Solved

Internal Messaging System ASP.NET

Posted on 2009-04-13
10
815 Views
Last Modified: 2012-05-06
Hi there i want to set up a very very simple internal messaging system...

Pages:
DefaultMessages.aspx --> Displays two links for, 1: Inbox, 2: Compose New Message
MessagesInbox.aspx --> Displays all the Messages that user received from other users
MessagesNew.aspx --> Make new messages to send

My Access DB is:
tblUsers --> UserID, Username, Password, Firstname, Lastname
tblPMMessages --> pmID, pmSubject, pmContent, MessageFrom, MessageTo

How do i setup this to work, do i need to have a relation between UserID --> MessageFrom and UserID --> MessageTo

I don't understand the logic here...Can anyone explain how i would need to setup this to make it work, if anyone just can push me in right direction...
0
Comment
Question by:Neste
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
  • 5
10 Comments
 
LVL 15

Expert Comment

by:oobayly
ID: 24130293
If you're looking for the SQL query to to get all the messages sent to a particular user, this should do the job:
Of course, you'll want to select only the required fields rather than everything.
SELECT *
FROM tblPMMessages
INNER JOIN tblUsers ON tblPMMessages.fldMessageFrom = tblUsers.fldUserID
WHERE tblPMMessages.fldMessageTo = ?

Open in new window

0
 

Author Comment

by:Neste
ID: 24136397
I have worked whit your example and i ended up with the code provided...

It works but how do i Display the Username instead for the ID...

When a user checks his/hers Inbox, i want them to know who the messages are from...

As it is now it only displays numbers/ids....
"SELECT * FROM [tblPMMessages], [tblUsers]" & _
"WHERE [tblPMMessages.MessageFromID] = [tblUsers.UserID]" & _
"AND [tblPMMessages.MessageToID] = @id"

Open in new window

0
 
LVL 15

Accepted Solution

by:
oobayly earned 125 total points
ID: 24136504
What database server are you using? If you're using the query posted you should be receiving all fields from all tables specified in the query.
Also, you shouldn't really need the square brackets unless you have a table or field that shares a name with a keyword. ie Calling a field "Sum", or a table "View".
I'm also vaguely surprised that [tblPMMessages.MessageToID] works, as this implies that the field name is "tblPMMessages.MessageToID", not the field "MessageToID" in the table "tblPMMessages", of course this may depend on the database server.

You could of course specify the fields yourself.
SELECT
  [tblUsers].[Firstname], [tblUsers].[LastName],
  [tblPMMessages].[pmSubject], [tblPMMessages].[pmContent]
FROM [tblPMMessages], [tblUsers]
WHERE [tblPMMessages].[MessageFromID] = [tblUsers].[UserID]
AND [tblPMMessages].[MessageToID] = @id

Open in new window

0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:Neste
ID: 24136603
I am using MS Access...

Instead of MessageFromID i want to display the username from tblUsers...

0
 

Author Comment

by:Neste
ID: 24136618
here is the aspx code...

    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
        DataKeyNames="pmID">
        <Columns>
            <asp:BoundField DataField="pmID" HeaderText="pmID" InsertVisible="False"
                ReadOnly="True" SortExpression="pmID" />
            <asp:BoundField DataField="pmSubject" HeaderText="pmSubject"
                SortExpression="pmSubject" />
            <asp:BoundField DataField="pmContent" HeaderText="pmContent"
                SortExpression="pmContent" />
            <asp:BoundField DataField="pmCreateDate" HeaderText="pmCreateDate"
                SortExpression="pmCreateDate" />
            <asp:BoundField DataField="MessageToID" HeaderText="MessageToID"
                SortExpression="MessageToID" />
            <asp:BoundField DataField="MessageFromID" HeaderText="MessageFromID"
                SortExpression="MessageFromID" />
        </Columns>
    </asp:GridView>
0
 
LVL 15

Expert Comment

by:oobayly
ID: 24136641
Have you tried the query I posted, it should show the sender's name. All your should have to do is add a similar field for "Username"
0
 

Author Comment

by:Neste
ID: 24136655
yeah it works now thx m8

just added:            
<asp:BoundField DataField="Username" HeaderText="Username" SortExpression="Username" />
0
 

Author Comment

by:Neste
ID: 24136714
Any quick ides for an Insert command for this ?
0
 
LVL 15

Expert Comment

by:oobayly
ID: 24136753
Right, now I get you. Just change "MessageFromID" to "Username" for all the attributes in the BoundField tag
0
 
LVL 15

Expert Comment

by:oobayly
ID: 24136814
Should be as simple as this, assuming that pmID in an auto increment field
INSERT INTO tblPMMessages(pmSubject, pmContent, MessageFrom, MessageTo)
VALUES(@pmSubject, @pmContent, @MessageFrom, @MessageTo)

Open in new window

0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Parsing a CSV file is a task that we are confronted with regularly, and although there are a vast number of means to do this, as a newbie, the field can be confusing and the tools can seem complex. A simple solution to parsing a customized CSV fi…
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
This video shows how to use Hyena, from SystemTools Software, to update 100 user accounts from an external text file. View in 1080p for best video quality.

737 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question