Haven't tried this yet, but stumbled across it today. To help prevent flickering when drawing a WinForms control (or Form for that matter):

use theForm.SetStyle( ) with ControlStyles enumeration.

interesting enumeration members:
AllPaintingInWmPaint
DoubleBuffer

Google Groups: View Thread "Repainting problem"

Came across this when using Syncfusion's Grid Control.

Their class library reference is a set of compiled help files, to be merged and viewed with VS.NET help. They ship InnovaHxReg.exe with their product to register the help files.

Google groups search shows HxReg.exe is a MS version of this tool, not sure the differences.

Wonder where this ends up writing? Somewhere in the registry I woudl guess...

Command line GACUTIL doesn't show the location of the assemblies in the GAC (is there a switch I'm not throwing?)

Instead, go to <windir>\assembly and view them there. Right click, properties on the assembly -- CodeBase shows location.

Inside VS.NET, to be in the add reference dialog box. Registry tweak...

306149 - INFO: How to Display an Assembly in the Add Reference Dialog Box

Home of Snippet Compiler, there is more interesting stuff here.
.net stuff

Use aspnet_setreg to setup encrypted sections of the config file. Use this as a way to securely store the connection string information.

They talk about the connection string used for session state, but wonder what we can do about this for storing connection string information for the user portion of the app?

329290 - HOW TO: Use the ASP.NET Utility to Encrypt Credentials and Session State Connection Strings

Discussion on the business value of .NET, return on investment (ROI), etc.

Visual Studio: Columns: The Business Value of .NET ( .NET in the Real World)

Comparison of various data access techniques: DataSet, DataReader, XmlReader, output param. All use Stored Proc.

Performance Comparison: Data Access Techniques

Random assortment of slides found on the web at places other than MSDN.

Rob Howard, from asp.net.
Useful tips & tricks, DataSets, issues running asp.net
TechEd Slides and other news

Reminder to look this over. John Lam is now teaming up with this gal to start a training company in Toronto. She must have some decent content?

Datagrid Girl!

keywords: datagrid data grid visual studio vs.net

Interesting data about microsoft.com web site.

From John Lam's blog, referrnig to his pre-con talk at TechEd 2004 about migrating to IIS 6.

iunknown.com: Hanging out with the MSCOM folks

This demo puts a dropdownlist in the cell where the data goes. I'm trying to put a DropDownList in the header row, which I've been successful at, but I can't seem to wire up the event. (well I've wired it up, but it doesn't fire....heh...)

The Code Project - DataGridDemo - ASP.NET

(updated 6/1/04 now that I'm using this for real work :)

Quick summary:
ItemCreated event looks like it's when the cells (and any controls in those cells) are created. Can add new cells, with their proper content here.

If you want access to the data that is *going to be in that cell*, wait until you get the DataBound event. Here, you have access to the DataItem property that will give you the IDataRecord (if reader-based datasource) or DataRowView (if DataSet-based datasource) object. (see below)


-------

I often try to pull this off, but can't quite figure out where each element is bound, created, etc. Haven't tried this, but found in a mag, handling the following event to add a "line number".

(updated) if want/need access to the data source text to "adjust" the cell contents of a cell coming from the data source, do this in the DataBound event below. Here, we just use the DataSetIndex property to make up a line number:

public void OnItemCreated( Object sender, DataGridItemEventArgs e )

{

	if ( i.Item.ItemType == ListItemType.Item || 

                         i.Item.ItemType == ListItemType.AlternatingItem )

	{

		eItem.Cells[1].Text = (e.Item.DataSetIndex+1).ToString();

	}

}

In another example, they actually did more work in another cell, something like this to confirm a delete button click before action:

WebControl btn = (WebControl)e.Item.Cells[0];

btn.Attributes.Add( "onclick", "return confirm( \"Delete this row?\"); " );

Saw this at The Code Project -- add a control to the collection? Use this in the ItemCreated event.

    CheckBox cb = new CheckBox();

    e.Item.Controls[i+dbTableColumnOffset].Controls.Add(cb);

    e.Item.Controls[i+dbTableColumnOffset].Controls.RemoveAt(0);

In the ItemCreated event, cast the DataItem property to what data "reader" you are using... (in this case, DataSet and it's sub parts)

cb.ID = ((DataTable)((DataView)((DataRowView)e.Item.

                              DataItem).DataView).Table).Columns[i].

                              ColumnName.ToString();

Eeesh, just spent an embarrasing amount of time trying to figure out how to look at the data from a OleDbDataReader instead of the DataSet based binding above.

    int count = ((IDataRecord)e.Item.DataItem).FieldCount;

    String s = ((IDataRecord)e.Item.DataItem).GetString(0);

    int ord = ((IDataRecord)e.Item.DataItem).GetOrdinal("machine_id");

    String dtype = ((IDataRecord)e.Item.DataItem).GetDataTypeName(7);

    ... etc ... 

Update 6/1/04 with some other code you can use in these events:
In either event, use ItemType property to determine if this row is a Header, Footer, item, etc.

if ( e.Item.ItemType == ListItemType.Item ||

	e.Item.ItemType == ListItemType.AlternatingItem )

In the ItemCreated event, use the Cells and Controls collections to access the cells and contents of items in this row.

e.Item.Cells

e.Item.Controls

Someday I'll figure out the difference between ItemCreated and DataBound events on the DataGrid.

Updated 6/1/04: Think I've (sort of) figured this out. See top of this post for updated thoughts.