C#窗体应用程序中，怎样多个输入框只用一个查询按钮查询数据？

Question

C#窗体应用程序中，怎样多个输入框只用一个查询按钮查询数据？已经写出一个输入框查询了  public void show(int pageIndex)        {            searchData = searchText.Text.Trim();                       string SqlStr1 = string.Format(@"SELECT *                                               FROM IMOS_LO_Bin                                         where Material_Code like '%{0}%' or  Material_Name like '%{0}%' or Material_Spec like '%{0}%'                                        ", searchData);            DataSet ds1 = DataHelper.Fill(SqlStr1);            dgvWarning.DataSource = ds1.Tables[0];            dgvWarning.RowsDefaultCellStyle.BackColor = Color.LightCyan;            dgvWarning.AlternatingRowsDefaultCellStyle.BackColor = Color.White;        }        private void dgvWarning_RowStateChanged(object sender, DataGridViewRowStateChangedEventArgs e)        {            e.Row.HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleRight;            e.Row.HeaderCell.Value = string.Format("{0}", e.Row.Index + 1);        }              private void search_Click(object sender, EventArgs e)        {             show(1);        }