Exporting Datatable Into Excel Using Vb.net Code Behind?
Mar 16, 2010
I've been working on this for a while and everything that I have read seems to tell me to use the same setup. I have been able to export the data to an xls file on my local C drive but that won't work when hosted on the server as I'll want users to export their data to their local machines as well... I guess the issue I'm having (or at least what I think am having) has to do with my response.end() function. I'll give you my code that works and the one that doesn't... In the end they will both do the same thing...Here is the code I've been playing with for my button:
[Code]....
Now here is where it will at least save on my local drive via a button in my drop down menu:
[Code]....
I need to prompt the user to save the file to a location and perhaps be able to name the file etc
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Similar Messages:
Jun 9, 2010
I've created a function that takes a datatable and exports it to excel by creating a Table.
When the file exported excel says "this file is in a different format than it's extension, do you wnat to open it anyway?". I'd like to get rid of this message if I can. and...There is an extra row at the top of the the excel file (row 0) and it's empty.
Here is my code:
[Code]....
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May 7, 2015
My datatable has 0123 when I export it becomes 123, Datatable can be numeric or alphanumeric, after searching I got this link [URL] ....
I didnt managed to use your code in DataTable.
My Code.
dtExport is my DataTable
DataGrid dGrid = new DataGrid();
dGrid.DataSource = dtExport;
dGrid.DataBind();
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
dGrid.RenderControl(hw);
[Code]....
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Jan 13, 2010
I catch the error of "Property Evaluation Failed" for the sentence "Response.End" in the following code.
Sub exportToExcel(ByVal _DT As DataTable)
Dim dt As DataTable = _DT
Dim attachment As String = "attachment; filename=userlist.xls"
Response.ClearContent() [code]....
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Nov 2, 2010
I've got an .rdlc report which I print from my .net app (C# Visual Studio 2005), where I use a RemoteReportPrinter object. I give it as parameters the server name, report name, report parameters, etc. Works fine. My question is, I would live to do an analagous export of that report to Excel. Set it up exactly the same, but have it export to Excel rather than print, probably using some other type of object than RemoteReportPrinter.
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Feb 28, 2013
I'm exporting a Gridview to excel. I get all the gridview header and content in excel in addition to that i need to add a header text like report name in header of the excel sheet with line break in header.
I tried the solution in this link [URL] by adding
Table.Caption = "Header Text"
Table.CaptionAlign = TableCaptionAlign.Top
but i get error Reference to a non shared member requires an object reference.
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Apr 1, 2010
when I used a code of exporting gridview into excel this code worked for a new website which is without masterpage.
my code:
public override void VerifyRenderingInServerForm(Control control) { }
protected void BtnGenerateReport_Click(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition",
"attachment;filename=GridViewExport.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
StringWriter sw = new StringWriter();.....
Now the same code when I copy it in my project having masterpage . there is no compiler error but it is genereating excel file withno data in it but in fact there is data in the grid view at runtime.
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Oct 17, 2013
I have a project in vb with a gridview in a multiview and i want to save in a workbook excel the gridview displayed data. I have read many articles but in the end i have downloaded the code from URL...and i adapted for my code. The problem is that when i press the ExporttoExcel button it's exporting only this...I cannot figure out that is the problem.
<style> .textmode { mso-number-format:@; } </style><div>
</div>
My code is down
Imports System.Data
Imports System.Data.SqlClient
Imports System.Web.UI.WebControls.TableRow
Imports System.Web.UI.WebControls.GridViewRow
Imports System.Diagnostics
Imports System.IO
Imports System.Configuration
[code]....
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Mar 30, 2010
is there any way that i could export multiple tables already formatted into multiple excel sheets. I know how to export data to multiple sheets through dataset while looping through tables, rows and columns and then add styles.
But I really want to export formatted html tables each into seperate sheet
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Dec 14, 2010
trying to export a dataset to excel directly. I'm repeating, it's a dataset to excel (NOT DATA GRID OR GRID VIEW TO EXCEL). The problem I face is formatting. I'm exporting the excel which has aroung 13 columns.
A column should be in dd/MM/yyyy 00:00:00 format. Time will always be 00:00:00. It is exporting in correct format only, but for example when the date is Jan 05, 2010, when it comes from database it shows correct format as05/01/2010 00:00:00. When it binds, it binds as 5/1/2010 00:00 which is not suppose to happen.
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Feb 22, 2010
In my asp.net application i wanted to export the SQL query result to Excel and that excel should be avaliable to the user as a download.
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Feb 4, 2011
I have multiple gridviews to be exported to excel. 1 gridview per worksheet.
How to do that ? ( or in general how to write an html string to a worksheet )
This is to be done in asp.net , server side.
I can create multiple worksheets via epplus.codeplex.com nicely, but it works on cell level. I could export DataTable, but how to export Gridview's HTML ?
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Jan 4, 2011
On two of my web forms I have the ability to export a gridview to an excel file. On my local machine. it works. So when I click an image button it gives me the option of opening or saving a gridview as Excel.
However, when I run on the web server. It does not give me the option to open or save, it just opens the gridview as an excel document when the button is clicked.
Even stranger: I have this running on two separate forms. On one form when it opens the gridview as an Excel file it includes a tool bar, so that If a user wishes they could do a 'file', 'save'; However the other one does not have a tool bar?
Ideally I would like them to get the prompt like on the local machine, to open or save.
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Oct 29, 2010
I have a .rdlc report created in Visual Studio and Upon executing, I wish to have the user be able to export the resulting data to Excel. How would I go about doing this
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Jul 27, 2010
I have fetched data from databse using Nhibernate as a data access.
I am traversing a list in View using foreach loop.
I want to export this tables data to Excel.
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Jan 17, 2011
I am trying to export grid view data into excel 2007 i.e. xlsx format. but its giving error.
i am using following code
protected void Button1_Click(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
[Code]....
but not working properly and on opening the file it gives following error "Excel cannot open the file 'ChangeRequestList[2].xlsx' because the file format or file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file"
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Feb 25, 2010
I have a gridvidew (GV2). I want the user to be able to export the contents of this gridview to an excel spreadsheet for offline processing.
Here is my subroutine:
[code]...
On clicking the ExcelButton I get the error message:
Control 'GV2' of type 'GridView' must be placed inside a form tag with runat=server.
The control GV2 is in fact inside:
<form id="form1" runat="server"></form>
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May 5, 2010
I'm exporting data to Excel but where the currency values are formatted I get an  before the currency symbol.
Here is my code:
[Code]....
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Mar 3, 2011
I am exporting an aspx page as an xls (excel) file.
I have everything working fine, but am wondering if there is a way to section some data from the aspx page into different excel worksheets?
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Nov 8, 2010
So im trying to develop a web-based site that allows a set of charts to be created about different informationNow i need to use this information to generate some charts (most likely throught excel) and then export all of the charts to a word document. The problem im finding is how am i able to send all the charts to word and format them to put multiple on one page and formatted to certain locations. Is there a way to do this or will i be fored to send them to word and then open that document and organize them myself.?
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May 10, 2010
I am binding data from a dataset to a grid and exporting data from the grid to an excel.if the the number of items in the grid is greater than 50000,an error message is displayed.
So i want to split the data and display it in different worksheets in excel.(Am working in a web application)
using this code for exporting to excel
gvExcel.DataSource = DTS;
gvExcel.DataBind();
Response.AddHeader("content-disposition", "attachment; filename= filename.xls");
Response.ContentType = "application/excel";
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
gvExcel.RenderControl(htw);
// Style is added dynamically
Response.Write(style);
Response.Write(sw.ToString());
Response.End();
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Feb 9, 2010
I have a asp.net page that generates a report. For better or for worse, the entire thing is generated using nested tables. I am able to export the page to excel, however I lose all my formatting (can't set column widths, etc). Is there a way to handle this? I'm open to adding any goofy MS Office -specific tags that are required to the html side of it.
If this isn't feasible and if anyone has any other ideas, the requirement is that users need a report that:
a) They can manually touch up with some personalization / area-specific data
b) Needs to be hide/show columns based on user's location
c) Needs to run from the web site.
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Feb 2, 2010
well I am trying to export sql data that has 80,000 records more than 65,000 rows which excel has.i do I export that much data in one trial without error.is it posible with bcp utility?
I tried DTS but did not work what option shall i use to define range in excel file to export data ?
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Aug 12, 2010
i did the mysql data export into excel in row wise when button click... here i want the same data export into columns wise..i used datatable and dataset for this function.. here i need all data should export in column..here i used some code..
[Code]....
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Feb 10, 2010
The following code is a short version of a process to export data from Sql Server to Excel. I am moving 300k of data to excel and am having to divide it up into 65500+ blocks. This is not a problem in classic asp but .net does not seem to like this method. When ExecuteNonQuery() executes the insert statement each time through the loop it really slows down this process. Otherwise in runs in seconds commenting out ExecuteNonQuery(). Also it looks like the excel file does not grow until the very end. I would think it would be inserting every time it did ExecuteNonQuery(). Do I have something wrong here or should I do a completely different method for this?
using (SqlConnection conn = new SqlConnection(sqlConnString)
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