Vb net rowupdating
I know its very annoying and hard to get the data out of the data controls (gridview in this case), but there are other things you can do to make it easier.
The reason is we don't fill the values unless your are bound to a datasource control.
are iterated over and each parameter variable in the update statement is replaced with the value for that parameter. Event Args e) private void da_Row Updating(object sender, Sql Row Updating Event Args e) object.
Single quote delimiters are added around the string values. The solution delimits the string values for the Category Name and Description fields in the Categories table from the Northwind database used in this example.
There must be something fundamentally wrong that some of us are doing that is causing this and the fact that it's not happening to others, and they don't know the solution. this only works when the databind happends after the updating. My suggestion to you would be to either subclass gridview, and expose the Extract Row Values though a public method or stick everything you need in Data Keynames. Extract Values From Cell(dict Values, dcfc Cell, gv Row. Row State, True) End If Next control Dim return Values = New Dictionary (Of String, Object )() For Each de As Dictionary Entry In values return Values(CStr(de. Value Next de Return return Values End Function I appreciate your quick and prompt reply, which I looked at from home last night, but was not able to test it until just now, and really the only different was adding the Try Cast. You're trying to extract the values from the edit row right?
It'd be great if you could provide some sample code here. I am using the Row Updating event to programmatically update my database, but the new values are already gone by the time the Row Updating event is fired. I have found several forum postings detailing this but no one has posted their solution. Another way to get values out of the gridview is to put the interesting fields in Data Key Names, which can be a very ugly solution because the viewstate grows as a result of this.
private void Custom Adapter Batch Update Form_Load(object sender, System.
Selected Then c = 1 If c = 1 Then str Params = "(Project Status = '" & Check Box List1. Text & "')" Else str Params &= " OR (Project Status = '" & Check Box List1. Finally, the statement is added to a // Namespaces, variables, and constants using System; using System. Ensure that strings, dates, and any other fields are properly delimited when values are substituted for parameter names in the , the solution remains fundamentally the same if you use your own custom updating logic. Sql Client; private const String CATEGORIES_TABLE = "Categories"; private const String CATEGORYID_FIELD = "Category ID"; private Data Table dt; private Sql Data Adapter da; private Sql Command Builder cb; private String Builder sb; // . Event Args e) private void update Button_Click(object sender, System.Row Deleting – Occurs when a row's Delete button is clicked, but before the Grid View control deletes the row.
Here’s the code to cancel update and delete in a Grid View: Suprotim Agarwal, Developer Technologies MVP (Microsoft Most Valuable Professional) is the founder and contributor for Dev Curry, Dot Net Curry and SQLServer Curry.
I have a dynamically created gridview, it's autogeneratedcolumns is set to True, and it databinds on every postback. If i move the databind to load (which fires before the Row Updating) it ceases to work correctly, and the newvalues are null. Dim o Conn as new Sql Connection("") Dim o Cmd as new Sql Command("Update Sp", o Conn) o Cmd. Guys maybe it's just Friday evening and I've already had 1 Guinness to ease the tension, but you two just flew about 30,000 feet over my head. Crack open reflector and look at the Grid View's source code. The event arguments will ALWAYS be empty unless you are bound to a datasource control. created the following code in VB, and though it runs without error, it's not doing anything for me. This is such a monumental show stopper after all the work I have put into this web site, I can't believe there isn't a straight forward method of retrieving the new values. Edit Index) Dim dict Values As New Ordered Dictionary Dim o Ctl As Control For Each o Ctl In gv Row. Row State, False) End If Next Dim dict Entry As Dictionary Entry For Each dict Entry In dict Values Try Msg Box(dict Entry. To String) Catch ex As Exception End Try Next Public Shared Function Get Values(row As Grid View Row) As IDictionary (Of String, Object ) Dim values = New Ordered Dictionary() For Each control As Control In row. Unfortunately I am getting identical results...same I have always been getting which is just the old values. Try to write a small sample with one column and that one event and see if it works.