The datasource for the dategridview is also unbound until runtime.
here is what I have: For Each o Row As Data Grid View Row In dg Vendors.
An alternative way would be to add the items to the Data Grid View Combo Box Column control directly, as shown: '---adding columns--- Data Grid View1.
Data Source = bindingsource '---add a combobox column to the Data Grid View control--- Data Grid View1. Add(combo Box Col) The previous code showed how you can bind a Binding Source control (containing a list of items to let the users choose) to a Data Grid View Combo Box Column control inside a Data Grid View control.
In your example, you use the Cell Validating event, as shown below: Here, you want to ensure that the length of the new Customer ID is at least five characters.
You do this by using the Formatted Value property of the Data Grid View Cell Validating Event Args parameter.
These questions have been collected from a variety of sources including some newsgroups, MSDN site and a few, answered by me at the MSDN forums. Command Text = "update dbo.trans set status = 'CLOSED' where transid = '" & RTrim(o Row. Execute Non Query() Insert CNt = Insert CNt 1 End If Next Unfortunate, for me, whenever I hit a checkbox that has not been checked I get an exception of "Conversion from string "" to type 'Boolean' is not valid." and kicked to my catch and stops trying other rows. Thanks Tom For Each o Row As Data Grid View Row In dg Vendors. NET windows app (not ASP), so I can validate it before the change is applied to the dataset. To String () What do I need to do to get the new value entered by the user? The following code gets the ORIGINAL value in the cell, but I can't figure out how to obtain the NEW value: grd Services. I've tried the _Validating function, which fires when the user leaves the cell (and, oddly, when the user enters another cell), but its arguments don't appear to contain any properties to obtain the NEW value, just the OLD one. Here's the answer I've finally found, if anybody cares: Although it seems intuitive, you CANNOT check the new value by referencing the grid. Proposed Value, String) & " - Expected blah, blah, blah...") End If End If End Sub Next, the Column Changing event has to be related to the table in the dataset: Add Handler Data Set Name. Column Changing, Address Of Column Changing Validation Then when the user enters a value into the indicated column and tabs out or clicks on another cell or another control, the event fires and the error indicator appears on the grid row and column.