24 items found in the ADO.NET Category

Bind Data From a SqlDataSource to a Label

25 August 2007 10:32

ASP.NET 2.0 ADO.NET ASP.NET Web Forms

Label controls in ASP.NET don't have a smart tag that allows you to select a data source, so at first glance, it is not easy to see how to bind a value returned from a SqlDataSource or AccessDataSource control to the label. Here's how to programmatically access the data returned by such a DataSource and apply it to a non-databound control.

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Viewed 228051 times

32 Comments for this item

Exporting data to a CSV, tab delimited or other text format

02 August 2007 23:41

ASP.NET 2.0 ADO.NET

A question that often comes up in forums is how to export data to a CSV file, or other text format. Here's a method that takes data from a DataReader and writes it to a file.

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Viewed 55074 times

4 Comments for this item

Displaying One-To-Many Relationships with Nested Repeaters

27 July 2007 14:24

ASP.NET 2.0 ADO.NET ASP.NET Web Forms

This item could also have been entitled "Displaying Master-Detail Data" or "Displaying Categorised Data", but the principal is the same: you have what are essentially headings or categories, and a group of entries that belong to each heading that you want to display. Typical examples would include the Models of cars by Manufacturer, or Employees by Department. Here's how to do it quite simply using nested Repeaters.

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Viewed 55067 times

4 Comments for this item

Getting the identity of the most recently added record

05 June 2007 22:13

SQL SQL Server Express MS Access ADO.NET

The built-in functions @@Identity and Scope_Identity() are designed to retrieve the most recently added record's autoincrement identity value from Access and Sql Server respectively. Here are some usage examples.

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Viewed 410871 times

46 Comments for this item

Programmatically accessing data from DataSource controls

16 May 2007 10:06

C# ASP.NET 2.0 ADO.NET

For the main part, the DataSource controls are incredibly easy to work with. You just drag them onto your page in Design View, wire them up to a connection and provide some kind of command (ad hoc sql query or the name of a stored procedure - saved query in Access), then link them to a databound control on the page using its DataSource property. Then you run the page and all your data appears. But what if you want to get at one or more values from the returned data to do something else with it, like display it in a control that doesn't expose a DataSource property?

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Viewed 114908 times

8 Comments for this item

Binding data to a DropDownList with ADO.NET

11 May 2007 22:35

ASP.NET 2.0 MS Access ADO.NET

Using ADO.NET to pull data from the Northwind database (Access version), using the saved query Current Product List.

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Viewed 15227 times

0 Comments for this item

Parameter Queries in ASP.NET with MS Access

13 April 2007 22:17

ASP.NET 2.0 MS Access ADO.NET

A selection of code samples for executing queries against MS Access using parameters.

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Viewed 207975 times

48 Comments for this item

Iterating through CheckBoxList To Insert Records

03 April 2007 20:52

ASP.NET 2.0 ADO.NET

Having inserted a record, you want to retrieve the newly created record's ID number, then iterate over a collection of items, such as a CheckBoxList to insert additional information relating to the record.

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Viewed 10047 times

0 Comments for this item

Insert Single Value With Stored Procedure ASP.NET C#

03 April 2007 14:16

ASP.NET 2.0 SQL ADO.NET

Code for calling stored procedure in the Code-Behind to insert a single value from a text box.

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Viewed 41592 times

3 Comments for this item

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