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Why some parameters are duplicated in the code of data source

Posted on 2012-03-18
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Last Modified: 2012-03-18
Hi:

We're creating some web application using VS 2010 with Visual Basic.

We try to insert a new record into an ACCESS table, or update/delete an existing record using DetailsView associated with AccessDataSource

We configure DetailsView to bind with the AccessDataSource and also configure the AccessDataSource for SELECT, INSERT, UPDATE, and DELETE statements.

In DetailsView we check "Enable Inserting", "Enable Editing", "Enable Deleting"

We currently have a problem with editing, deleting, and inserting. We're trying to figure out what causes the problem. We looked into the auto-generated code of AccessDataSource. We found that some parameters are duplicated:

In <DeleteParameters> and <UpdateParameters>, the parameters "Amount" and "Tax" are duplicated. (I've bolded them in the below source code).

Would you help to look into these and let us know if this is some kind of error or why they're duplicated.

Thanks a lot for any help,

Somits

//---------------------------

<asp:AccessDataSource ID="AccessDataSource1" runat="server"
DataFile="~/App_Data/Database3.accdb"
               SelectCommand="SELECT * FROM [vb_access_db3_tb2]"
ConflictDetection="CompareAllValues"
               DeleteCommand="DELETE FROM [vb_access_db3_tb2] WHERE
(([Order ID] = ?) OR ([Order ID] IS NULL AND ? IS NULL)) AND
(([Amount] = ?) OR ([Amount] IS NULL AND ? IS NULL)) AND (([Tax] = ?)
OR ([Tax] IS NULL AND ? IS NULL))"
               InsertCommand="INSERT INTO [vb_access_db3_tb2] ([Order
ID], [Amount], [Tax]) VALUES (?, ?, ?)"
               OldValuesParameterFormatString="original_{0}"
               UpdateCommand="UPDATE [vb_access_db3_tb2] SET [Amount]
= ?, [Tax] = ? WHERE (([Order ID] = ?) OR ([Order ID] IS NULL AND ? IS
NULL)) AND (([Amount] = ?) OR ([Amount] IS NULL AND ? IS NULL)) AND
(([Tax] = ?) OR ([Tax] IS NULL AND ? IS NULL))">
               <DeleteParameters>
                   <asp:Parameter Name="original_Order_ID" Type="String" />
                   <asp:Parameter Name="original_Amount" Type="Double" />
                   <asp:Parameter Name="original_Amount" Type="Double" />
                   <asp:Parameter Name="original_Tax" Type="Double" />
                   <asp:Parameter Name="original_Tax" Type="Double" />

               </DeleteParameters>
               <InsertParameters>
                   <asp:Parameter Name="Order_ID" Type="String" />
                   <asp:Parameter Name="Amount" Type="Double" />
                   <asp:Parameter Name="Tax" Type="Double" />
               </InsertParameters>
               <UpdateParameters>
                   <asp:Parameter Name="Amount" Type="Double" />
                   <asp:Parameter Name="Tax" Type="Double" />
                  <asp:Parameter Name="original_Order_ID" Type="String" />
                   <asp:Parameter Name="original_Amount" Type="Double" />
                   <asp:Parameter Name="original_Amount" Type="Double" />
                   <asp:Parameter Name="original_Tax" Type="Double" />

                   <asp:Parameter Name="original_Tax" Type="Double" />
               </UpdateParameters>
           </asp:AccessDataSource>

//---------------------------
0
Comment
Question by:somits
2 Comments
 
LVL 6

Accepted Solution

by:
Triskelion earned 2000 total points
ID: 37734754
This looks like a bug in th auto generator.
If you delete the duplicate lines, is everything OK?

Was the wizard run more than once?
Was there any manual manipulation of the code or the schema between runs of the wizard?
0
 

Author Comment

by:somits
ID: 37734863
Hi Triskelion:

You're right. I run the wizardc more than once.

I deleted the data source and reconfigure it. The duplication is gone.
However, I still could not update the record or delete it or insert the new one.

I still miss something that cause this error. If you've some idea about this, please help me in another question.

Thanks a lot.

Somits
0

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