Gridview rowupdating e oldvalues
Please help me with writing a Row Updating function in C#, I don't know how to grab the current field's value and also get the old value for one of keys (which is Project Name for editing) of the selected row. the idea wa to don't allow binding the grid view after a post back.
hello my problem was that my gridview editable controls heep their old values. this is due to the grid view binding in the page_load method after every post back.
How are you binding the data columns from datasource, through the Bound Field or template fields with customized html ? | | - Mark | Empty Data Text="the cart is empty" On Page Index Changing="grid Cart_Page Index Changing" On Row Canceling Edit="grid Cart_Row Canceling Edit" On Row Deleting="grid Cart_Row Deleting" On Row Editing="grid Cart_Row Editing" On Row Updating="grid Cart_Row Updating" Hi Mark, Thanks for your response and the code you provided, so you're using a custom class collection without using any Data Source control, I think this should be the cause of the parameters collection in Row Updating event being empty. Anyway, you can also add the suggestion on the MSDN feedback center. (This posting is provided "AS IS", with no warranties, and confers no rights.) -------------------- | NNTP-Posting-Date: Mon, -0600 | From: Mark Olbert | Newsgroups: microsoft.public.dotnet.framework.aspnet | Subject: Re: Grid View: Empty Old Values, New Values | Date: Mon, -0800 | Organization: Olbert & Mc Hugh, LLC | Reply-To: ma**@| Message-ID: | X-Newsreader: Forte Agent 3.1/32.783 | MIME-Version: 1.0 | Content-Type: text/plain; charset=us-ascii | Content-Transfer-Encoding: 7bit | Lines: 11 | X-Trace: sv3-U9n K6Tome E9bhjk We Xcn08z AR1r LXufi10Yw Ngyd0i3SWg Cu z Pj D1xg6GVJGAb K7Dnh2WO b Vwt Og T!
Also, if convenient, would you post some detailed code snippet of your page and the code behind on this? All the parameters are actually associated to the Parameters declared in Data Source control (the select and update statement in Data Source control), also we can find some parameter name related attribute such as Old Values Parameter Format String="original_" So when we do not using Data Source control, there is no info for populating named parameters .... Also, I think it'll still require us to use Data Source Control when we need to Updating event to contains Parameters collection, however, it may become more user friendly if there're some additional functions on the Data Bound control which can help extract bound values from each row /column... ha AJ9Znc P8Ei3q L2 n GKN1K6B5U57An5w PDTl Bf TR hgoc D5IBPrxek8Ok Q6ARdran47 nw== | X-Complaints-To: ab***@| X-DMCA-Notifications: X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers | X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly | X-Postfilter: 1.3.32 | Path: TK2MSFTNGXA02gbl!
This dictionary contains all fields in the row except the key fields.
It seems that its not getting the oldvalues and returns a null, which is something strange. If you are not using a 'standard' datasource New/Old Values are not always available in the Row Updating event.
I would greatly appreciate for any help or suggested ideas/approach in order to accomplish this task, or any sample codes snippet. Null Reference Exception: Object reference not set to an instance of an object...".
not-for-mail | Xref: TK2MSFTNGXA02gbl microsoft.public.dotnet.framework.aspnet:372922 | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet | | Steven, | | Thanx for confirming the limitation.