Delete Row from Grid

Hi,

Pls find the attached image.

I have 2 dropdowns (NewsSector, NewsSectorType). when i select values from these 2 dropdowns and click on Add button, it will add rows to grid.
For each row I have Delete icon(img button), when user click on this button i have to delete row from grid(not from database).
Pls note that on click of this delete button, data should not be deleted from db. only from the grid?

how to do this?

pls find the code below:

protected void RadGridNewsSectorType_ItemCommand(object sender, GridCommandEventArgs e)
        {
            if (e.CommandName == "Delete")
            {
                //pls help me to write code here
            }
        }
grid.jpg