行 116: if (txtED.Text != "")
行 117: myCommand.Parameters.AddWithValue("@ED", Convert.ToInt32(txtED.Text.Substring(0, 4)) - 1911 + txtED.Text.Substring(4, 4));
行 118: grdCourse.DataSource = SqlDBUtils.ExecuteDataSet(myCommand);
行 119: grdCourse.DataBind();
行 120: grdCourse.Visible = true;
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