We use cookies to give you the best experience on our website. If you continue to browse, then you agree to our privacy policy and cookie policy. (Last updated on: November 16, 2018).
Unfortunately, activation email could not send to your email. Please try again.
Syncfusion Feedback

Changeing data in the dataset directly

Thread ID:





33094 Aug 12,2005 12:52 PM UTC Aug 12,2005 05:03 PM UTC WinForms 4
Tags: GridControl
Asked On August 12, 2005 12:52 PM UTC

When changing the data in the DataTable that is bound to the GDBG, the data on the grid does not always refresh, even when executing a Refresh method. I have also invalidated the row manually prior to issuing the Refresh and that does not help either. A symptom seems to be that in the cell deactivated event, I can see the new value being inserted into the column, but after the row saves, the value displayed in the grid is what gets saved to the DataRow. Any clues? Thanks, Virgil

Administrator [Syncfusion]
Replied On August 12, 2005 01:33 PM UTC

If a cell is actively being edited, then changing the data directly in the datasource will not affect this actively editing as the TextBox/COmbobox/??? will still have the values that were being edited. And when the user leaves the cell, this value will be used to update the grid/datasource stepping on the value previously set. If you do not want this behavior, and it is your code that is changing the data source, you can try calling grid.CurrentCell.CancelEdit before you make the change.

Replied On August 12, 2005 02:41 PM UTC

Hi Clay, Let me explain a little bit more about what I am doing. In the GDBG I have 2 values, one for quoted and one for actual. When the quoted value changes, the actual must also change by a like amount. For example: The quoted value is 5 and the actual value is 3. If I change the quoted to 10, then the actual has to increment by 5, becomming 8. The way I am doing this is to store off the original values in the CurrentCellActivated then in the CurrentCellDeactivated event (if it is the quoted value) get the DataRow associated with the grid row and modify the actual amout accordingly. I am modifying the datarow and not the grid because the logic for changing data is broken ito a separate busness module. This works well if I do not change the actual value first. That is, the grid refreshes properly. If, however, I change the actual value, never leave the row and simply tab to the quoted value and change it, the actual value does not change in the grid and when leaving the row the improper value gets saved to the DataRow. Below is an example of the process I am using. ------------------------------------------------------------ Grid_CurrentCellDeactivated event GridNeedsRefreshed = PurchasedPart.DataChanged(_ChangedColumnName, Row, _OriginalValue) If GridNeedsRefreshed Then _Grid.Refresh() End If ------------------------------------------------------------ PurchasedPart.DataChanged method Select Case ChangedColumnName Case ColumnNames.BaseQuoteData.QuotedQuantity Call WorkflowHelpers.SetActualValue(ChangedRow, ColumnNames.BaseQuoteData.QuotedQuantity, ColumnNames.BaseQuoteData.ActualQuantity, OriginalValue) Result = True ------------------------------------------------------------ Public Shared Sub SetActualValue(ByVal ChangedRow As DataRow, ByVal QuotedColumnName As String, ByVal ActualColumnName As String, ByVal OriginalValue As Double) Dim DiffDouble As Double DiffDouble = Math.Abs(ChangedRow(QuotedColumnName) - OriginalValue) If IsDBNull(ChangedRow(ActualColumnName)) Then ChangedRow(ActualColumnName) = 0.0 End If If OriginalValue < ChangedRow(QuotedColumnName) Then ChangedRow(ActualColumnName) += DiffDouble Else ChangedRow(ActualColumnName) -= DiffDouble End If End Sub

Administrator [Syncfusion]
Replied On August 12, 2005 04:25 PM UTC

Try setting grid.Binder.DirectSaveCellInfo = true in Form.Load to see if that makes a difference.

Replied On August 12, 2005 05:03 PM UTC

The wonderful magical you comes through again! Thanks.


This post will be permanently deleted. Are you sure you want to continue?

Sorry, An error occured while processing your request. Please try again later.

Please sign in to access our forum

This page will automatically be redirected to the sign-in page in 10 seconds.

Warning Icon You are using an outdated version of Internet Explorer that may not display all features of this and other websites. Upgrade to Internet Explorer 8 or newer for a better experience.Close Icon