Solved

ERROR: No value given for one or more required parameters

Posted on 2012-03-20
3
393 Views
Last Modified: 2012-03-20
Hi:

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

We'd like to update an record in an access database table using GridView

For some reason, when we run the code, the program crashed with the following error: No value is given for one or more required parameters

We've checked again and again but could not find anything missing: each record in GridView has 3 fields: OrderID (text - primary key), Amount (double), and Tax (double). We wanted to update the field Amount of the 1st record in GridView. When we click "Update", it crashed.

If you've some idea why it crashed, please help.

We added the code below.

Thanks a lot,

Somits

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


 <asp:Panel ID="Panel1" runat="server"


           style="z-index: 1; left: 197px; top: 242px; position:
absolute; height: 57px; width: 531px">
           <asp:AccessDataSource ID="AccessDataSource1" runat="server"
               DataFile="~/App_Data/ACCESSDB_8.accdb"
               DeleteCommand="DELETE FROM [vb_access_db8_tb1] WHERE
(([OrderID] = ?) OR ([OrderID] IS NULL AND ? IS NULL))"
               InsertCommand="INSERT INTO [vb_access_db8_tb1]
([OrderID], [Amount], [Tax]) VALUES (?, ?, ?)"
               SelectCommand="SELECT * FROM [vb_access_db8_tb1]"
               UpdateCommand="UPDATE [vb_access_db8_tb1] SET [Amount]
= ?, [Tax] = ? WHERE (([OrderID] = ?) OR ([OrderID] IS NULL AND ? IS
NULL))">
               <DeleteParameters>
                   <asp:Parameter Name="OrderID" Type="String" />
               </DeleteParameters>
               <InsertParameters>
                   <asp:Parameter Name="OrderID" 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="OrderID" Type="String" />
               </UpdateParameters>
           </asp:AccessDataSource>
       </asp:Panel>

       <asp:GridView ID="GridView1" runat="server" AllowPaging="True"
           AllowSorting="True" AutoGenerateColumns="False"
AutoGenerateDeleteButton="True"
           AutoGenerateEditButton="True" AutoGenerateSelectButton="True"
           DataKeyNames="OrderID" DataSourceID="AccessDataSource1"
           style="z-index: 1; left: 204px; top: 354px; position:
absolute; height: 127px; width: 470px">
           <Columns>
               <asp:BoundField DataField="OrderID"
HeaderText="OrderID" ReadOnly="True"
                   SortExpression="OrderID" />
               <asp:BoundField DataField="Amount" HeaderText="Amount"
                   SortExpression="Amount" />
               <asp:BoundField DataField="Tax" HeaderText="Tax"
SortExpression="Tax" />
           </Columns>
       </asp:GridView>
0
Comment
Question by:somits
  • 2
3 Comments
 
LVL 38

Accepted Solution

by:
PaulHews earned 500 total points
ID: 37743089
Your Update command has 4 parameters.

UpdateCommand="UPDATE [vb_access_db8_tb1] SET [Amount]
= ?, [Tax] = ? WHERE (([OrderID] = ?) OR ([OrderID] IS NULL AND ? IS
NULL))"

You must provide a value for every parameter or change your command.
0
 

Author Comment

by:somits
ID: 37743264
Hi PaulHews:

You're right. I didn't set the Primary Key field OrderID as Required in the Access table.
Therefore, VS generates more ? in the command statement of update.

Thanks so much for your help.

Somits
0
 

Author Comment

by:somits
ID: 37743269
Everything works correctly now.

Really appreciated,

Somits
0

Featured Post

Use Case: Protecting a Hybrid Cloud Infrastructure

Microsoft Azure is rapidly becoming the norm in dynamic IT environments. This document describes the challenges that organizations face when protecting data in a hybrid cloud IT environment and presents a use case to demonstrate how Acronis Backup protects all data.

Question has a verified solution.

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

It’s been over a month into 2017, and there is already a sophisticated Gmail phishing email making it rounds. New techniques and tactics, have given hackers a way to authentically impersonate your contacts.How it Works The attack works by targeti…
Access custom database properties are useful for storing miscellaneous bits of information in a format that persists through database closing and reopening.  This article shows how to create and use them.
Familiarize people with the process of utilizing SQL Server stored procedures from within Microsoft Access. Microsoft Access is a very powerful client/server development tool. One of the SQL Server objects that you can interact with from within Micr…
Get people started with the utilization of class modules. Class modules can be a powerful tool in Microsoft Access. They allow you to create self-contained objects that encapsulate functionality. They can easily hide the complexity of a process from…

713 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