Formview itemupdating newvalues empty
NET - forum discussing the Microsoft languages including C#, VB. Here's my formview declaration, followed by the usual string of text boxes, labels, etc. The Update button is just the default linkbutton I notice when I set a breakpoint in the onitemupdate function, I can examing newvalues, oldvalues, and keys. Regards, Allen Chen Microsoft Online Support Delighting our customers is our #1 priority.
Learn various methods of problem solving unique to the . It looks like pretty standard stuff, but it doesn't update. The fields are all displayed correctly, with the correct data. Hi David, the Could you tell me the exception message first?
All functions work find except the update with one Date Time column.
I am using a LINQ datacontext setup and it works normal for others but not for this one.
This Form View behavior can be problematic when we we need the original object and the modified object to perform an update with conflict detection (see LINQ to SQL example below).
Note that Conflict Detection is set to Compare All Values in the Object Data Source.
We welcome your comments and suggestions about how we can improve the support we provide to you.
Hi: If you're not using Data Source control you cannot get Old Values and New Values directly. Find Control() method to find the Text Box, retrieve data to be updated and manually query database via Sql Command Old Values and New Values are the same in detailsview Item Updating method. If I put a datalist inside a datalist and a link button inside the second datalist visually it satisfies my need. So I figured maybe they have to be two-way databound to access the Old Values collection. Is it possible to arrange the controls in different direction and position inside detailsview,so that during runtime it is shown differently.
While there are other techniques you can use with Linq to SQL to avoid the issue above, the point of this post is to show how the Form View handles null values.
The workaround is to subscribe to the Form View Item Updating event and look for string.empty New Values and set those to null instead.
Hi, I'm trying to update values from Detals View using C# codebehind. Basically,the menu will be like this, Categories Sub Categories. I have a Form View control populated with some labels that use one way databinding to a database. When I run the web app, I choose to edit this field & can type whatever I want no problem. Hi zhughes, You can implement "go to the next line by pressing the enter key". How to modify the position of controls present inside detailsview?
I get 0 values for Old Value and New Value in Item Updating event, even though i try to update any row. For example, for COMPUTING category there will be NOTEBOOKS DESKTOPS etc. What I want to do is on the Form View_Item Updating event, I want to check the Old Values collections, use that to calculate some values and then insert them into the New Values collection. & Detailsview control for VS I have a detailsview control on my form thats linked to a sql file. However, I can't figure out how to "go to the next line." Pressing the enter key obviously doesn't work, & it doesn't like html like or . Hi, In formview we could position the controls anywhere we like and bind it to the datasource.