Asp net gridview rowupdating e keys
To String Message="Conversion from string "Location Name" to type 'Integer' is not valid." I would prefer to get the cells by name rather then by location e.g. Keys is an array of all the data keys you define for the gridview (Data Key Names="id", where "id" is the field name from your database query) e. Old Values are arrays of all the fields in the gridview data source that are NOT leys, where, as you might guess, e.
You access the values stored in the event by index or name: e. So, to update, you might set the parameters as id = e. of course, if I have 20 columns I could define 20 data keys but I just wondered if there is another way instead of: Sql Data Source Locations.
Best Regards, Well, can you give me an example on how to achieve that myself?
retrieves the key/value of bound data in the gridview control only, and your drop-down-list it's not bound to your gridview but it is an external control.
It gets into the "On Row Updating" event just fine, but there are no New Values or Old Values. Regarding on the Grid View control's Row Updating event problem, it is the expected behavior because when we do not associate Grid View(or other ASP.
NET 2.0 databound control) with Data Source control, it won't automatically query and fill the parameters collection of the updating/deleting/... In such cases, we need to manually extract the field values from the Template control. In that case you can do it using the Extract Values From Cell method to make the New Values collection yourself.
Text could not avoid the cell numbering :/ somehow select Row.
I just tested that Protected Sub Wr_Updated(By Val sender As Object, By Val e As System.
We can achieve the same functionality using Datakeys.
Imagine that when i choose to edit a row and make some changes.. Values[index] Regards Allen, Thats exactly what i mean by "Custom Datasource" :) Sorry for not to use the right expression. so that i could recover it in edit mode and read data from the normal and edit mode...
Controls(index) ------ Controls in the Table Cell You can loop through the Grid View's rows and cells to get whatever you want. Regards Well, What i need is to have the old and the new values of the current edited record so i can keep a log of the record changes... My problem is the Old values, even with data Keys i cant make it because it is supposed to be there only the fields that are key for the grid right? I have tried to serialize to viewstate the datarow in normal state...
A common way to use these collections is to HTML-encode the values supplied by the user before they are stored in the data source.
In the preceding tutorial we examined how to add a column of radio buttons to the Grid View for the purpose of selecting a particular record.