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======================================================================================== When i set the gridview to Enable editing and then i do the code to bound the grid view to a drop down list, an error has occur when i debug the code. Data Bind(); And then, when i delete the Data Source ID (Sql Data Source1) but still maintaining the gridview to Enable Editing, then i debug the code, it can display interface with the gridview.The error is: Both Data Source and Data Source ID are defined on 'Grid View1'. But when i click the "Edit" button, An error occur.In this example, we’ll go through a fully featured Grid View with editing, deleting, selecting, sorting, and paging functionality that is manually bound and identify the limitations and some of the workarounds. Sql Data Source, Object Data Source, Linq Data Source, etc) specified in a Data Source ID, the Grid View can automate many functions because, through the data source control, the Grid View on its own can perform the following operations: When you manually bind data to a Grid View, the Grid View itself cannot perform these operations, so they must be implemented in your code.The Grid View does know the events that should be used to implement them, so the exceptions shown above are thrown when you try to perform one of these operations, but you have implemented the appropriate event handler. Raise Post Back Event(String event Argument) 13 System. Raise Post Back Event(IPost Back Event Handler source Control, String event Argument) 13 System. Thus, in order to switch it into Edit Mode, in each of your event handles (Row Editing, Row Updating, and Row Canceling Edit) you must do two things: Protected Sub Grid View1_Row Editing(By Val sender As System.
Normally we creat a Row Deleting event to overcome this error. The answer is that when you are trying to delete a row using a Row Command event with a command name of delete for your delete button Grid View itself finds that a Row_Deleting event is going to be called and waits for it but we haven't created it so the error is thrown when deleting the row that the Row_Deleting event is handled. Alternative Solution Instead of creating a event of Row Deleting, there is a best practice that you should change the command name from delete to something else like Delete_Product or something else.
First, we’ll implement a method to databind the Grid View, which will be called whenever databinding needs to be performed.
When doing delete operations in a Grid View in ASP.
The example shown here is for a Grid View, but the same types of event handlers must be implemented in roughly the same way for other data controls including the Form View, Details View, and List View. This is the final Grid View markup, so you can see the event handlers we’re going to implement.
We’ll start with binding data to the Grid View, then build up functionality from there.
The Grid View 'Grid View1' fired event Row Deleting which wasn't handled. When I say manually databinding I mean not using a data source control specified as a Data Source ID, but rather setting the Grid View’s Data Source equal to the appropriate data object and calling Data Bind. NET 2.0 are familiar with how to deal with this, but since ASP.