473,390 Members | 1,482 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,390 software developers and data experts.

Export datagrid to Excel with a lot of rows

Hello

Here's my code to export a datagrid to Exel :
Response.Clear()
Response.Buffer = True
Response.ContentType = "application/vnd.ms-excel"
Response.Charset = ""
Dim monStringWriter As StringWriter = New StringWriter
Dim monHtmlTextWriter As HtmlTextWriter = New
HtmlTextWriter(monStringWriter)
monDG.RenderControl(monHtmlTextWriter)
Response.Write(monStringWriter.ToString())
Response.End()

It's work perfectly, but when my datagrid displays for exeample 10000
rows,
the export doesn't work.
Instead I have the page impossible to display !!!!

Any idea ?
Jul 31 '06 #1
4 2163
You could write it out to disk and then redirect to it, providing the
directory the file is written to is a virtual one.
--
-Demetri
"Amirallia" wrote:
Hello

Here's my code to export a datagrid to Exel :
Response.Clear()
Response.Buffer = True
Response.ContentType = "application/vnd.ms-excel"
Response.Charset = ""
Dim monStringWriter As StringWriter = New StringWriter
Dim monHtmlTextWriter As HtmlTextWriter = New
HtmlTextWriter(monStringWriter)
monDG.RenderControl(monHtmlTextWriter)
Response.Write(monStringWriter.ToString())
Response.End()

It's work perfectly, but when my datagrid displays for exeample 10000
rows,
the export doesn't work.
Instead I have the page impossible to display !!!!

Any idea ?
Jul 31 '06 #2
Demetri a formulé la demande :
You could write it out to disk and then redirect to it, providing the
directory the file is written to is a virtual one.
--
-Demetri
"Amirallia" wrote:
>Hello

Here's my code to export a datagrid to Exel :
Response.Clear()
Response.Buffer = True
Response.ContentType = "application/vnd.ms-excel"
Response.Charset = ""
Dim monStringWriter As StringWriter = New StringWriter
Dim monHtmlTextWriter As HtmlTextWriter = New
HtmlTextWriter(monStringWriter)
monDG.RenderControl(monHtmlTextWriter)
Response.Write(monStringWriter.ToString())
Response.End()

It's work perfectly, but when my datagrid displays for exeample 10000
rows,
the export doesn't work.
Instead I have the page impossible to display !!!!

Any idea ?
Do you have an example ?

Thanks
Jul 31 '06 #3
No tangible example but its not that hard.

You have a web folder setup where the file will be written out to. Make sure
permissions are setup for ASPNet User to write out the files there.

Your method that extracts the data from the grid then converts that data to
an excel format (most common is CSV) and then outputs it to a file in the web
folder mentioned above.

Then at the end of that method it does a Redirect to that file.

--
-Demetri
"Amirallia" wrote:
Demetri a formulé la demande :
You could write it out to disk and then redirect to it, providing the
directory the file is written to is a virtual one.
--
-Demetri
"Amirallia" wrote:
Hello

Here's my code to export a datagrid to Exel :
Response.Clear()
Response.Buffer = True
Response.ContentType = "application/vnd.ms-excel"
Response.Charset = ""
Dim monStringWriter As StringWriter = New StringWriter
Dim monHtmlTextWriter As HtmlTextWriter = New
HtmlTextWriter(monStringWriter)
monDG.RenderControl(monHtmlTextWriter)
Response.Write(monStringWriter.ToString())
Response.End()

It's work perfectly, but when my datagrid displays for exeample 10000
rows,
the export doesn't work.
Instead I have the page impossible to display !!!!

Any idea ?

Do you have an example ?

Thanks
Jul 31 '06 #4
Demetri avait écrit le 31.07.2006 :
No tangible example but its not that hard.

You have a web folder setup where the file will be written out to. Make sure
permissions are setup for ASPNet User to write out the files there.

Your method that extracts the data from the grid then converts that data to
an excel format (most common is CSV) and then outputs it to a file in the web
folder mentioned above.

Then at the end of that method it does a Redirect to that file.

--
-Demetri
"Amirallia" wrote:
>Demetri a formulé la demande :
>>You could write it out to disk and then redirect to it, providing the
directory the file is written to is a virtual one.
--
-Demetri
"Amirallia" wrote:

Hello

Here's my code to export a datagrid to Exel :
Response.Clear()
Response.Buffer = True
Response.ContentType = "application/vnd.ms-excel"
Response.Charset = ""
Dim monStringWriter As StringWriter = New StringWriter
Dim monHtmlTextWriter As HtmlTextWriter = New
HtmlTextWriter(monStringWriter)
monDG.RenderControl(monHtmlTextWriter)
Response.Write(monStringWriter.ToString())
Response.End()

It's work perfectly, but when my datagrid displays for exeample 10000
rows,
the export doesn't work.
Instead I have the page impossible to display !!!!

Any idea ?

Do you have an example ?

Thanks
sorry but it makes the same thing, directly redirect to a white page.

If I put a break point in my code, when I click on the button, It'
doesn't stop... Here'is my code

Dim Separator As String = ";"
Dim lLigne, lCol As Integer
Dim item As DataGridColumn
Dim strValeur As String
Dim monStreamWriter As System.IO.StreamWriter = New
System.IO.StreamWriter(Server.MapPath("./") & "upload\xxx.csv")

Try
For Each item In dg.Columns
monStreamWriter.WriteLine(item.HeaderText & Separator)
Next item

monStreamWriter.WriteLine(ControlChars.NewLine)
For lLigne = 1 To Me.dg.Items.Count - 1
For lCol = 0 To Me.dg.Items(lLigne).Cells.Count - 1
If Me.dg.Items(lLigne).Cells(lCol).Text = " "
Then
strValeur = ""
Else
strValeur =
Me.dg.Items(lLigne).Cells(lCol).Text
End If
strValeur = strValeur & Separator
Next

monStreamWriter.WriteLine(strValeur & Separator)
monStreamWriter.WriteLine(ControlChars.NewLine)
Next

monStreamWriter.Close()

Response.Redirect("Upload\xxx.csv")
Aug 2 '06 #5

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

5
by: Maria L. | last post by:
Hi, I need to export the content of a DataGrid (in Windows application in C#), into an Excel spreadsheet. Anyone knows how to do this? Any code snippets would help! thanks a lot, Maria
0
by: sunilkumar Reddy via DotNetMonster.com | last post by:
hai all first we can take binded grid Export to excel data from ultrawebgrid (or) datagrid rows, Each row data Expoting to one worksheet in excel workbook, like as grid row1 data contain sheet1...
1
by: Diego | last post by:
Hi, I have a ASP.NET application and i'm interested in reporting in excel format. I read a good artile written by Steve C. Orr that gave me info about exporting to excel. ...
8
by: DC Gringo | last post by:
I have a simple button that should open another window and export a datagrid to an Excel file. I'm getting: "Name 'window' is not declared." What do I need to declare or import? <INPUT...
3
by: mattdaddym | last post by:
Hi all, I have been using the following code to export my datagrids to excel for quite some time. Very simple and very effective. <code> Sub btnExcelExport_Click ( s As Object, e As...
0
by: sunilkumar Reddy via DotNetMonster.com | last post by:
hai all first we have taken binded grid Export to excel data from ultrawebgrid (or) datagrid rows, Each row data Expoting to one worksheet in excel workbook, like as grid row1 data contain...
0
by: kieran | last post by:
Hi, I have an 'export to excel' button on my Datagrid. All works well except that on my Datagrid, I have sub total rows. The subtotal rows use colspan so that the subtotals are given above...
2
by: leena13 | last post by:
Hi, The number of rows in the datagrid on my page are approx. around 14130. When I click on the button that exports the records to excel sheet, the page goes blank (I observed that none of the...
2
hemantbasva
by: hemantbasva | last post by:
Note We need to have a template on server for generating report in multiple sheet as we do not had msoffice on server moreover this require a batch job to delete excel file created by the...
0
by: ryjfgjl | last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
0
by: ryjfgjl | last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
0
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.