How to add a row from DataTable to GridBoundGrid?

[David Bosak]

Hi,
How to add a row from DataTable to GridBoundGrid at a time?

Thanks,
D.B

[Administrator]

I am not sure I understand your question.

The GridDataBoundGrid just displays exactly what is in the datasource that you set to it.

So, if you have a DataTable with 15 rows, and your make this DataTable the DataSource for the grid, then the grid will display the same 15 rows (plus possibly an AddNew row). If you then (outside of the grid) add an additional row to this DataTable, the grid should automatically display it.

So, if you want to see the grid add one row at the time, then you should add one row at the time to the DataTable that you have set as the grid''s DataSource.

If you will explain more about what you want to do, maybe I can suggest something else.

[David Bosak]

Dear Clay,
I suppose that I have 1000 rows in a datatable, I don''t want to use the command below to fill 1000 rows:
grid1.DataSource = datatable1;

At a time, I only want to read one row from datatable1, then fill this row to GridDataBoundGrid (use for()-loop).
I have to use this way because I am creating a progress bar.
Please help!
D.B

[Administrator]

This is the only way you can set data into a GridDataBoudGrid.

grid1.DataSource = datatable1;

Once you do this, you could loop 1-1000 and add a DataRow at the to datatable1. Then this would make the rows appear one at the time in the grid. But they get added to the datatable, not to the grid.

If you want to simulate adding rows to teh grid, you can handle the grid.Model.QueryRowCount event. In the event, set e.Count = this.MyRowCount;. In formLoad, set this.MyRowCount = 1 (or whatever number of rows you want to see in the grid initially.) After setting MyRowCount, make sure you call grid.Model.ResetVolatileData. Then in teh loop where you want to start showing more rows, increment MyRowCount, and call grid.Model.ResetVolatiledata.

[David Bosak]

Do you have any application sample for this?

[Administrator]

http://64.78.18.34/forums/Uploads/AddRows12092004.zip

You would probably not want to do this in a tight loop as it will lock out all other processing on your UI thread while you are looping to display a row at the time. I am not sure what your needs are, but you could have a timer raise an event every so often, and display a row at that point. Or you could use something else to avoid locking up your UI as you put the rows up. If you try to do this from some other thread, then you will need to make sure all the interaction with the grid is done on the thread that created it (using grid.InvokeRquired checks).