private void button3_Click(object sender, EventArgs e)
{
string type = null;
string xval = null;
switch (comboBox1.SelectedItem.ToString())
{
case "请选择":
MessageBox.Show("请选择时间粒度！", "错误！");
return;
case "天":
type = "day(停机开始时间)";
xval = "CStr(day(停机开始时间)) + \"号\" as val,";
break;
case "周":
type = "datepart(\"ww\",停机开始时间)";
xval = "\"第\" + CStr(datepart(\"ww\", 停机开始时间)) + \"周\" as val,";
break;
case "月":
type = "month(停机开始时间)";
xval = "CStr(month(停机开始时间)) + \"月\" as val,";
break;
case "年":
type = "year(停机开始时间)";
xval = "CStr(year(停机开始时间)) + \"年\" as val,";
break;
default:
type = null;
break;
}
string sql = "SELECT " + xval + "SUM(CInt(datediff(\"n\",维修记录.停机开始时间,维修记录.停机结束时间))) as 时间 " +
"from 维修记录 where 停机开始时间 between #" + dateTimePicker1.Value.ToString("yyyy-MM-dd HH:mm:ss") + "# and #" + dateTimePicker2.Value.ToString("yyyy-MM-dd HH:mm:ss") + "# and year(停机开始时间) >= '2010' group by " + type;
Form12 form = new Form12(sql, SeriesChartType.Column, "val", "时间");
form.ShowDialog();
}
private void button2_Click(object sender, EventArgs e)
{
string sql = "SELECT 故障类型,SUM(CInt(datediff(\"n\",维修记录.停机开始时间,维修记录.停机结束时间))) as 时间 " +
"from 维修记录 where 停机开始时间 between #" + dateTimePicker1.Value.ToString("yyyy-MM-dd HH:mm:ss") + "# and #" + dateTimePicker2.Value.ToString("yyyy-MM-dd HH:mm:ss") + "# group by 故障类型";
Form12 form = new Form12(sql, SeriesChartType.Pie, "故障类型", "时间");
form.ShowDialog();
}