Onrowupdated vs onrowupdating

onrowupdated vs onrowupdating-7
In this article I will show you how you can use the Object Data Source with the Grid View control to do editing, updating, deleting and adding new records.There are several ways to perform these operations, I am using the simplest approach.

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The Row Updating event is raised when a row's Update button is clicked, but before the Grid View control updates the row.

This enables you to provide an event-handling method that performs a custom routine, such as canceling the update operation, whenever this event occurs.

Instead, you can use the on Cell Click option to handle the event.

When implementing a handling function for this event, use the object passed to this function as its parameter.

Dim cust Adapter As Sql Data Adapter = New Sql Data Adapter( _ "SELECT Customer ID, Company Name FROM Customers", connection) ' Add handlers. Row Updating, New Sql Row Updating Event Handler( _ Address Of On Row Updating) Add Handler cust Adapter. Row Updating, _ New Sql Row Updating Event Handler(Address Of On Row Updating) Remove Handler cust Adapter.

Row Updated, New Sql Row Updated Event Handler( Address Of On Row Updated) ' Set Data Adapter command properties, fill Data Set, and modify Data Set. Update(cust DS, "Customers") ' Remove handlers. Row Updated, _ New Sql Row Updated Event Handler(Address Of On Row Updated) Private Shared Sub On Row Updating(sender As Object, _ args As Sql Row Updating Event Args) If args. Doing this, you may notice when the function assigned to the on Content Ready option is called.This function counts its own invocations and displays this number. Message End If End Sub // Assumes that connection is a valid Sql Connection object. Row Updating -= new Sql Row Updating Event Handler(On Row Updating); cust Adapter. Add(New Object() _ ) ' Set the Row Error containing the value for the third column. will ignore this property and will always use database generated values. Close() End If End Sub Private Shared Sub On Row Updated( _ sender As Object, args As Sql Row Updated Event Args) If args. Fill(data Set, "This Table") Private Shared Sub Fill Error(sender As Object, _ args As Fill Error Event Args) If args. You can allow a user to reorder columns at runtime by setting the allow Column Reordering option to true.In this example, you can perform various operations in a grid, including sorting, grouping and filtering.Initially, columns appear in the order specified by the columns array.If you skip specifying this array, columns will mirror the order of fields in the first object from the data Source.


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