These controls allow page developers to declaratively access and modify data without writing any code to perform the data access. ) In Part 2 of this article series we looked at how to access relational database data using the Access Data Source and Sql Data Source controls.This article is one in a series of articles on ASP. However, in Part 2 we only looked at how to retrieve all of the records from a table, view, stored procedure, or ad-hoc SQL query.The Sql Data Source and Access Data Source controls can define the value by which the query is filtered by using parameters, and these parameters can retrieve their values from a variety of sources, including: the querystring, session variables, other Web controls on the page, and so on.Like the connection string and query, the filter parameters values for a data source control can be set declaratively, meaning you do not need to write a line of code.I would have thought that if your data was bound to the Combo Box then the control should update automatically. " Videos: VB | C# VBForums Database Development FAQ My Code Bank Submissions: VB | C# My Blog: Data Among Multiple Forms (3 parts) Beginner Tutorials: VB | C# | SQLwondering if it was a schema change (wanted to be sure) - and same thing - on the opening round, the selected value of my combobox (what i'm tracking on) - is the old value on form load - exit the app, go back in, and the selected value is what it's supposed to be.....If it's not then you can call the Reset Bindings method of the associated Binding Source. oh and this is a sqlexpress 2005 mdf that has the table with the data in it if that makes any difference...
In English, it returns all products that cost strictly less than fifteen bucks.
For more information, see Merging Data Set Contents and Handling Data Adapter Events.
The following examples demonstrate how to perform updates to modified rows by explicitly setting the Private Sub Adapter Update(By Val connection String As String) Using connection As Sql Connection = New Sql Connection( _ connection String) Dim adapter As Sql Data Adapter = New Sql Data Adapter( _ "SELECT Category ID, Category Name FROM dbo. Update Command = New Sql Command( _ "UPDATE Categories SET Category Name = @Category Name " & _ "WHERE Category ID = @Category ID", connection) adapter.
on form load, i issue update commands to the backend database that holds the table which populates the dataset - they work.
if i look at the update to the combobox, they are not reflected until i exit and restart the app - then they're fine.