dataset for data mining in excel

=" wkiol1pry6yzl3joaafk3tm_suc776.jpg "/> A1 calculates the sequence of months involved by passing in the start and end months parameter, that is, the file to be used A2 reads all Excel file data that needs to be used in this time range through importxls Loop A3 group by stock code The A4-A5 selects the highest and lowest prices for each stock respectively. A6 Concatenates the above two result sets horizon

(the first row serves as the header)/// /// Public static system. Data. dataset filldataset (){If (! File. exists (filepath )){Throw new exception ("the Excel file does not exist! ");} Arraylist tablelist = new arraylist ();Tablelist = getexceltables ();If (tablelist. Count {Return NULL;} System. Data. datatable

=" + Server.MapPath ("...)". /exceldata.xls ") +"; "+ "Extended Properties=excel 8.0;"; The Create connection object by using the preceding connection string. OleDbConnection objconn = new OleDbConnection (sConnectionString); Open connection with the database. objConn.Open (); The code to follow uses a SQL SELECT command to display the data from the worksheet. Create new OleDbCommand to return

Asp.net implements the method of importing multiple sheet data in Excel to SQLSERVER, This example describes how to import multiple sheet data in Excel to SQLSERVER using asp.net. We will share this with you for your reference. The details are as follows: Public DataSet GetD

("");//prompt the user when the Excel table is empty} Else{ for(inti =0; I {//In front of you need to create a "upfiles" folder, the others do not have to control, you just need to get the value of Excel in the following way, and then put these values in your way to insert into the databasestringtitle = dr[i]["title"]. ToString ();stringLinkurl = dr[i]["Link Address"]. ToString (); stringCategoryName = dr[

Project IntroductionLightweight, Fast C # written library reads Microsoft Excel file (' 97-2007). Cross-platform: -Windows with. Net Framework 2 -Windows Mobile with Compact Framework -Linux, OS X, BSD with Mono How to use C # code: Copy Code code as follows: FileStream stream = File.Open (FilePath, FileMode.Open, FileAccess.Read); 1. Reading from a binary Excel file (' 97-2003 format; *

3686000dtype: int64 This is intuitive, but if you want to display the total value as a single row in the table, you still need to make some minor adjustments. We need to transform the data and convert this series of numbers into DataFrame so that it can be more easily merged into existing data. The T function allows us to change the data arranged by row to the

Solution 1: Use OleDB to obtain data from an Excel file and then use DataSet to transfer data to SQL Server. This method has the advantages of being flexible, you can perform operations on cells in an Excel table as needed. OpenFileDialog = new OpenFileDialog (); OpenF

consumption amount, a certain competitive strategy should be launched to win these customers from their competitors. Line M: indicates the amount of the customer's consumption each time. You can use the last consumption amount or the previous average consumption amount. Different identification methods can be used based on the analysis purpose. Generally, a customer with a large transaction amount has a strong payment ability and low price sensitivity. This is a relatively high-quality customer

." UID = sa; PWD = sa; Database = Db_test "; System.Windows.Forms.OpenFileDialog fd = new OpenFileDialog (); if (FD. ShowDialog () = = DialogResult.OK) {transferdata (fd. FileName, "StUdent ", connstring); }} public void TransferData (string excelfile, String sheetname, String con nectionstring) {DataSet ds = new DataSet (); try {//Get all

asp.net|excel| Export Data The method simply saves the ASP.net page to an HTML page and simply changes the suffix to XLC but Excel can read it, and then I'll see if there is another way to export the data and use the template to generate it. Here is the code County New Asp.ne Tweb application just paste the code in.

In the previous experiment, I tried to use the connection server and ad hoc query to import the data in Excel to the database in SQL server2005. But as the saying goes, the plan cannot keep up with the change. No, the change is coming. In further attempts, we found that using ad hoc queries and other methods is very likely to encounter errors, or the ad hoc query settings configured in the periphery of SQL

the data to convert this series of numbers to dataframe so that it can be easily merged into existing data. The T function allows us to transform the data arranged by rows into columns. DF_SUM=PD. Dataframe (Data=sum_row). T Df_sum The last thing we need to do before we calculate the sum is to add the

Project IntroductionSimple and quick C # library to read Microsoft Excel files ('97-2007 ).Cross-platform:-Windows with. Net Framework 2-Windows Mobile with Compact Framework-Linux, OS X, BSD with Mono 2 +How to Use C # code:Copy codeThe Code is as follows:FileStream stream = File. Open (filePath, FileMode. Open, FileAccess. Read );// 1. Reading from a binary Excel file ('97-2003 format; *. xls)IExcelDataRe

Javax.servlet.http.httpservletresponse;public class Excel extends HttpServlet {public void doget (httpservletrequest Request, HttpServletResponse response) throws Servletexception, IOException {try {//Initialize Fieldname,fielddatearraylist Fieldname=getfieldname (); Excel header Data set ArrayList Fielddata=getfielddata ();

PurposeSometimes, for some reason, the customer may ask us to export the system data to excel or access the familiar file format. Due to the difficulty in printing IE, we can also consider downloading the Excel file format when making and printing, so that the customer can adjust the format and print it in Excel. For t

". ToString (); Response.Write (""); } Response.Write (" "); } } #region connect Excel to read Excel data and return the DataSet data collection Connect Excel to read Excel

) { //Here you can write the method of inserting the database } } Catch(Exception ex) {Throw; } }View CodeFirst type: OLE DB PublicDataSet Importexcel (stringFilePath) {DataSet DS=NULL; OleDbConnection Conn; stringstrconn =string. Empty; stringSheetName =string. Empty; Try { //Ex