DataSource Controls :: Unable To Retrieve Data From Two Tables While Using Inner Join?

May 25, 2010

I need to retirve data from two tables...when i click a value in dropdown list, i need to retrieve values from two tables based on that id( which i have selected in dropdown)..so when i have written query ( "Select assign_issue.issue_assigned_to, assign_issue.created_on,assign_issue.last_Date,
issue_register.issue_desc,issue_register.issue_Priority from assign_issue INNER JOIN Issue_register ON assign_Issue.Issue_ID = issue_register.Issue_ID where issue_register = '" + ddlissueid.selecteditem.text + "'")..query is executing ..when it comes to dr = cmd.executereader()..Dr is unable to read..it is showing false when i trace..unable to read into while loop.

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[Code]....

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runat="server"
AutoGenerateColumns="false">
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If
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Each
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If
Next
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If

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I am trying to update the database with the edited data. However, it did not manage to read the edited data from the textbox. It returned the retrieve data that I have done in the Page_Load instead. Is there any part of the code that I have written wrongly? I did manage not to use <EditItemTemplate> in my past project and manage to update the database with the same logic.

<aspx>
<!-- This DataList is created to view Personal Information -->
<asp:DataList ID="personal_dl" runat="server"> <ItemTemplate>
<table> <tr> <td style="width: 100px; text-align: left;">
<asp:Label ID="first_lbl" runat="server" ForeColor="Black" Font-Size="11px" Text="First:"></asp:Label></td> <td style="width: 350px">
<asp:TextBox ID="first_tb" runat="server" Width="341px" Font-Size="11px" Text='<%# Eval("FIRST") %>'> </asp:TextBox> </td> </tr> <tr>
<td style="width: 100px; text-align: left">
<asp:Label ID="name_lbl" runat="server" Font-Size="11px" ForeColor="Black" Text="Name:"></asp:Label> </td> <td style="width: 350px">
<asp:TextBox ID="name_tb" runat="server" Width="341px" Font-Size="11px" Text='<%# Eval("NAME") %>'> </asp:TextBox> </td> </tr> <tr> <td style="width: 100px; text-align: left;">
<asp:Label ID="id_lbl" runat="server" ForeColor="Black" Font-Size="11px" Text="ID:">
</asp:Label> </td> <td style="width: 350px">
<asp:TextBox ID="id_tb" runat="server" Width="341px" Font-Size="11px" Text='<%# Eval("ID") %>'> </asp:TextBox> </td> </tr> <tr> <td style="width: 100px; text-align: left;">
<asp:Label ID="contact_lbl" runat="server" ForeColor="Black" Font-Size="11px" Text="Contact No.:"> </asp:Label> </td> <td style="width: 350px">
<asp:TextBox ID="contact_tb" runat="server" Width="341px" Font-Size="11px" Text='<%# Eval("TELEPHONE_HP") %>'> </asp:TextBox> </td> </tr> <tr> <td style="width: 100px; text-align: left;"> <asp:Label ID="add_lbl" runat="server" ForeColor="Black" Font-Size="11px" Text="Address:"> </asp:Label> </td> <td style="width: 350px">
<asp:TextBox ID="add_tb" runat="server" Width="341px" Font-Size="11px" Text='<%# Eval("ADDRESS") %>'> </asp:TextBox> </td> </tr> </table> </ItemTemplate> </asp:DataList>
<br /> <div style="text-align: center; color: Red; width: 460px;">
<asp:Label ID="errorMsg_lbl" runat="server" />
<asp:Button ID="edit_btn" runat="server" Text="Update" />
<asp:Button ID="createBtn" runat="server" Text="Insert" /></div>
<aspx.vb>
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
'display information in datalist
Dim login As String = Session("login")
Dim id As String = Session("id")
bindDataList(personal_dl, getPersonalContent(login, id))
'display necessary DataList
personal_dl.Visible = True
'declare fields
Dim i As Integer
Dim first_tb, name_tb, id_tb, contact_tb, add_tb As New TextBox
For i = 0 To personal_dl.Items.Count - 1
first_tb = personal_dl.Items(i).FindControl("first_tb")
name_tb = personal_dl.Items(i).FindControl("name_tb")
id_tb = personal_dl.Items(i).FindControl("id_tb")
contact_tb = personal_dl.Items(i).FindControl("contact_tb")
add_tb = personal_dl.Items(i).FindControl("add_tb")
'set fields as ReadOnly - cannot edit
first_tb.ReadOnly = False name_tb.ReadOnly = False id_tb.ReadOnly = False
contact_tb.ReadOnly = False add_tb.ReadOnly = False Next
End Sub

Protected Sub edit_btn_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles edit_btn.Click 'declare fields
Dim i As Integer Dim first_tb, name_tb, id_tb, contact_tb, add_tb As New TextBox
Dim id As String = Session("id")
For i = 0 To personal_dl.Items.Count - 1
first_tb = personal_dl.Items(i).FindControl("first_tb")
name_tb = personal_dl.Items(i).FindControl("name_tb")
id_tb = personal_dl.Items(i).FindControl("id_tb")
contact_tb = personal_dl.Items(i).FindControl("contact_tb")
add_tb = personal_dl.Items(i).FindControl("add_tb")
Next Dim myConnection As OleDbConnection = dbConnection()
Dim cmd As New OleDbCommand
Dim sqlStatement As String
Dim condition As String
condition = "UPDATE staff " + _
"SET ((FIRST= @FIRST), (NAME = @NAME), (ID= @ID), (TELEPHONE_NO = @CONTACT_NO), (ADDRESS = @ADDRESS)) " + _
"WHERE (ID= @id)" sqlStatement = condition cmd.CommandText = sqlStatement
cmd.CommandType = CommandType.Text cmd.Parameters.AddWithValue("@FIRST", first_tb)
cmd.Parameters.AddWithValue("@NAME", name_tb)
cmd.Parameters.AddWithValue("@ID", id_tb)
cmd.Parameters.AddWithValue("@TELEPHONE_NO", contact_tb)
cmd.Parameters.AddWithValue("@ADDRESS", add_tb)
cmd.Parameters.AddWithValue("@ID", id)
cmd.Connection = myConnection
Try myConnection.Open()
cmd.ExecuteNonQuery() Catch ex As Exception
Finally If myConnection.State = ConnectionState.Open Then
myConnection.Close()
End If
End Try
'display information in datalist
Dim login As String = Session("login")
bindDataList(personal_dl, getPersonalContent(login, id))
End Sub

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Forms Data Controls :: Unable To Retrieve Cell Content In A Gridview

Oct 4, 2010

myString is always empty in the code below.

[Code]....

Here's the .aspx file:

[Code]....

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SQL Server :: Cross Join Two Tables?

Sep 10, 2010

TABLE 1
SELECT I.STUNA
,S.SNO
,SUM(B.AMT * Y.YEAR) AS AMT
FROM STUDENT S
LEFT JOIN INFO I ON S.SNO = I.SNO
LEFT JOIN BONUS B ON S.SNO = B.SSNO
LEFT JOIN YEAR Y ON S.SNO = Y.SSNO
STUNA SNO AMT
JOHN A 10
LISA B 20
ALLEN C 100

TABLE 2
SNO AMT
A 1
B 2
C 3
D 5

I WANT TO HAVE RESULT LIKE THIS (TABLE1 + TABLE2)

STUNA SNO AMT
JOHN A 11
LISA B 22
ALLEN C 103
EDDIE D 5

I TRIED USE THIS QEURY

SELECT I.STUNA
,S.SNO
,SUM(B.AMT) AS AMT
FROM STUDENT S
LEFT JOIN INFO I ON S.SNO = I.SNO
LEFT JOIN BONUS B ON S.SNO = B.SSNO
LEFT JOIN
(
SELECT SNO, SUM(AMT) AS AMT
FROM TABLE2
GROUP BY SNO
) T2 ON S.SNO = T2.SNO
GROUP BY I.STUNA,S.SNO
THE RESULT IS
STUNA SNO AMT
JOHN A 11
LISA B 22
ALLEN C 103

THE "EDDIE" WAS MISS. ALSO I TRY USE CROSS JOIN... THE RESULT IS STILL NOT CORRECT.

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Dec 9, 2010

I have T_articles to save the articles.

each article has authorCode , and categoryCode.

each article can be modified by the author several times.

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now I want to dislpay for each autor:

author name, article name , article category's name, last modified date

In SQL I should to it like that:

[Code]....

I try to write it in Linq so:

[Code]....

so I got error:

[Code]....

and again I got an error:

[Code]....

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Nov 9, 2010

Here's my DB structure:

I have three tables.

User, Details, Optional
User has fields: ID, FirstName, LastName
Details has fields: ID, MyDetails1, MyDetails2, User_ID
Optional has fields: ID, MyOptions1, MyOptions2, User_ID
There is a 1 to many relationship with User & Detail (User ID & Detail User_ID)
There is a 1 to many relationship with User & Optional (User ID & Optional User_ID)

With that said, one user can have many details and/or many optionals

Now I'm trying to build a linq query that will say:

"where user id = x, select FirstName, LastName, all MyDetails1 from every record where User_ID == x, all MyOptions1 from every record where User_ID == x"

After the merge I should have one string that lists the distict user & all of their many fields:

FirstName + LastName + (MyDetails1 + MyDetails1 + MyDetails1..etc) + (MyOptions1 + MyOptions1)

Anyone try this before?

I tried this with JOIN but this doesn't do the trick for what I'm looking for.

So if I had 3 MyDetails records associated with ID == 2, I would get three results like:

John Doe MyDetails_X
John Doe MyDetails_Y
John Doe MyDetails_Z

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