How to rename all the file extensions in a folder

Open a command/cmd window
navigate to the folder
type the following command
rename *.originalextension *.newextension
Example: To cange all jpg file extensions to gif extensions. You can use the following command.
rename *.jpg *.gif
Modify the values originalextension and newextension as required.
You can save this command in a batch file and execute in the respective folders.

ASP.NET usefull links in development

Developing WebBrowser using C#.Net or working with WebBrowser control in .Net
http://www.devx.com/codemag/Article/20145/0/page/4
http://www.dotnetcurry.com/ShowArticle.aspx?ID=49&AspxAutoDetectCookieSupport=1

SQL Server 2008 Service Pack 1 Released

You can download SQL Server 2008 SP1 from the following location.
http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=66ab3dbb-bf3e-4f46-9559-ccc6a4f9dc19

Asp.Net Errors and Resolution

1. Sys.WebForms.PageRequestManagerServerErrorException: Exception has been thrown by the target of an invocation.
When used updatePanel and fileupload controls a client side message displays as above.

To resolve this issue follow the following instructions. orginal link
http://forums.asp.net/p/1100270/2468298.aspx#2468298


<triggers>
<asp:postbacktrigger controlid="fileUpload1">
</triggers>
This works perfect whenever the FileUpload control is a child control of the UpdatePanel's ContentTemplate.However when the FileUpload control is a child control of e.g. a DetailsViews, which is a child control of the UpdatePanel's ContentTemplate, we should not postback the FileUpload control but it's container.
So in this case you would have to postback the DetailsView by using it's ID.

<triggers>
<asp:postbacktrigger controlid="detailsView1" />
</triggers>


How to Send email from ASP.NET

In the web.config file add the following configuration

<system.net>
<mailSettings>
<smtp from="yourmailid@domain.com">
<network host="localhost" port="25" />
</smtp>
</mailSettings>
</system.net>

In the ASP.NET code

try
{
System.Net.Mail.SmtpClient Client = new System.Net.Mail.SmtpClient();
Client.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.PickupDirectoryFromIis;
Client.Send("Frommailid@domin.com", "tomailid@domain.com", "Mail Sumbjet", "Mail Body");
}
catch (Exception ex)
{
Response.Wrire(ex.Message.ToString());
}