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The ASP Column: Determining Browser Capabilities in ASP.NET

Posted By:      Posted Date: August 21, 2010    Points: 0   Category :ASP.Net

Web applications are different from applications that run in homogenous environments because they send their output to all kinds of platforms and Web browsers. Some browsers support client-side scripting, some support XHTML, and still others have limited screen real estate.

George Shepherd

MSDN Magazine January 2005

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Browser Capabilities

The default .browser files are very limited. There are some popular 3rd party updates such as http://owenbrady.net/browsercaps/ available. But I was wondering if MSFT has a supported method of providing updates browser files. Specifically, it is critical to my application that Request.Browser.Crawler be accurately populated.

Programmatically Mapping Custom SharePoint Column on Non-browser Enabled InfoPath Form


I have an InfoPath form, which, due to control requirements, is not browser enabled. It is being programmatically added as a content type to SharePoint (MOSS 2007). All users have Office 2007 installed so they will be able to open the form. I also have a custom multi-line column in the SharePoint document library. I can manually publish the form and map the column to a field of the form, but I need to be able to do this programmatically.

We are currently deploying the forms by modifying the publish url in the xsf during install. We have tried to modify the site coulmn GUID in the template xsf during install without success.

Does anyone have any ideas as to how we can programmatically promote the InfoPath field so it is visible in SharePoint?

Tooltip for GridView Column Headers (ASP.Net)

I just wanted to add auto tooltips for my GridView headers. There are couple of ways but I don't want to use javascript and wanted to use simple 'title' attribute. It took couple of hours to get the working code supporting sortable columns. I thought it will be very useful for others. Here's the code and logic behind it.

Multiple Column Dropdownlist for the ASP.NET DataGrid

Based on my previous control "Multiple Column DropDownList for ASP.NET", I received many emails asking for the same control to be used in the DataGrid for web applications. Here we go.. This control can be used as the regular MS DropDownList in the DataGrid and also as a regular dropdownlist. It has all the properties, like DataTextField, DataValueField, DataSource, SelectedIndex etc. The download file contains the samples both in VB.NET and C#. In this sample, I have used the Northwind database of SQL Server.

How to setup a Mobile Browser Emulator in Windows Mobile 6:

In the following tutorial, I cover the process of Setting up Windows Mobile 6 for Mobile Browser Emulation using the Microsoft Device Emulator. This enables a user to experience Windows Mobile 6 on a PC via Emulation without even owning a Windows Mobile 6 product. It can be a great way to test drive Windows Mobile 6 before purchasing a product with it installed. In our case, it allowed us to Emulate Windows Mobile Browsing so that we could optimize our sites for the Mobile viewing audience. Installation and Emulation is simple and fairly straight forward.

Alternating row background for first column of a report


is there a way to make the first column of a report use the an alternating background color? 

I have the background color set for the entire row however it does not work for the first column if the color is set to an expression.  If I just set it to a color i.e. red it works just fine. If I insert a dummy column to the left it works just fine (but the dummy column does not work, presumably because it is first??).

In the file below only the textbox for part number does not show an alternating background.  All others work correctly.

                    <Textbox Name="PartNumber">

Use a column as parameter for a sds in another column; gridview


Hola, I have a gridview which is bound to a sds which returns 7 columns and I added two columns from the GUI.  What I want is to fill up the 9th column with DDLs and these  DDLS will get their data from a different sds which is using a stored procedure with a single parameter.  I created the 9th row, used template field, made the sds for 9th row, the stored_procedure, threw a DDL in Item template and all  I need now is to pass a parameter in the first column to the sds in the 9th column.  I can code this but i'm getting tired of aspx.cs :) and would like to do it from the GUI.

*.axd script references not being rendered to browser


I'm running VS2010 with .net 4.0, and am running into issues with the .net ajax script tags mysteriously not being rendered to the browser.

So far I've reduced it to a scenario where I set the DataSourceID property of a databound control.  More specifically, I've only tested it on a Gridview and a DropDownList.

This can be reproduced fairly easily on my machine by following these steps:

1. Create a new empty Web Application Project

2. Create a new Web Form

3. Add a ScriptManager inside the form

4. Add a DropDownList and a DataSource (I used an ObjectDataSource)

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6. Open the page in a browser and watch as you get a javascript error stating "Sys is not defined" and notice that the page source contains no script tags referencing *.axd scripts.

Here's my source code showing my set up:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="ScriptResourceFAIL.Default" %>


Pass a grid column value to a Modal


Hi, I have a requirement to hide a field called details on a gridview and show it in a jQuery modal dialog when users click on the Customer ID hyperlink. This grid is created programmatically. I will be hiding the details column via the CSS display:none property. Does some one know how can I pass the grid's selected hidden column value to the modal? Here is some of the code I started:

            GridView mygrid = new GridView();
            //.....................................More columns code for the grid

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WebDev.WebServer.exe has encounted a problem and needs to close when trying to view page in browser


Hi, whenever I load an aspx page in vwde2008, I get the message in the subject of this post.  After I click Ok on that, I get a dialog box, Unable to Connect to the ASP.Net development center.  What can I do to troubleshoot?

I am using Windows XP SP3, vwde2008 with SP1, on a HP desktop.  Also using Office 2003 if that is relevant at all.

Thanks, Justin

Bug: Does not change column type from nvarchar to ntext


Scenario: If you create a table with a column of type nvarchar, populate it with some content and try to modify it using the WebMatrix editor, from nvarchar to ntext, it does not display any error message or warning that this is not possible. It silently saves and reverts the change, back to nvarchar. Wasted some hours on this issue as I thought my column was ntext, but in fact was still nvarchar.

Expected behavior: It should change to ntext, or if SQL CE doesn't support that, it should notify the user that no change was applied.

Display column from child table. Possible ?



I'am using dnamic entity with EF4. On a list page of a table, I would like to display a column containing information from a child table of the current element. Sample :

Order List :

Order Data | Required Date | Shipped Date | etc... | ... | Customer Name (foreign key with tostring() method override) | Customer Postal Code (Column that I want to add) |

I don't known how to do that. Is it possible ? Maybe I have to to create my own Metadata proxy that will add dynamicly a column on the MetaColumn list of the table.

Does someone have an easier or better idea ?

Thank you for any help.

Rendering data with HTML tags in the DD Gridview for a selected column


I am having trouble finding out where and how to HTML Encode a cell's data on the Dynamic Data (v4.0) gridview of List.aspx.  As a simple case, suppose I have formatted cell data that is A<br/>B in the DB.    Obviously, I want A stacked on B in the cell.

It seems gridView1.HtmlEncode = true has gone away.

So maybe I'll try to catch it on the RowDataBound event:

protected void GridView1_RowDataBound(Object sender, GridViewRowEventArgs e)

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but this event never fires?

Has anyone figured out how to properly render HTML tags data in the List.aspx's GridView1? 

If I figure this out, then I can add a MetaAttribute called something like [EncodeAsHtml(true)] and be on my way.  Thanks!

browser gives jibberish when State manager (sql) is turned on


Hi all, we're testing our web app with a state manager so that we can do distributed rollouts. We're not getting any errors, but we are getting jibberish returned for every page request. 

(it won't even let me paste it in here)

HOw do I get it to serve the pages normally?


Filter by Computed Column



After looking for a driver to open legacy dbf drivers to connect, the next level trouble a have is this one:

first, i can retrieve the data but when trying to filter by a parameter (somesc columns) i get an error.

The error says about the database can't determine some blah blah!

The error is a columm tha is formated (  1234  ) about  8 space, fixed. The values in the query appears like that. I resolve this by Trimming Ltrim(ColumnName) and i get this (1234).

Now in SqlExpress, how can i filter by the new Trimmed Expression? (This is a primary key that the DBF use)


SELECT column1, column2, column3


SELECT Ltrim(column1) as NewExp, column2, column3
Where NewExpre = @NewExpres                  -Error-


Unique text value in databse column


Hi Everyone!

I know this is probably a very basic question but how do I keep a column's text values unique in SQL server (ie for a unique username)?  The column is not an integer it's varchar(50), and it's not the primary key but I could make it the primary key if recommended.

The front end could handle it;  where the user would enter text, it's validated, then a query is done to see if that username is available.  If so, then user can decide to choose it and an insert is done, if not they pick a new username and process repeats.  With this approach, the responsibility of keeping the value unique solely rests on the front end, nothing on the database side.

Is this the correct way to handle this? 

Thank you!


DAL Dataset showing all the column


I follow the tutorial and create DAL with Dataset. I created a Table Adapter with many column, but when i Call a simple Get for 2 column only. The system display 2 column and the rest column with empty data.

My question is that will this affect the performance? because i only need 2 column.

example: Table with 40 column define in Dataset in DAL. I have GetMember from Dataset with 40 column, some request only 1 column (with 39 empty), some request 22 column (with 18 empty column). Will this affact the performance?

Should i create a seperate DatasetAllColumn, Dataset1Column, Dataset22Column ?? so system only return exact column i need. and hofully the performance is optimized to it best.

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