Databases :: Read Excel Files Using Oledbreader Row By Row?
Aug 5, 2010
i'm trying to read an excel file and get data on a row by row basis. Since after converting the pdf file into an excel file, the formatting went a bit haywire but if read row by row, i'm still able to retrieve the original data.
As I am unable to generate the excel file using a single worksheet, i have multiple sheets in the excel file. I also need help on reading multiple sheets.
Currently i am onli able to get data via columns but due to the formatting going haywire, i gave up on it.
If I use Microsoft.Jet.OLEDB.4.0 to retreive for example named range or sheet from Excel and use it as data source for some server control on the ASP page, everything works fine. But when I try to get table from Excel like this: "select * from [Table1]", debugger complains that database engine could not find object Table1. So how should I reference Table1 in Excel file so that the database engine could find it?
string strFileName = FileUpload1.PostedFile.FileName; string connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + strFileName + ";" + "Extended Properties=Excel 8.0;"; OleDbConnection objConn = new OleDbConnection(connectionString); objConn.Open(); String strConString = "SELECT * FROM [Product Classification 5$]"; //where date = CDate('" + DateTime.Today.ToShortDateString() + "')"; OleDbCommand objCmdSelect = new OleDbCommand(strConString, objConn); // Create new OleDbDataAdapter that is used to build a DataSet // based on the preceding SQL SELECT statement. OleDbDataAdapter objAdapter1 = new OleDbDataAdapter(); // Pass the Select command to the adapter. objAdapter1.SelectCommand = objCmdSelect; // Create new DataSet to hold information from the worksheet. DataSet objDataset1 = new DataSet(); objAdapter1.Fill(objDataset1, "ExcelData");
but in it doesnt read the Description data of 20 & 30 because somebody said if the first cell value is string type then all the column should be string but in mycase its coming as mixed(alpha & numeric), so that it cant read the data, i tried to convert the column as Text then also the same problem continues,
Im reading some data from the excel file, using below code
objBusy = new BusinessLogic(); string strFileName = FileUpload1.PostedFile.FileName; string connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + strFileName + ";" + "Extended Properties=Excel 8.0;"; OleDbConnection objConn = new OleDbConnection(connectionString); objConn.Open(); String strConString = "SELECT * FROM [Product1$]"; //where date = CDate('" + DateTime.Today.ToShortDateString() + "')"; OleDbCommand objCmdSelect = new OleDbCommand(strConString, objConn); // Create new OleDbDataAdapter that is used to build a DataSet // based on the preceding SQL SELECT statement. OleDbDataAdapter objAdapter1 = new OleDbDataAdapter(); // Pass the Select command to the adapter. objAdapter1.SelectCommand = objCmdSelect; // Create new DataSet to hold information from the worksheet. DataSet objDataset1 = new DataSet(); objAdapter1.Fill(objDataset1, "ExcelData");
after this if i looks on the DataSet i see some of the cell value not read from the Excel file, what was the problem and how to resolve this?
I have read the excel in asp.net. I am using OledbDatareader for read the column name.
[Code]....
Now my problem is the "date" field. If Excel sheet having column name "Date" then i got the error. i could not use the Column index because its also not fix. How can i ignore the upper case charactors in column name ?
i have been searching a lot but i didn't find my specefic result, my question is: how can i read excel sheet from asp.net using vb and how can i insert values into a worksheet from my web page
i want to ask whether we can read and write excel in website by using asp.net i don't want user to download the excel file and after edit upload again to website. what i want is user can read the excel file in website, after they edit, save the excel
I have 3 excel files having uniqe column Name JobNo. i want to develop a web page containing serach option based on Jobno.
User just type the jobno and press on search button corresponding record should be display on grid view.record may present any of the excel sheet.how can i acheive this.
I have a web app where user uploads a file.ile is saved in server locally and I want to read some data from it.Currently my development server has office 2003.So do I need office 2007 in order to be able to read an excel from office 2007 ?
Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application(); Microsoft.Office.Interop.Excel.Workbook wrkBook; // = new Microsoft.Office.Interop.Excel.Workbook();
Iām trying to read images from an excel file using OleDbDataReader. My excel file has 6 columns of data, the first 5 are all text but the last is image. While Iām reading the record, It's doing fine on the first 5 columns but return me with a for the sixth column.
I have an excel header that has the following header title : "REMARKS (i.e. awarded etc.)"
but it seems that it can't read the cell with the brackets or it is there is a certain length of the excel header?
While reader.Read() Dim DataRow As DataRow = dtDataTable.NewRow() DataRow("Remarks") = Trim(reader("REMARKS i.e. awarded etc.").ToString) dtDataTable.Rows.Add(DataRow) End While
My web page contains a file upload control that is used to select excel file. What my code does; is to read the content of that file and store its content to DB. Right now, I save this file to server and read its content using OLEDB.I want to know is there any way i can read the content without saving it on the server?
I have an Excel file called Products.xls .I have Columns A and B, with the titles NAME and QUANTITY.The name of the sheet is SHEET1.The file has about 40 lines.How do i show these data on a Gridview or Listview ?
I'd like to know which are the best practise to easily manipulate excel files.I need to do only simple actions: create new file, add new sheets, populate cells from a dataset and add calculate cell.Is there something build-in visual studio or have I to use some third part tools?
I am facing problem..how to read Excel file from the 5th row onwards and how to store the all records into Database Note: More over i do want store few coloumns records(3 out 8) only in my database. consider this point.
I want to read write excel file in my application without installing the office on my server. Means my server don't have any excel (MS office) installation. Is it necessory to install the office on server to excute the program of read or write the excel file.
