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Question : How to pass a scalar variable from one query to another
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How to pass a scalar variable from one query to another ??
do I need another select statement to obtain = @EquipmentID"
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<asp:SqlDataSource ID="indexpagedatasource" runat="server"
ConnectionString="<%$ ConnectionStrings:Index2PageDataSource %>"
SelectCommand="SELECT Equipment.Year, Equipment.Make, Equipment.Model, Equipment.Type, Equipment.MilesHours, Equipment.VinSerial, Equipment.Description,
Equipment.Location, Equipment.Price, Equipment.SignUpDate, UserProfile.Name, UserProfile.Company, UserProfile.Phone, UserProfile.WebsiteURL,
UserProfile.Email, Equipment.EquipmentID
FROM Equipment INNER JOIN
UserProfile ON Equipment.UserId = UserProfile.UserId
GROUP BY Equipment.Year, Equipment.Make, Equipment.Model, Equipment.Type, Equipment.MilesHours, Equipment.VinSerial, Equipment.Description,
Equipment.Location, Equipment.Price, Equipment.SignUpDate, UserProfile.Name, UserProfile.Company, UserProfile.Phone, UserProfile.WebsiteURL,
UserProfile.Email, Equipment.EquipmentID
ORDER BY Equipment.SignUpDate DESC" >
</asp:SqlDataSource>
<asp:SqlDataSource ID="indexpagedatasource2" runat="server"
ConnectionString="<%$ ConnectionStrings:Index2PageDataSource %>"
SelectCommand="SELECT CustomerImages.ImageID, CustomerImages.EquipmentID AS Expr1, CustomerImages.Title,
CustomerImages.ImageData, CustomerImages.MIMEType
FROM CustomerImages WHERE CustomerImages.EquipmentID = @EquipmentID">
</asp:SqlDataSource>
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Answer : How to pass a scalar variable from one query to another
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Another option if you want the ListView2 to update when selecting a row in ListView1 is coded below.
Notice the line
indexpagedatasource2.SelectParameters("EquipmentID").DefaultValue = ListView1.DataKeys(ListView1.SelectedIndex).Value.ToString()
inside the indexpagedatasource2_Selecting, which is triggered when a selection is made in the listview by using OnSelectedIndexChanged.
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<%@ Page Language="VB" MasterPageFile="~/Nested Master Pages/annonymous.master" Title="Untitled Page" %>
<%@ Import Namespace="System.Web.Security" %>
<%@ Import Namespace="System.IO" %>
<script runat="server">
'Dim currentUser As MembershipUser
Public Sub Page_Load()
'currentUser = Membership.GetUser()
End Sub
Protected Sub indexpagedatasource2_Selecting(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.SqlDataSourceCommandEventArgs)
' Get a reference to the currently logged on user
Dim currentUser As MembershipUser = Membership.GetUser()
' Determine the currently logged on user's UserId value
Dim currentUserId As Guid = CType(currentUser.ProviderUserKey, Guid)
' Assign the currently logged on user's UserId to the @UserId parameter
e.Command.Parameters("EquipmentID").Value = currentUserId.ToString()
indexpagedatasource2.SelectParameters("EquipmentID").DefaultValue = ListView1.DataKeys(ListView1.SelectedIndex).Value.ToString()
End Sub
Public Function ShowImg(ByVal obj As Object) As Boolean
If IsDBNull(obj) Then
' Do the processing here...
ShowImg = False
Else
ShowImg = True
End If
End Function
'Dim currentUser As MembershipUser
'Public Sub Page_Load()
'currentUser = Membership.GetUser()
'End Sub
</script>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:SqlDataSource ID="indexpagedatasource" runat="server"
ConnectionString="<%$ ConnectionStrings:Index2PageDataSource %>"
SelectCommand="SELECT Equipment.Year, Equipment.Make, Equipment.Model, Equipment.Type, Equipment.MilesHours, Equipment.VinSerial, Equipment.Description,
Equipment.Location, Equipment.Price, Equipment.SignUpDate, UserProfile.Name, UserProfile.Company, UserProfile.Phone, UserProfile.WebsiteURL,
UserProfile.Email, Equipment.EquipmentID
FROM Equipment INNER JOIN
UserProfile ON Equipment.UserId = UserProfile.UserId
GROUP BY Equipment.UserId, Equipment.Year, Equipment.Make, Equipment.Model, Equipment.Type, Equipment.MilesHours, Equipment.VinSerial, Equipment.Description,
Equipment.Location, Equipment.Price, Equipment.SignUpDate, UserProfile.Name, UserProfile.Company, UserProfile.Phone, UserProfile.WebsiteURL,
UserProfile.Email, Equipment.EquipmentID
ORDER BY Equipment.SignUpDate DESC" >
</asp:SqlDataSource>
<asp:ListView ID="ListView1" runat="server" DataKeyNames="EquipmentID" DataSourceID="indexpagedatasource" OnSelectedIndexChanged="indexpagedatasource2_Selecting">
<LayoutTemplate>
<asp:Placeholder runat="server" ID="itemPlaceholder" ></asp:Placeholder>
<br />
<br />
</LayoutTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Font-Names="Arial" Font-Size="Small"
Text='<%# Eval("EquipmentID") %>' Font-Bold="True"></asp:Label>
<asp:Label ID="YearLabel" runat="server" Font-Names="Arial" Font-Size="Small"
Text='<%# Eval("Year") %>' Font-Bold="True"></asp:Label>
<asp:Label ID="MakeLabel" runat="server" Font-Names="Arial" Font-Size="Small"
Text='<%# Eval("Make") %>' Font-Bold="True"></asp:Label>
<asp:Label ID="ModelLabel" runat="server" Font-Names="Arial" Font-Size="Small"
Text='<%# Eval("Model") %>' Font-Bold="True"></asp:Label>
<asp:Label ID="TypeLabel" runat="server" Font-Names="Arial" Font-Size="Small"
Text='<%# Eval("Type") %>' Font-Bold="True"></asp:Label>
-
<span><asp:Label ID="PriceLabel" runat="server"
Font-Names="Arial" Font-Size="Small"
Text='<%# Eval("Price") %>' Font-Bold="True"></asp:Label>
</span>
<br />
<span style="font-family:Arial; font-size:small">Miles / Hours:</span>
<asp:Label ID="MilesHoursLabel" runat="server" Font-Names="Arial"
Font-Size="Small" Text='<%# Eval("MilesHours") %>'></asp:Label>
<br />
<span style="font-family:Arial; font-size:small">VIN / Serial No:</span>
<asp:Label ID="VinSerialLabel" runat="server" Font-Names="Arial"
Font-Size="Small" Text='<%# Eval("VinSerial") %>'></asp:Label>
<br />
<span style="font-family:Arial; font-size:small">Description:</span>
<asp:Label ID="DescriptionLabel" runat="server" Font-Names="Arial"
Font-Size="Small" Text='<%# Eval("Description") %>'></asp:Label>
<br />
<span style="font-family:Arial; font-size:small">Location:</span> 
<asp:Label ID="LocationLabel" runat="server" Font-Names="Arial"
Font-Size="Small" Text='<%# Eval("Location") %>'></asp:Label>
<br />
<span style="font-family:Arial; font-size:small;font-weight:bold">For more info contact:</span>
<asp:Label ID="NameLabel" runat="server" Font-Names="Arial" Font-Size="Small"
Font-Bold="True" Text='<%# Eval("Name") %>'></asp:Label>
-
<asp:Label ID="PhoneLabel" runat="server" Font-Names="Arial" Font-Size="Small"
Font-Bold="True" Text='<%# Eval("Phone") %>'></asp:Label>
<br />
<asp:HyperLink ID="Email" runat="server" Font-Names="Arial"
Font-Size="Small" NavigateURL='<%# Eval("Email") %>'
Text='<%# Eval("Email") %>'></asp:HyperLink>
<br />
<asp:HyperLink ID="WebsiteURL" runat="server" Font-Names="Arial"
Font-Size="Small" NavigateURL='<%# Eval("WebsiteURL") %>'
Text='<%# Eval("WebsiteURL") %>'></asp:HyperLink>
<br />
<asp:Label ID="SignUpDate" runat="server" Font-Names="arial"
Font-Size="Smaller" Text='<%# Eval("SignUpDate", "{0:d}") %>'></asp:Label>
<br />
</asp:SqlDataSource>
</ItemTemplate>
<ItemSeparatorTemplate>
<hr />
<br />
</ItemSeparatorTemplate>
</asp:ListView>
<asp:ListView ID="ListView2" runat="server" DataKeyNames="EquipmentID" DataSourceID="indexpagedatasource2">
<LayoutTemplate>
<asp:Placeholder runat="server" ID="itemPlaceholder" ></asp:Placeholder>
<br />
<br />
</LayoutTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Font-Names="Arial" Font-Size="Small"
Text='<%# Eval("EquipmentID") %>' Font-Bold="True"></asp:Label>
<asp:Label ID="Label2" runat="server" Font-Names="Arial" Font-Size="Small"
Text='<%# Eval("Title") %>' Font-Bold="True"></asp:Label>
<asp:Image ID="ImageData1" runat="server" Height="100px"
ImageUrl='<%# Eval("ImageData") %>' />
</ItemTemplate>
<ItemSeparatorTemplate>
<hr />
<br />
</ItemSeparatorTemplate>
</asp:ListView>
<asp:SqlDataSource ID="indexpagedatasource2" runat="server"
ConnectionString="<%$ ConnectionStrings:Index2PageDataSource %>"
SelectCommand="SELECT CustomerImages.ImageID, CustomerImages.EquipmentID AS Expr1, CustomerImages.Title,
CustomerImages.ImageData, CustomerImages.MIMEType
FROM CustomerImages WHERE CustomerImages.EquipmentID = @EquipmentID">
<SelectParameters>
<asp:Parameter Name="EquipmentID" Type="Int32" />
</SelectParameters>
<asp:DataPager ID="DataPager1" runat="server" PagedControlID="ListView1"
PageSize="5">
<Fields>
<asp:NextPreviousPagerField PreviousPageText="<" ShowFirstPageButton="true"
ShowNextPageButton="False" />
<asp:NumericPagerField />
<asp:NextPreviousPagerField NextPageText=">" ShowLastPageButton="True"
ShowPreviousPageButton="False" />
</Fields>
</asp:DataPager>
</asp:Content>
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