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Rowupdating in c

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.

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.

NET 2.0 most of the examples and tutorials deal with setting the Data Source ID, which buys you a lot of automation that you may not even appreciate unless you’ve done this the old fashioned way.

rowupdating in c-4rowupdating in c-48

The Grid View Row is the naming container for the Text Box in this case, so we need to call Find Control on the appropriate row, but we do not need to call it on the specific cell.Since it’s a Bound Field, the Text Box is going to be Control[0].Once we have a reference to the Text Box, we set the new first name.The important point is not which of these two events call Bind Data, but one of them must or the Grid View will not be updated. When bound using a Data Source ID, the Grid View internally tracks the current Sort Expression and Sort Direction, and those are available through properties with the same names.When you manually bind the Grid View, this tracking does not occur, so we must implement some mechanism for tracking those values.At that point we need to get the new values so we can update the record, which is done slightly differently for the Bound Field and the Template Field.For the Bound Field, we don’t know the ID of the Text Box since it’s autogenerated by the Bound Field, so we obtain a reference to it by getting the first control in the appropriate cell in the edited row.We’re using Linq to SQL to pull data from our database and bind it to the Grid View.We’ll revisit this method when we implement the sorting functionality.We’re sorting on the appropriate field based on the Sort Expression, and setting the direction based on Sort Direction by calling either the Order By or Order By Descending methods. As with paging, we also reset the Edit Index and Selected Index when sorting.Finally we need to populate the Sort Expression and Sort Direction when they change, and we’ll handle that in the Sorting event. Also like paging, so show that it does get called, databinding is handled in the Sorted Event ( First, we obtain the User ID of the affected row from the Grid View Data Keys collection, which we use to pull the appropriate record from the database.

482 comments

  1. Hi, In my 3.5 C# web application, in the GridView RowUpdating, I would like to find the value of TextBox. However, instead of giving me the value I.

  2. Hi! In the following code snippet, I am trying to SELECT/EDIT/UPDATE/CANCEL/DELETE GridView row. But I am not able to UPDATE, please help! Code snippet.

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