GridView on Justin Carmony

ASP .NET, LINQ, GridViews, and GUID Errors

Mon, 25 Feb 2008 20:17:22 +0000

I found a simple problem today. Here is the deal, there were several times where I had to base a LinqDataSource off a Guid that I would set in the Page_Load(). I created an<asp:HiddenField /> to hold the value so all my DataSources could pull it from the control. The HiddenField control’s value is stored as a string, so I would have to convert the guid to a string. After doing this, I was getting the following error:

ASP .NET, GridViews, SqlDataSource, and Guid Parameters

Thu, 31 Jan 2008 21:40:27 +0000

Another thing I ran into today. I actually ran into it awhile back but since I ran into it again today I’d thought I’d post on it to help anyone who happens to find it.

Problem

You have a GridView and a SqlDataSource that takes 1 or more Guids as a Parameter. You use the built in DataSource configuration and it doesn’t give any errors. However, when you actually run it and pass the Guid, you get this error:

ASP .NET GridView Access to Data In Code

Tue, 22 Jan 2008 16:52:38 +0000

There are situations where you want to gain access to the GridView’s DataSet to display extra information outside of the GridView. I found the following code to work the best for me. You can get the information from the DataSource of a GridView by doing the following:

DataView dv = (DataView)sdsDataSource.Select(DataSourceSelectArguments.Empty); if (dv != null) { try { strName = (String)dv.Table.Rows[0][“Name”]; } catch { strName = “N/A”; } }

You should be able to access whatever information you need from the DataView.

ASP .NET 2.0, GridViews, HyperLinkField, and JavaScript

Tue, 08 Jan 2008 04:34:00 +0000

I’ve found some interesting notes on ASP .NET’s GridView, it’s limitations and work arounds. For work I was looking for a way to execute JavaScript from clicking a link on a GridView Cell. An example would be to having a list of transactions and wanting to click a link to update it’s details. I noticed that many functions of GridView used tags to execute JavaScript. An example would be:

<a href="javascript:myFunction('variable');">Link</a>

Since I had experience with the HyperLinkField before, I thought I would add a HyperLinkField to my GridView and set the DataNavigateUrlFields to the needed fields and the DataNavigateUrlFormatString to use the fields properly. I was hoping to accomplish it by using the following code, which in turn I found out this solution does not work: