tags:

views:

281

answers:

3
+2  Q: 

How can I refresh only the visible rows of a data bound DataGridView?

I have a DataGridView bound to a list of custom objects created on the fly. This list is not very large, 5000 items maximum. However, the values of the custom objects change every 50ms and the grid hangs the application while refreshing the values and it ultimately crashes.

My question is: is there a way to "virtualize" the data binding of the DataGridView so that only the rows that are actually seen on the screen are refreshed?

EDIT: I found out why my DataGridView was so slow and it had nothing to do with data binding. So this question is no longer relevant. As a side note, I think the DataGridView already refreshes only the visible rows when a ListChanged event occurs.

A: 

I think you will want to look into using the DataGridView in virtual mode.

Fredrik Mörk  2009-08-10 09:38:17
+1  A: 

A good article on Virtual mode (DataGridView). - http://www.codeproject.com/KB/books/PresentDataDataGridView.aspx#7

adatapost  2009-08-10 09:43:45
If I use this method, do I have to throw away databinding?
Julien Poulin  2009-08-10 12:43:06
A: 

What is stopping you just pulling the visible sub-set of items instead of the full 5000?

philwilks  2009-08-10 09:55:55
I am not pulling any data, the objects in the list are part of the functionality of the application.
Julien Poulin  2009-08-10 12:13:06

related questions

Displaying Flash content in a C# WinForms application
How to get the value of built, encoded ViewState?
Unhandled Exception Handler in .NET 1.1
How do I connect to a database and loop over a recordset in C#?
How do I most elegantly express left join with aggregate SQL as LINQ query
Get a new object instance from a Type in C#
.NET Testing Framework Advice
Automatically update version number
What is the difference between an int and an Integer in Java/C#?
How to write to Web.Config in Medium Trust ?
WinForms ComboBox data binding gotcha
How do you sort a C# dictionary by value?
Adding Scripting functionality to .NET applications
Floating Point Number parsing: Is there a Catch All algorithm?
How do I print an HTML document from a web service?
Decoding T-SQL CAST in C#/VB.net
Anatomy of a "Memory Leak"
How do I get a distinct, ordered list of names from a DataTable using Linq
Reliable Timer in a Console Application
How do I fill a DataSet or a DataTable from a LINQ query resultset ?
What's the difference between Math.Floor() and Math.Truncate() in .NET?
How do I calculate relative time?
How do I calculate someone's age in C#?
Are there any conversion tools for porting Visual J# code to C#?
When setting a form's opacity should I use a decimal or double?