Handling huge datasets on web as easy as desktop
host posted on February 26, 2008 :: 2156 Views :: User Rating:
Handling huge datasets on web could be as easy and responsive as handling them on desktop
Handling large amounts of data is always challenging. Even more so when working with AJAX since one has to work on seamlessly updating the local data cache as the user scrolls through the list. Visual WebGui’s list controls do just that. Visual WebGui unleashes the full power of lists and combos enabling them to handle enormous datasets using a simple drag & drop WinForms development paradigm.
All you have to do is drag and drop the list control (a Combo Box in this sample) to the design surface and bind it to whatever data source you desire.
With the client virtual list you can scroll through large amounts of records, rendering only the visible items on the client. The end result is a smooth scrolling, responsive list that can handle very large datasets without any performance issues. In addition the control supports auto-complete features and all of the popular WinForms control behaviors.
In this sample we’ll use a Microsoft access database, binding this database’s records to the combo box is done as follows:
private void MainForm_Load(object sender, EventArgs e)
{
BindComboBox();
}
private void BindComboBox()
{
this.mobjComboBox.Items.Clear();
mobjDatabaseData = new DatabaseData();
mobjDatabaseData.LoadCustomers();
this.mobjComboBox.DataSource = mobjDatabaseData.Tables[0];
this.mobjComboBox.DisplayMember = "CompanyName";
this.mobjComboBox.SelectedIndex = 0;
}
Find out more about this example and other unique features in the Visual WebGui community website at:
www.visualwebgui.com