ASP.NET

Tip: Changing Validator text color using class name

Sreenivas Mogullapalli — Thu, 30 Oct 2008 11:33:46 GMT

In my ASP.NET application validators are used for validating the data entry part and as per the requirement we need to show a different color for error messages. We have created a CSS class for all the error message and applied to validators but noticed that the error messages are always displayed in RED color. The trick here is we also need to set the ForeColor to empty to get the color of text from CSS Class. Sample is provided below.

CssName="Someclass" ForeColor=""

Free e-book on Microsoft LINQ, Microsoft ASP.NET AJAX, and Microsoft Silverlight

Sreenivas Mogullapalli — Wed, 19 Dec 2007 11:55:02 GMT

This offer is from Microsoft. Get it at http://www.microsoft.com/learning/vstudio/2008/default.mspx#EBOOK

The free e-book includes content from three recent publications from Microsoft Press:

•	Introducing Microsoft LINQ by Paolo Pialorsi and Marco Russo (ISBN: 9780735623910) This practical guide covers Language Integrated Query (LINQ) syntax fundamentals, LINQ to ADO.NET, and LINQ to XML. The e-book includes the entire contents of this printed book!
•	Introducing Microsoft ASP.NET AJAX by Dino Esposito (ISBN: 9780735624139) Learn about the February 2007 release of ASP.NET AJAX Extensions 1.0, including an overview and the control toolkit.
•	Introducing Microsoft Silverlight 1.0 by Laurence Moroney (ISBN: 9780735625396) Learn how to use Silverlight to simplify the way you implement compelling user experiences for the Web. Discover how to support an object-oriented program model with JavaScript.

Dynamic Data screencast by David Ebbo

Sreenivas Mogullapalli — Fri, 14 Dec 2007 09:38:17 GMT

David Ebbo made a screencast which walks through a basic scenario of using ASP.NET Dynamic Data in a simple site using Northwind. You can download this screencast from on his blog at http://blogs.msdn.com/davidebb/archive/2007/12/12/dynamic-data-screencast-is-now-available.aspx

Microsoft ASP.NET 3.5 Extensions

Sreenivas Mogullapalli — Mon, 10 Dec 2007 08:57:59 GMT

A preview of ASP.NET 3.5 Extensions is released by Microsoft. You can download this from http://www.microsoft.com/downloads/details.aspx?FamilyId=A9C6BC06-B894-4B11-8300-35BD2F8FC908&displaylang=en

The following are part of this release.

ASP.NET MVC

ASP.NET MVC provides model-view-controller (MVC) support to the existing ASP.NET 3.5 runtime, which enables developers to more easily take advantage of this design pattern. Benefits include the ability to achieve and maintain a clear separation of concerns, as well as facilitate test driven development (TDD).

The ASP.NET MVC Toolkit provides HTML rendering helpers and dynamic data support for MVC.

ASP.NET Dynamic Data

ASP.NET Dynamic Data helps developers build a fully customizable, data-driven app quickly. It provides a rich scaffolding framework that allows rapid data driven development without writing code, yet it is easily extendible using the traditional ASP.NET programming model.

ASP.NET AJAX

New additions to ASP.NET AJAX include support for managing browser history (Back button support).

ADO.NET Entity Framework

ADO.NET Entity Framework is a new modeling framework that enables developers to define a conceptual model of a database schema that closely aligns to a real world view of the information. Benefits include easier to understand and easier to maintain application code that is shielded from underlying database schema changes.

ADO.NET Data Services

ADO.NET Data Services provide new services that find, manipulate and deliver data over the web using simple URIs. Benefits include an easy and flexible way to access data over the web, while enabling the separation of presentation and data access code.

Silverlight Controls for ASP.NET

You can integrate the rich behavior of Microsoft Silverlight into your Web application by using two new ASP.NET server controls: a MediaPlayer server control that enables easy integration of media sources such as audio (WMA) and video (WMV) into your Web application, and a Silverlight server control that allows an ASP.NET page to reference both XAML objects and their event handlers.

Design Patterns for ASP.NET Developers

Sreenivas Mogullapalli — Fri, 06 Apr 2007 07:06:00 GMT

DevX published a series of three articles that explore the built-in support for standard design patterns in ASP.NET

Design Patterns for ASP.NET Developers, Part 1: Basic Patterns

Design Patterns for ASP.NET Developers, Part 2: Custom Controller Patterns

Design Patterns for ASP.NET Developers, Part 3: Advanced Patterns

ASP.NET “Atlas” June CTP

Sreenivas Mogullapalli — Thu, 06 Jul 2006 08:34:00 GMT

Latest CTP of “Atlas” is available at ASP.NET “Atlas” June CTP. This introduced a new concept called Dynamic UpdatePanels which can be used in ItemTemplates or User controls. Looks interesting.

Working with Data in ASP.NET 2.0

Sreeni M — Fri, 23 Jun 2006 04:34:00 GMT

I may be late to look at these articles but better late than never. ASP.NET site has a nice list of tutorials on working with ADO.NET in ASP.NET 2.0. The list is

Introduction

Basic Reporting

Master/Detail

Custom Formatting

showing gridview header row when no data

Sreenivas Mogullapalli — Fri, 16 Jun 2006 02:42:00 GMT

I have used gridviews in my asp.net 2.0 applications. One of the requirement is to show the header row even when there are no data rows in dataset. I couldn't find an easy way of doing this. After little bit of R&D, i did that with EmptyDataTemplate of GridView. This works well but is there any easy way of doing this?

EDIT on 15-Nov-2007:
Following is the sample code of what i did in my application. In this i wanted to show two fields Year and extract date. BTW, this sample is not specific to VB or C# as this code belongs to aspx page.

code:
                <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1"
                    Width="75%" BorderColor="Black" BorderStyle="Solid" OnRowDataBound="GridView1_RowDataBound" OnDataBound="GridView1_DataBound" AllowPaging="True">
                    <Columns>
                        <asp:BoundField DataField="YEAR" HeaderText="Year" >
                            <HeaderStyle Font-Underline="True" />
                        </asp:BoundField>
                        <asp:BoundField DataField="EXTRACT_DATE" HeaderText="Last Extract" >
                            <HeaderStyle Font-Underline="True" />
                        </asp:BoundField>
                    </Columns>
                    <EmptyDataTemplate>
                        <table width="100%">
                            <tr style="font-weight:bold; text-decoration:underline" align="center">
                                <td>
                                    Year
                                </td>
                                <td>
                                    Last Extract
                                </td>
                            </tr>
                        </table>
                         <br />
                        No Records Found for Review
                    </EmptyDataTemplate>
                </asp:GridView>

deployment tag in web.config

Sreeni M — Thu, 15 Jun 2006 01:14:00 GMT

Azam bloged about deployment tag of ASP.NET 2's web.config. It is a nice way to turn off all things that can be ignored by the developers while developing pages.

For reference: Including “” in web.config will disable tracing and debugging.