C# - Importing An Excel WorkSheet Into A Datatable
May 13, 2010
I have been asked to create import functionality in my application. I am getting an excel worksheet as input. The worksheet has column headers followed by data. The users want to simply select an xls file from their system, click upload and the tool deletes the table in the database and adds this new data.
I thought the best way would be too bring the data into a datatable object and do a foeach for every row in the datatable insert row by row into the db. My question is what can anyone give me code to open an excel file, know what line the data starts on in the file, and import the data into a datable object?
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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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Mar 28, 2011
I've been searching for various posts on Excel and ASP.Net, and wanted to try and figure out if what I'm attempting has any chance of working. I have a special Excel workbook with a worksheet that has a bunch of calculations and such for various fields that creates an order for his crew. My client uses this Excel worksheet for everything. He's asking me to be able to see online orders (which I have), click a link and have the worksheet be passed down to the client all populated and formatted exactly as is (just adding/editing data).
Is this even possible? I'd have to load this specific .xls file, then open it on the server, save data to various cells, and then do a Save As and then binarystream it down to the client. I'm quite certain there is no version of Excel loaded on the server. So I'm perplexed as to how to accomplish this. Has anyone encountered this situation before and been able to accomplish what's being asked?
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May 8, 2010
am new to vb.net programming. i am trying to read an existing excel 2007 file from vb.net i used a form with single button and i written code in button click event
Imports Excel = Microsoft.Office.Interop.Excel
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
Dim xlWorkSheet As Excel.Worksheet
xlApp = New Excel.ApplicationClass
xlWorkBook = xlApp.Workbooks.Open("C:Documents and SettingsUSERDesktopd0805
[code]...
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Aug 10, 2010
I am using Visual Studio 2005 version, DOTNET Framework 2.0, Technologies C#.NET and ASP.NET and Operating System WindowsXP.In my excel sheet i have two columns of data. Using Gridview i am retrieving data from excel sheet and presenting data. While i am writing RowDeleting event i am getting error primary key not exist.Below code i am using in my program: Default.aspx
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Aug 11, 2010
I am exporting dataTable from aspx page to excel use the regular way-
response.ContentType = "application/vnd.ms-excel";response.AppendHeader("content-disposition",
"attachment; filename=" + FileName); etc...
i need the worksheet direction to be right to left,
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Feb 27, 2010
I have huge excel files that I have to open from web browser. It takes several minutes to load huge file. Is it possible to open a single worksheet (single tab) at a time from excel file that contains many worksheets? I have to do this using C# / asp.net MVC
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Sep 2, 2010
I've got a simple (inline) ASPX page that is ouputting XML.
I want to import this XML into Excel 2007 using Data | From Other Sources | From XML Data Import.
If I specify the URL for my APSX page Excel opens the result into the Text Import Wizard :(
If I open my URL directly from Notepad, save the content to a file and import that into Excel, its correctly treating is a Xml. why Excel is treating the result as text when is comes from a Url?
Heres the code from the ASPX Page
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<%@ Import Namespace="System.Xml" %>
[Code]....
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Jan 21, 2011
Is there some simple way I am missing to import an Excel worksheet into a datatable using an OleDBConnection and change what row the header is located on? I have HDR=YES in my connection string and that works great when header is on row 1 but the header is actually going to need to be on row 3. I am using the following CommandText:
SELECT [headercol1name], [headercol2name], [headercol3name] FROM [sheetname]
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Aug 29, 2010
Is there a way wherein I could import data from multiple sheets of an excel file?
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Nov 26, 2010
I have an issue while importing the data froma customized gridview to an excel sheet .It prompts me to save the excel sheet and excel sheet is getting saved on my machine but while opening the excel sheet I am getting an error as follows and it opens as blank.Could some one tell me what the issue is.I have given the complete code to import excel sheet and error while I open it as well. In-addition to this suprisingly another issue too I have encountered when I am trying to export.
While I am trying import by clicking on Import only the datas in the CurrentPage is getting exported and remaining datas are not..I mean ..If my GridView shows 50 records at a time only these records are getting imported and remaning records are not
public static void ExportToExcel(DataTable dtFull)
{
string fileName = string.Empty;
OpenFileDialog fileDlg = new OpenFileDialog();
fileDlg.DefaultExt = "xls";
fileDlg.Filter = "Excel files (*.xls)|*.xls";
fileDlg.CheckFileExists = false;
// fileDlg.
fileDlg.Title = "Choose XLS";
if (fileDlg.ShowDialog() == DialogResult.Cancel)
return;
fileName = fileDlg.FileName;
try
{
if(System.IO.File.Exists(fileName))
{
FileStream fs = System.IO.File.OpenRead(fileName);
fs.Close();
}
}
catch
{....................
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Oct 4, 2010
I have a table with 100 records. I need to import extra 50 records in the same table. So from 101 to 150 records should insert the data which is present in excel Simply I want to import 50 records from Excel to Table without disturbing the first 100 records.
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Aug 3, 2010
I got an excel spreadsheet (will have tons eventually) that have "Start Date" and "End Date" columns, with a format of "dd/mm/yyyy".For time being, I just want to import these to a temporary table in my database, and use the SQL Server Import/Export wizards.
Now this wizard import the the above fields as nvarchar, instead of date or datetime (not sure which would be better?).I tried to convert the columns to datetime after importing, but this is not allowed (Saving changes is not permitted. The changes you made require that the following tables to be dropped and re-created, ......).
So I deleted the temporary table, and ran the wizard again, this time trying to edit the mappings and specify the two fields to be date times, but this also fails.I also fiddled around with convert and cast, but always end up getting "Conversion failed when converting date and/or time from character string." errors.
I looked myself skew, and are pretty sure all the fields in the excel sheet do have values, and are in the "dd/mm/yyyy" format.(I've been absent from SQL for a long long time!)
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Feb 11, 2010
[Code]....
I'm attempting to import, using VB.Net, a spreadsheet from some other users than myself. In the spreadsheet with headers, the numbers I'm importing are in the first column of the spreadsheet (Excel 2003 to 2007). I've defined my datacolumn for the column with the numbers as a "string". What's happening is the trailing zero is dropped; so 1.1 and 1.10 both appear as => 1.1.My code is attatched below.I know I'm missing something, I just don't see it!I've tried both; MicroSoft.JET.OleDb.4.0 and MicroSoft.ACE.OLEDB.12.0 but neither seems to make a difference.
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Mar 17, 2011
I am trying to insert data from excel file into sql server database table. which is working fine.. But when i tried it in table which has primaryKey As Autonumber and date as getdate(). its not inserting values in rows?
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May 19, 2010
this is me once again moving around data access. my problem now hide in the import process of an excel file that would be inserted into sql db.
the problem is the excel file may be updated or changed and i have to periodically import it and perform the process but I still cant check or compare between the two Data Source (excel, sql) as I violate the entity integrity (PK)
i found a kind of stupid approach that each time i want to import the file i will empty the table then re-insert the data, but at this step a new problem raise that other tables are !engaged! with it ... so i will violate the referential integrity (FK)
i looking for solution to compare between two sources for each tuple / row, ignore the existing one and insert the new
[Code]....
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Mar 13, 2010
i am developing an appilication using asp.net 3.5 with c#.net and SqlServer 2005 as backend databse.
in my application i have to import the data from excel file to database. the fields in excel file and fields in databse table are same. i just want to import all data to that database table.
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Mar 11, 2011
i am facing the error
The Microsoft Jet database engine could not find the object 'MyDataFile$'. Make sure the object exists and that you spell its name and the path name correctly.
below is my code, i am exporting my excel sheet in HTML format. in case of importing i am facing the above mentioned error.
[code]...
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May 8, 2010
importing excel/spreadsheet into sql server using C#? Whenever I run the webpage by selecting excel file, first it will empty sql server table then import data from excel.
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Aug 27, 2010
I facing a problem when I upload a file from my side while the application is running in server.
The error shows below:
'C:Excel FilesStaff Directory1.xlsx' is not a valid path. Make sure that the path name is spelled correctly and that you are connected to the server on which the file resides.
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Mar 21, 2011
I have a requirement that the user will need to import a list of ID's to the asp.net website from their own spreadsheet. I will provide a button 'btnImport' which will use an OleDbConnection to read the spreadsheet and pull in the id's. I have that working fine in my local dev environment. My question is, when this app is running on a production server, will the user have to upload her spreadsheet to the server first? Or do I need to provide code that will find the file on her machine? I'm not sure how this part of it works.
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Jul 22, 2010
i am currently working on importing excel sheets into my database.
SqlBulkCopy seems to be working fine, when i whole import the data over.
But i can't do automated validation (i.e. checking for identical data in the database & etc, i am stuck!) i can import the excel sheet data a line at a time , and perform automated validation check on them.
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Feb 12, 2010
I am trying to Importing Excel sheet into Sql server table using OleDbDataReader
the problem is it is not fetching the cell values with contains "," (comma) ex: cell value ="03280, 03281"
i am using OleDbConnection oconn =
new
OleDbConnection(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source="
+ Server.MapPath("Files\LineItems.xlsx") +
";Extended Properties='Excel 12.0 Xml;HDR=YES;IMEX=1';");
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Mar 1, 2011
I receive the error message "Could not find installable ISAM." When I try to open an Excel file in my C# code behind of an aspx page. The code is:
[code]...
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Jul 9, 2012
i importing excel data into mssql with ,(comma) delimiter
errror comes when i given comma in data
eg
name address
rafi frankstreet , chennai
below code execute successfully
name address
rafi frankstreet chennai
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