public void loaddata(string search)
{
dbconnect db = new dbconnect();
db.data_adapter(search, db.con);
DataSet ds = new DataSet();
db.da.Fill(ds);
dataGridView1.DataSource = ds.Tables[0];
db.dbclose();
foreach (DataGridViewColumn column in dataGridView1.Columns)
{
column.SortMode = DataGridViewColumnSortMode.NotSortable;
}
}