Entend DataGridView Filter from Column to Column

Hi everyone,

I'm trying to extend a dataGridView Filter from column Name to column Surname using a single texBox, I have managed to filter the Name column using the following code.

 

private void txtNameSearch_TextChanged(object sender, EventArgs e)
        {
            try
            {
                this.sTUNDENTINFOTableAdapter.FillByName(this.mDIDataSet1.STUNDENTINFO, txtNameSearch.Text);
            }
            catch (System.Exception ex)
            {
                System.Windows.Forms.MessageBox.Show(ex.Message);
            }
        }

This is working fine. But I want to make it in such a way that when a user types a name followed by a space, the next letter or word he types should be filtered from the SURNAME column.

any help please.

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My ASP