protected void Page_Load(object sender, EventArgs e)
{
Calendar1.Visible = false;
}
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection("connection string");
con.Open();
DataTable dt = new DataTable();
SqlCommand sqlCmd = new SqlCommand("SELECT distinct plantname,operatorname FROM datalogging1 WHERE Line='" + ddlline.SelectedItem + "'and date='"+txtdate.Text+"'and shiftname='"+ddlshift.SelectedItem+"'", con);
SqlDataAdapter sqlDa = new SqlDataAdapter(sqlCmd);
sqlDa.Fill(dt);
if (dt.Rows.Count > 0)
{
//Where ColumnName is the Field from the DB that you want to display
txtplant.Text = dt.Rows[0]["Plantname"].ToString();
txtop.Text = dt.Rows[0]["operatorname"].ToString();
}
}
protected void btndate_Click(object sender, EventArgs e)
{
Calendar1.Visible = true;
}
protected void Calendar1_SelectionChanged(object sender, EventArgs e)
{
txtdate.Text = Calendar1.SelectedDate.ToString("yyyy/MM/dd");
}
protected void btnreport_Click(object sender, EventArgs e)
{
int var = ddlshift.SelectedIndex;
switch (var)
{
case 0:
break;
case 1: SqlConnection con1 = new SqlConnection("connection string");
con1.Open();
DataTable dt = new DataTable();
SqlCommand cmd1 = new SqlCommand("select Date=convert(varchar(12),isnull(t1.date,t2.date),101),Time=convert(varchar(8),isnull(t1.time,t2.time),8),isnull(t1.temprature,0) as Temperature,isnull(t2.pressure,0) as Pressure,isnull(t3.co2,0) as Co2,isnull(t4.do2,0) as Do2,isnull(t5.ph,0) as pH,isnull(t6.speed,0) as Speed,isnull(t7.flow,0) as Flow from temprature3 t1 full outer join pressure3 t2 on t2.date=t1.date and t1.time=t2.time full outer join co23 t3 on t1.date=t3.date and t1.time=t3.time full outer join do23 t4 on t1.date=t4.date and t1.time=t4.time full outer join ph3 t5 on t1.date=t5.date and t1.time=t5.time full outer join speed3 t6 on t1.date=t6.date and t1.time=t6.time full outer join flow3 t7 on t1.date=t7.date and t1.time=t7.time where t1.Date='"+txtdate.Text+"' and t1.time between '1900-01-01 7:00:00.000' and '1900-01-01 12:59:59.999'", con1);
SqlDataAdapter da1 = new SqlDataAdapter(cmd1);
da1.Fill(dt);
GridView1.Visible = true;
GridView1.DataSource = dt;
GridView1.DataBind();
break;
case 2:
SqlConnection con2 = new SqlConnection("connection string");
con2.Open();
DataTable dt1 = new DataTable();
SqlCommand cmd2 = new SqlCommand("select Date=convert(varchar(12),isnull(t1.date,t2.date),101),Time=convert(varchar(8),isnull(t1.time,t2.time),8),isnull(t1.temprature,0) as Temperature,isnull(t2.pressure,0) as Pressure,isnull(t3.co2,0) as Co2,isnull(t4.do2,0) as Do2,isnull(t5.ph,0) as pH,isnull(t6.speed,0) as Speed,isnull(t7.flow,0) as Flow from temprature3 t1 full outer join pressure3 t2 on t2.date=t1.date and t1.time=t2.time full outer join co23 t3 on t1.date=t3.date and t1.time=t3.time full outer join do23 t4 on t1.date=t4.date and t1.time=t4.time full outer join ph3 t5 on t1.date=t5.date and t1.time=t5.time full outer join speed3 t6 on t1.date=t6.date and t1.time=t6.time full outer join flow3 t7 on t1.date=t7.date and t1.time=t7.time where t1.Date='" + txtdate.Text + "' and t1.time between '1900-01-01 13:00:00.000' and '1900-01-01 22:59:59.999'", con2);
SqlDataAdapter da2 = new SqlDataAdapter(cmd2);
da2.Fill(dt1);
GridView1.Visible = true;
GridView1.DataSource = dt1;
GridView1.DataBind();
break;
case 3: SqlConnection con3 = new SqlConnection(""connection string);
con3.Open();
DataTable dt2 = new DataTable();
SqlCommand cmd3 = new SqlCommand("select Date=convert(varchar(12),isnull(t1.date,t2.date),101),Time=convert(varchar(8),isnull(t1.time,t2.time),8),isnull(t1.temprature,0) as Temperature,isnull(t2.pressure,0) as Pressure,isnull(t3.co2,0) as Co2,isnull(t4.do2,0) as Do2,isnull(t5.ph,0) as pH,isnull(t6.speed,0) as Speed,isnull(t7.flow,0) as Flow from temprature3 t1 full outer join pressure3 t2 on t2.date=t1.date and t1.time=t2.time full outer join co23 t3 on t1.date=t3.date and t1.time=t3.time full outer join do23 t4 on t1.date=t4.date and t1.time=t4.time full outer join ph3 t5 on t1.date=t5.date and t1.time=t5.time full outer join speed3 t6 on t1.date=t6.date and t1.time=t6.time full outer join flow3 t7 on t1.date=t7.date and t1.time=t7.time where t1.Date='" + txtdate.Text + "' and t1.time between '1900-01-01 23:00:00.000' and '1900-01-01 6:59:59.999'", con3);
SqlDataAdapter da3 = new SqlDataAdapter(cmd3);
da3.Fill(dt2);
GridView1.Visible = true;
GridView1.DataSource = dt2;
GridView1.DataBind();
break;
}
}
public void ExportGridToExcel(GridView grdGridView, string fileName)
{
Response.Clear();
Response.AddHeader("content-disposition",
string.Format("attachment;filename={0}.xls", fileName));
Response.Charset = "";
Response.ContentType = "application/vnd.xls";
StringWriter stringWrite = new StringWriter();
HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
grdGridView.RenderControl(htmlWrite);
Response.Write(stringWrite.ToString());
Response.End();
}
public override void VerifyRenderingInServerForm(Control control)
{
/* Verifies that a Form control was rendered */
}
protected void Button1_Click(object sender, EventArgs e)
{
ExportGridToExcel(GridView1, "report.xls");
}
答案 0 :(得分：1)
由于您尚未提供代码，我们无法解决问题。
但下面的代码与Export GridView data to Excel完美配合，您可以使用此代码。
public void ExportGridToExcel(GridView grdGridView, string fileName)
{
Response.ClearContent();
Response.AddHeader("content-disposition",
string.Format("attachment;filename={0}.xls", fileName));
Response.ContentType = "application/vnd.xls";
StringWriter stringWrite = new StringWriter();
HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
grdGridView.RenderControl(htmlWrite);
Response.Write(stringWrite.ToString());
Response.Flush();
Response.End();
}