Solved

How to edit a single column in gridview? Asp.net 2.0, vb, sql express

Posted on 2010-11-21
9
831 Views
Last Modified: 2012-08-14
I want to be able to readout all columns in a table called qAdvent but allow insert/update of only one column. Is there a way to do this?

I would prefer that the column that performs the update contain a dropdown list with Yes and No as the choices. The underlying field is a text field that will have either yes or no.

Here's my gridview code. I don't know where to go from here.


<asp:GridView ID="GridView1" runat="server" AllowPaging="True" 
               AllowSorting="True" AutoGenerateColumns="False" CellPadding="4" 
               DataSourceID="SqlDataSource1" ForeColor="#333333" GridLines="None" 
                DataKeyNames="qAdventID">
               <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
               <Columns>
                   <asp:CommandField ShowEditButton="True" />
                   <asp:BoundField DataField="quoteNum" HeaderText="quoteNum" 
                       SortExpression="quoteNum" InsertVisible="False" />
                   <asp:BoundField DataField="contract" HeaderText="contract" 
                       SortExpression="contract" />
                   <asp:BoundField DataField="location" HeaderText="location" 
                       SortExpression="location" />
                   <asp:BoundField DataField="serviceLevel" HeaderText="serviceLevel" 
                       SortExpression="serviceLevel" />
                   <asp:BoundField DataField="clientName" HeaderText="clientName" 
                       SortExpression="clientName" />
                   <asp:BoundField DataField="address1" HeaderText="address1" 
                       SortExpression="address1" />
                   <asp:BoundField DataField="city" HeaderText="city" 
                       SortExpression="city" />
                   <asp:BoundField DataField="itemName" HeaderText="itemName" 
                       SortExpression="itemName" />
                   <asp:BoundField DataField="serialNum" HeaderText="serialNum" 
                       SortExpression="serialNum" />
                   <asp:BoundField DataField="beginDate" HeaderText="beginDate" 
                       SortExpression="beginDate" />
                   <asp:BoundField DataField="endDate" HeaderText="endDate" 
                       SortExpression="endDate" />
                   <asp:BoundField DataField="annCost" HeaderText="annCost" 
                       SortExpression="annCost" />
                   <asp:BoundField DataField="proRateCost" HeaderText="proRateCost" 
                       SortExpression="proRateCost" />
                   <asp:BoundField DataField="flagForRemoval" HeaderText="flagForRemoval" 
                       SortExpression="flagForRemoval" />
               </Columns>
               <EditRowStyle BackColor="#999999" />
               <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
               <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
               <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
               <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
               <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
               <SortedAscendingCellStyle BackColor="#E9E7E2" />
               <SortedAscendingHeaderStyle BackColor="#506C8C" />
               <SortedDescendingCellStyle BackColor="#FFFDF8" />
               <SortedDescendingHeaderStyle BackColor="#6F8DAE" />
           </asp:GridView>

Open in new window

0
Comment
Question by:MHenry
[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
  • 6
  • 3
9 Comments
 
LVL 52

Accepted Solution

by:
Carl Tawn earned 500 total points
ID: 34184425
making a single column editable is easy enough, you just need to add:

ReadOnly="true"

To all of the columns that should not be editable.

You will need to use a TemplateField for the column that should be a dropdown. This should get you started:

    http://msdn.microsoft.com/en-us/library/bb288032.aspx
0
 
LVL 7

Author Comment

by:MHenry
ID: 34184754
carl_tawn,

When I did it that way, it erased everything in the database by assigning everything as null except that one column.

0
 
LVL 7

Author Comment

by:MHenry
ID: 34184759
I would also like to do this with a submit button instead of as an edit field. That way I can send an email notification when it has been updated if at all possible.
0
Free Webinar: AWS Backup & DR

Join our upcoming webinar with experts from AWS, CloudBerry Lab, and the Town of Edgartown IT to discuss best practices for simplifying online backup management and cutting costs.

 
LVL 7

Author Comment

by:MHenry
ID: 34184876
ah. convertEmptyStringToNull needs to be set to false.

anyway to do this with a button though? Really need to send a notification email.
0
 
LVL 7

Author Comment

by:MHenry
ID: 34184982
still stripping out everything even with the convertEmptyStringToNull set to false...
0
 
LVL 52

Expert Comment

by:Carl Tawn
ID: 34186072
What update command are you using for your SqlDataSource?
0
 
LVL 7

Author Comment

by:MHenry
ID: 34188669
I used the standard thing inserted by vs2010
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:adventConnectionString %>"
            
            SelectCommand="SELECT * FROM [qAdvent] ORDER BY [quoteNum] DESC, [contract] DESC" 
            DeleteCommand="DELETE FROM [qAdvent] WHERE [qAdventID] = @qAdventID" 
            InsertCommand="INSERT INTO [qAdvent] ([dbDate], [quoteNum], [contract], [location], [serviceLevel], [clientName], [address1], [city], [itemName], [serialNum], [beginDate], [endDate], [annCost], [proRateCost], [flagForRemoval]) VALUES (@dbDate, @quoteNum, @contract, @location, @serviceLevel, @clientName, @address1, @city, @itemName, @serialNum, @beginDate, @endDate, @annCost, @proRateCost, @flagForRemoval)" 
            UpdateCommand="UPDATE [qAdvent] SET [dbDate] = @dbDate, [quoteNum] = @quoteNum, [contract] = @contract, [location] = @location, [serviceLevel] = @serviceLevel, [clientName] = @clientName, [address1] = @address1, [city] = @city, [itemName] = @itemName, [serialNum] = @serialNum, [beginDate] = @beginDate, [endDate] = @endDate, [annCost] = @annCost, [proRateCost] = @proRateCost, [flagForRemoval] = @flagForRemoval WHERE [qAdventID] = @qAdventID">

Open in new window

0
 
LVL 52

Expert Comment

by:Carl Tawn
ID: 34189883
Ok, because you are deviating from the IDE generated code you will need to manually tweak the UPDATE statement and it's associated parameters to exlude the columns that you want to have as read only.

So, remove each column name (enclosed in []) and each associated parameter (things starting with @), and then remove the corresponding elements from the <UpdateParameters> element. You need to leave the [qAdventID] column in there though because that is the key used for performing the update.
0
 
LVL 7

Author Comment

by:MHenry
ID: 34192589
woo hoo!

thanks carl_tawn!
0

Featured Post

Independent Software Vendors: 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!

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
visual studio vb.net windows onkeyup 2 30
Need help with another query 10 39
Convert VB web project to C# 3 41
Check only one toolstripmenu item 12 31
Data architecture is an important aspect in Software as a Service (SaaS) delivery model. This article is a study on the database of a single-tenant application that could be extended to support multiple tenants. The application is web-based develope…
If you need to start windows update installation remotely or as a scheduled task you will find this very helpful.
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…

730 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