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Syncfusion Feedback

HighLight Cell on changed Value for a second.

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38323 Dec 9,2005 05:18 PM UTC Dec 12,2005 10:20 AM UTC WinForms 3
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Tags: GridControl
e.davidse
Asked On December 9, 2005 05:18 PM UTC

How can I highlight a cell in the GDBG for a second. It don''t seems to work to call RaisePrepareViewStyleInfo with a new GridStyleInfo object with the correct value and color. This is done from a timer. We realy need this functionality. Any Idea Regards Erwin Davidse

Administrator [Syncfusion]
Replied On December 9, 2005 05:30 PM UTC

Yes. I think you would have ot use a timer. Here is a try at this. http://www.syncfusion.com/Support/user/uploads/GDBC_Second_23f37646.zip

e.davidse
Replied On December 12, 2005 07:46 AM UTC

The timer I had already working. the problem is that the change is NOT comming from user input but directly from the datasource. We are using the grid only for visualisation. I can''t upload code to you easly so This is what I want to try: private Timer _timer = new Timer(); private void Form1_Load(object sender, System.EventArgs e) { ... _timer.Interval = 100; _timer.Tick +=new EventHandler(_timer_Tick); } private void _timer_Tick( object sender, EventArgs e ) { Random rand = new Random(); int rowIndex = rand.Next( 0, ((DataTable)this.gridDataBoundGrid1.DataSource).Rows.Count ); DataRow row = ((DataTable)this.gridDataBoundGrid1.DataSource).Rows[ rowIndex ]; row["Col1"] = "Change"; } The problem is that I now don''t know which cell is changed. And update the entire grid is not an option. there are just to much changes. We are facing +200 cell changes a second. +/- 40 visable row with 15 cols. And we would like to use the databound grid because the support for sorting and filtering. Is this reasonable to do with the databound grid or do we need to implement it all ourself. ( timeconsuming ) >Yes. I think you would have ot use a timer. Here is a try at this. > >http://www.syncfusion.com/Support/user/uploads/GDBC_Second_23f37646.zip >

Administrator [Syncfusion]
Replied On December 12, 2005 10:20 AM UTC

You have to listen to an event on the datasource that catches these outside changes to the datasource. In this event handler, you add the changed items along with a timestamp to some datastore. Then from within a timer loop in your form, you check this datastore to see whether items shown be removed and and refresh the grid for each of these items so PrepareViewStyleInfo can properly set the colors. Here is a little sample. http://www.syncfusion.com/Support/user/uploads/GDBC_Second_70d51930.zip

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