How to work dataview RowFilter if have more than ten column in which some are blank

Hey Ryan I want to put filter on each column of table....

protected void Unnamed_Click(object sender, EventArgs e)
{
DL.clsDB clsDB = new DL.clsDB();
lDt = clsDB.GetDataSet("EXEC USP_POS_DateWiseStockCB_ReportAll '" +
'5' +
"','" + "12" +
"','" + Convert.ToDateTime("01/03/2015").ToString("yyyy-MM-dd") +
"','" + Convert.ToDateTime("23/03/2015").ToString("yyyy-MM-dd") +
"','" + "0" +
"' ", CommandType.Text).Tables[0];
DataView DV = new DataView(lDt);

if (mm.Text != "")
{
DV.RowFilter = "[Article Name] like = '" + mm.Text.Trim() + "'";
}
GridView1.DataSource = DV;
GridView1.DataBind();
}


}



in this i want to put filter on multiple table