Hi,
You may try this,
GridView1.DataSource = ListBox1.DataSource
;
or use this,
GridView1.DataSource = getDataSource(ListBox1.Items);
private DataTable getDataSource(ListItemCollection listItemCollection)
{
DataTable dtTemp = new DataTable();
dtTemp.Columns.Add("MyItems");
foreach (ListItem item in listItemCollection)
{
DataRow drTemp = dtTemp.NewRow();
drTemp["MyItems"] = item.Text;
dtTemp.Rows.Add(drTemp);
}
return dtTemp;
}