Question

I am binding my data in a datatable and then bind that datatable into a datagrid. I want that some rows of the datatable should be highlighted with some color. How can we do that from code-behind?

Answer 1

You need to hook into the ItemDataBound event of the DataGrid, in order to dynamically set the properties you desire.

On your HTML, set the OnItemDataBound attribue of the DataGrid to a server-side event.

<asp:DataGrid id="ItemsGrid" runat="server"
           ...
           OnItemDataBound="Item_Bound">

Then wire-up the server-side event handler:

void Item_Bound(Object sender, DataGridItemEventArgs e) 
{
  // some code to handle each bound item
}

You could then flip the colors based on the ListItemType enumeration:

if(e.Item.ItemType == ListItemType.Item)
   e.Item.BackColor = Color.Red;
else if (e.Item.ItemType == ListItemType.AlternatingItem)
   e.Item.BackColor = Color.Blue