabel1" runat="server" Text='<%# Eval("project_id") %>' />
<br />
project_type:
<asp:TextBox ID="project_typeTextBox" runat="server" Text='<%# Bind("project_type") %>' />
<br />
project_start:
<asp:TextBox ID="project_startTextBox" runat="server" Text='<%# Bind("project_start") %>' />
<br />
project_finish:
<asp:TextBox ID="project_finishTextBox" runat="server" Text='<%# Bind("project_finish") %>' />
<br />
project_duration:
<asp:TextBox ID="project_durationTextBox" runat="server" Text='<%# Bind("project_duration") %>' />
<br />
project_budget:
<asp:TextBox ID="project_budgetTextBox" runat="server" Text='<%# Bind("project_budget") %>' />
<br />
project_cost:
<asp:TextBox ID="project_costTextBox" runat="server" Text='<%# Bind("project_cost") %>' />
<br />
project_name:
<asp:TextBox ID="project_nameTextBox" runat="server" Text='<%# Bind("project_name") %>' />
<br />
<asp:LinkButton ID="UpdateButton" runat="server" CausesValidation="True" CommandName="Update" Text="Update" />
<asp:LinkButton ID="UpdateCancelButton" runat="server" CausesValidation="False" CommandName="Cancel" Text="Cancel" />
</EditItemTemplate>
<EditRowStyle BorderStyle="Solid" Font-Bold="False" Font-Names="Verdana" Font-Overline="False" Font-Size="Small" HorizontalAlign="Right" VerticalAlign="Middle" />
<InsertItemTemplate>
project_type:
<asp:TextBox ID="project_typeTextBox" runat="server" Text='<%# Bind("project_type") %>' />
<br />
project_start:
<asp:TextBox ID="project_startTextBox" runat="server" Text='<%# Bind("project_start") %>' />
<br />
project_finish:
<asp:TextBox ID="project_finishTextBox" runat="server" Text='<%# Bind("project_finish") %>' />
<br />
project_duration:
<asp:TextBox ID="project_durationTextBox" runat="server" Text='<%# Bind("project_duration") %>' />
<br />
project_budget:
<asp:TextBox ID="project_budgetTextBox" runat="server" Text='<%# Bind("project_budget") %>' />
<br />
project_cost:
<asp:TextBox ID="project_costTextBox" runat="server" Text='<%# Bind("project_cost") %>' />
<br />
project_name:
<asp:TextBox ID="project_nameTextBox" runat="server" Text='<%# Bind("project_name") %>' />
<br />
<asp:LinkButton ID="InsertButton" runat="server" CausesValidation="True" CommandName="Insert" Text="Insert" />
<asp:LinkButton ID="InsertCancelButton" runat="server" CausesValidation="False" CommandName="Cancel" Text="Cancel" />
</InsertItemTemplate>
<InsertRowStyle HorizontalAlign="Center" VerticalAlign="Middle" />
<ItemTemplate>
project_id:
<asp:Label ID="project_idLabel" runat="server" Text='<%# Eval("project_id") %>' />
<br />
project_type:
<asp:Label ID="project_typeLabel" runat="server" Text='<%# Bind("project_type") %>' />
<br />
project_start:
<asp:Label ID="project_startLabel" runat="server" Text='<%# Bind("project_start") %>' />
<br />
project_finish:
<asp:Label ID="project_finishLabel" runat="server" Text='<%# Bind("project_finish") %>' />
<br />
project_duration:
<asp:Label ID="project_durationLabel" runat="server" Text='<%# Bind("project_duration") %>' />
<br />
project_budget:
<asp:Label ID="project_budgetLabel" runat="server" Text='<%# Bind("project_budget") %>' />
<br />
project_cost:
<asp:Label ID="project_costLabel" runat="server" Text='<%# Bind("project_cost") %>' />
<br />
project_name:
<asp:Label ID="project_nameLabel" runat="server" Text='<%# Bind("project_name") %>' />
<br />
</ItemTemplate>
<RowStyle BorderStyle="None" HorizontalAlign="Left" VerticalAlign="Middle" />
</asp:FormView>
<asp:Chart ID="chrtComplete" runat="server" DataMember="DefaultView" DataSourceID="SqlDataSource2" EnableViewState="True">
<series>
<asp:Series ChartType="Pie" Legend="Completed" Name="Series1" XValueMember="project_start" YValueMembers="project_finish">
</asp:Series>
</series>
<chartareas>
<asp:ChartArea Name="ChartArea1">
</asp:ChartArea>
</chartareas>
<Legends>
<asp:Legend LegendStyle="Row" Name="Completed">
</asp:Legend>
</Legends>
<Titles>
<asp:Title Name="Project Completion">
</asp:Title>
</Titles>
</asp:Chart>
<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:ConnStringDb1 %>" SelectCommand="SELECT [project_start], [project_finish] FROM [projects] WHERE ([project_id] = @project_id)">
<SelectParameters>
<asp:SessionParameter Name="project_id" SessionField="project_id" Type="Int32" />
</SelectParameters>
</asp:SqlDataSource>
</div>
<div id="project-info">
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnStringDb1 %>" SelectCommand="SELECT [project_id], [project_type], [project_start], [project_finish], [project_duration], [project_budget], [project_cost], [project_name] FROM [projects] WHERE ([project_id] = @project_id)">
<SelectParameters>
<asp:SessionParameter Name="project_id" SessionField="project_id" Type="Int32" />
</SelectParameters>
</asp:SqlDataSource>
</div>
<br />
</asp:Content>
Admin.aspx
Imports System.Data.SqlClient
Partial Class Admin
Inherits System.Web.UI.Page
Protected Sub btnSearchUser_Click(sender As Object, e As EventArgs) Handles btnSearchUser.Click
Dim conn As New SqlConnection("Data Source=BRIAN-PC\SQLEXPRESS;Initial Catalog=master_db;Integrated Security=True")
Dim searchComm As String = "SELECT username FROM users WHERE CONTAINS (username, @username)"
Dim searchSQL As New SqlCommand
conn.Open()
searchSQL = New SqlCommand(searchComm, conn)
searchSQL.Parameters.AddWithValue("@username", txtUserSearch.Text)
Dim datareader As SqlDataReader = searchSQL.ExecuteReader()
While datareader.Read
lstUsers.Items.Add(datareader.Item("username"))
End While
datareader.Close()
conn.Close()
End Sub
Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
End Sub
Protected Sub DropDownList1_SelectedIndexChanged(sender As Object, e As EventArgs) Handles drpProjects.SelectedIndexChanged
Dim conn As New SqlConnection("Data Source=BRIAN-PC\SQLEXPRESS;Initial Catalog=master_db;Integrated Security=True")
Dim sqlComm As String = "SELECT project_name FROM projects WHERE [email protected]"
Dim sqlProjname As New SqlCommand
conn.Open()
sqlProjname = New SqlCommand(sqlComm, conn)
sqlProjname.Parameters.AddWithValue("@projectname", drpProjects.SelectedItem.Text)
Dim datareader As SqlDataReader = sqlProjname.ExecuteReader()
datareader.Read()
If datareader.HasRows Then
lblProjName.Text = datareader("project_name").ToString()
End If
datareader.Close()
conn.Close()
lblProjName.Visible = True
grdProjDetails.Visible = True
End Sub
Protected Sub btnManageProj_Click(sender As Object, e As EventArgs) Handles btnManageProj.Click
MultiView1.SetActiveView(View2)
End Sub
Protected Sub btnProjSettings_Click(sender As Object, e As EventArgs) Handles btnProjSettings.Click
Dim conn2 As New SqlConnection("Data Source=BRIAN-PC\SQLEXPRESS;Initial Catalog=master_db;Integrated Security=True")
Dim sqlComm2 As String = "SELECT project_id FROM projects WHERE [email protected]"
Dim sqlProjID As New SqlCommand
conn2.Open()
sqlProjID = New SqlCommand(sqlComm2, conn2)
sqlProjID.Parameters.AddWithValue("@projectname", drpProjects.SelectedItem.Text)
Dim datareader As SqlDataReader = sqlProjID.ExecuteReader()
datareader.Read()
If datareader.HasRows Then
Dim UserID As String
UserID = datareader("project_id").ToString
Session("project_id") = UserID
Server.Transfer("Project.aspx", True)
End If
datareader.Close()
conn2.Close()
End Sub
End Class
MasterPage.aspx
<%@ Master Language="VB" CodeFile="MasterPage.master.vb" Inherits="MasterPage" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<script runat="server">
Protected Sub Page_Load(sender As Object, e As EventArgs)
If Session("userid") = Nothing Then
txtLoginUser.Visible = True
txtLoginPass.Visible = True
Else
Dim conn As New SqlConnection("Data Source=BRIAN-PC\SQLEXPRESS;Initial Catalog=master_db;Integrated Security=True")
Dim useridComm As String = "SELECT name, surname FROM users WHERE [email protected]"
Dim sqlUserID As New SqlCommand
conn.Open()
Dim userid As String = Session("userid")
sqlUserID = New SqlCommand(useridComm, conn)
sqlUserID.Parameters.AddWithValue("@userid", userid)
Dim datareader As SqlDataReader = sqlUserID.ExecuteReader()
If datareader.HasRows Then
FormsAuthentication.RedirectFromLoginPage(datareader("user_id"), True)
lblLoggedIn.Text = datareader("name").ToString() & " " & datareader("surname").ToString()
End If
datareader.Close()
conn.Close()
End If
End Sub
Protected Sub Button1_Click(sender As Object, e As EventArgs)
Dim loginSQL As New SqlCommand
Dim loginComm As String
Dim CommonFunctions As New CommonFunctions()
Dim dec_pass As String = CommonFunctions.EncryptPassword(txtLoginPass.Text.Trim)
Dim conn As New SqlConnection("Data Source=BRIAN-PC\SQLEXPRESS;Initial Catalog=master_db;Integrated Security=True")
loginComm = "SELECT user_id FROM users WHERE [email protected] and [email protected]"
conn.Open()
loginSQL = New SqlCommand(loginComm, conn)
loginSQL.Parameters.AddWithValue("@username", txtLoginUser.Text.ToString)
loginSQL.Parameters.AddWithValue("@password", dec_pass)
Dim dr As SqlDataReader = loginSQL.ExecuteReader()
dr.Read()
If dr.HasRows Then
Session("userid") = dr("user_id")
ElseIf dr.HasRows = False Then
lblRegister.ForeColor = Drawing.Color.Red
lblRegister.Text = "Incorrect Username/Password."
End If
dr.Close()
conn.Close()
End Sub
</script>
<head>
<meta charset="utf-8" />
<script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<title></title>
<meta name="keywords" content="" />
<meta name="description" content="" />
<link rel="stylesheet" href="style.css" type="text/css" media="screen, projection" />
</head>
<body>
<form id="form1" runat="server">
<div id="wrapper">
<header id="header">
<strong>Header:</strong> Mobile CMS
</header>
<section id="login">
<div id="login-form">
<p>
<asp:Label ID="lblUsername" runat="server" Font-Bold="True" Text="U:"></asp:Label>
<asp:TextBox ID="txtLoginUser" runat="server" BorderStyle="None" BorderWidth="0px" Wrap="False"></asp:TextBox>
<asp:Label ID="lblUsername0" runat="server" Font-Bold="True" Text="P:"></asp:Label>
<asp:TextBox ID="txtLoginPass" runat="server" BorderStyle="None" BorderWidth="0px" TextMode="Password" Wrap="False"></asp:TextBox>
<asp:Button ID="btnLogin" runat="server" BorderStyle="None" OnClick="Button1_Click" Text="Login" />
</p>
<p>
<asp:Label ID="lblRegister" runat="server" Font-Bold="True" Font-Underline="True" ForeColor="#0000CC" Text="Register"></asp:Label>
<asp:Label ID="lblLoggedIn" runat="server"></asp:Label>
</p>
<p>
</p>
</div>
</section>
<div class="navigation-bar">
<ul class="navigation-menu">
<li><a href="#" class="home">Home</a></li>
<li><a href="#" class="mainsettings">Settings</a></li>
<li><a href="#" class="profile">Profile</a>
<ul>
<li><a href="#" class="messages">Messages</a></li>
<li><a href="#" class="settings">Profile Settings</a></li>
</ul>
</li>
<li><a href="#" class="uploads">Uploads</a></li>
<li><a href="#" class="documents">Media</a>
<ul>
<li><a href="#" class="docs">Documents</a></li>
<li><a href="#" class="others">Others</a></li>
</ul>
</li>
<li><a href="#" class="projects">Projects</a>
<ul>
<li><a href="#" class="yprojects">Your Projects</a></li>
<li><a href="#" class="otherprojects">Other Projects</a></li>
</ul>
</li>
</ul>
</div>
<section id="middle">
<div id="container">
<div id="content">
<div>
<asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</div>
</div>
</div>
</section>
<footer id="footer">
<strong>Footer:</strong> adsfdsgfds
</footer>
</div>
</form>
</body>
</html>
Zrzut ekranu: 
Co się dzieje? Co jest nie tak z kodem?
używam VS 2012 Professional z SQL Server 2012 ekspresowe
kod na 'Zobacz profil' przycisk jest w Admin.aspx pod btnProjSettings:
Protected Sub btnProjSettings_Click(sender As Object, e As EventArgs) Handles btnProjSettings.Click
Dim conn2 As New SqlConnection("Data Source=BRIAN-PC\SQLEXPRESS;Initial Catalog=master_db;Integrated Security=True")
Dim sqlComm2 As String = "SELECT project_id FROM projects WHERE [email protected]"
Dim sqlProjID As New SqlCommand
conn2.Open()
sqlProjID = New SqlCommand(sqlComm2, conn2)
sqlProjID.Parameters.AddWithValue("@projectname", drpProjects.SelectedItem.Text)
Dim datareader As SqlDataReader = sqlProjID.ExecuteReader()
datareader.Read()
If datareader.HasRows Then
Dim UserID As String
UserID = datareader("project_id").ToString
Session("project_id") = UserID
Server.Transfer("Project.aspx", True)
End If
datareader.Close()
conn2.Close()
End Sub
Kod, który napisałeś w swoim pytaniu, nie daje zbyt wiele do sprawdzenia. Masz znacznik aspx dla strony projektu, kod dla strony administratora i nic dla strony wzorcowej. Gdzie jest zdefiniowany przycisk Wyświetl profil? Możesz rzucić okiem na [ten wpis na blogu] (http://weblogs.asp.net/leftslipper/archive/2007/02/26/sys-webforms-pagerequestmanagerparsererrorexception-what-it-is-andhow-to- avoid-it.aspx), aby dowiedzieć się, jak rozwiązać ten problem. –
@MikeGuthrie Strona projektu nie zawiera żadnego kodu źródłowego vb.net, ponieważ skonfigurowałem wszystkie źródła danych za pomocą kreatora "Skonfiguruj źródło danych SQL". Kod strony głównej jest na górze – Brian
Dodano kod strony wzorcowej. – Brian