Stephen Lacy » ASP.Net Webforms

Default Button in asp.net forms

admin — Mon, 17 May 2010 12:47:00 +0000

Taken from http://www.metabuilders.com/Tools/DefaultButtons.aspx

Often in asp.net WebForms you have multiple buttons with a number of textboxes and other form controls making it difficult for the web browser to determine what should happen when a user clicks enter.

Thankfully in asp.net 2 the panel and form controls have a default button property making it so that the enter key for all form controls contained within the panel or form control triggers the default button specified.

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Updating Redirection using Strong Types to .Net 4

admin — Sat, 17 Apr 2010 19:40:22 +0000

I wrote previously how to handle redirecting to other pages in an asp.net Web Forms application using the page’s type which allows you to move pages around in your site without having to worry about dead links as long as you use some sort of refactoring tool like resharper from jetbrains. Here is a link to the original post: http://www.lacy.ie/redirecting-using-strong-types-in-an-asp-net-web-application-project

In .Net 4 you are now able to have functions with optional parameters and name parameters in function calls, see http://weblogs.asp.net/paulomorgado/archive/2010/04/16/c-4-0-named-and-optional-arguments.aspx for more details on that.

So what this means for Redirecting using Strong Type is that where before you couldn’t specify which parameter you were referring to if two of the optional parameters were integers, now you can make both parameters optional and in your calls name the parameter you want to pass.

So what you would have had before is

public static void Redirect(int age, object randomParamToDistuinguish)
{

HttpContext.Current.Response.Redirect(GetUrl(id,null);

}

public static void Redirect(int groupId)
{

HttpContext.Current.Response.Redirect(GetUrl(id,null);

}

UserList.Redirect(1,null);

OR

UserDetails.Redirect(1);

Now you have

public static void Redirect(int age = -1, int groupId = -1)
{

HttpContext.Current.Response.Redirect(GetUrl(age,groupId);

}

UserList.Redirect(age: 17, groupId: 4)

OR

UserList.Redirect(age: 9);

OR

UserList.Redirect(groupId: 14);

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Updating designer.cs in an ASP.Net Web Application

admin — Tue, 13 Apr 2010 16:40:00 +0000

If the controls on your designer.cs are out of sync with your aspx page you may want to try the following to resync them.

Put your page in design view and right click / refresh. It will sync the controls with the designer.cs. Make sure designer.cs is close before doing this.

Taken from the following link: http://forums.asp.net/t/1233688.aspx

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Reducing the size of your ViewState in asp.net web forms

admin — Mon, 22 Feb 2010 16:13:31 +0000

Very useful article on how to reduce your ViewState size. Also very simple to implement.

http://szokelizer.blogsome.com/2006/11/09/how-to-put-controlstate-into-viewstate-and-how-to-put-viewstate-into-session/

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Using RegularExpressionValidator to validate the length of a String

admin — Mon, 15 Feb 2010 10:48:23 +0000

This post I’ll keep short and sweet.

If you are using a Regular Expression Validator you will have the problem that if you use a line break it won’t validate when you write something like ^.{0,n}$ ~~even though the dot is supposed to match anything~~

Apparently the dot isn’t supposed to match new line characters

I took the following from http://weblogs.asp.net/cosgood/archive/2003/05/06/6604.aspx although the wrong bracket is used to close off the cardinality

^(.|\s){0,n}$

That’s it, just remember to escape the backslash depending on where you are setting the expression.

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JqGrid.Net Public Beta

admin — Wed, 16 Sep 2009 14:04:56 +0000

Just started using the ASP.Net Web Forms wrapper for JqGrid, worth taking a look at

http://trirand.net/default.aspx

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Official JqGrid ASP.Net Web Forms Control Alpha Demo

admin — Thu, 10 Sep 2009 16:25:43 +0000

First look at the official JqGrid ASP.Net Web Forms control here http://www.trirand.net/jqgrid.aspx

Includes support for Linq and object data sources.

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