dataset for data mining in excel

. ToString ()); HttpContext.Current.Response.End (); } Usage: dgtoexcel (DATAGRID1); 3, the data in the dataset to export Execl With the above idea, is to be exported in the information, output (Response) client, so that it can be exported. Then it is OK to export the data in the dataset, that is, to res

. data; using system. configuration; using system. web; using system. web. security; using system. web. ui; using system. web. UI. webcontrols; using system. web. UI. webcontrols. webparts; using system. web. UI. htmlcontrols; using system. data. sqlclient; using system. drawing; using system. io; using system. text; Public partial class default7: system. web. UI. page { sqlcommand sqlcom; stri

/// Select an Excel file to import data into the SQL database ///private void Btnchoose_click (object sender, EventArgs e) {using (openfiledialog Dialog = new OpenFileDialog ()) {DIALOG.M Ultiselect = true; if (dialog. ShowDialog () = = DialogResult.OK) {try {txtpath.text = dialog. FileName; } Catch {}}}}///// import data from

; Imex=1 '";//This connection can manipulate the. xls and. xlsx files (connection strings that support Excel2003 and Excel2007)//remark: "Hdr=yes;" Is that the first line of the Excel file is the column name instead of the data, "HDR=NO;" It's just the opposite of the front. //"Imex=1" if the data type in the column is inconsistent, the use of "imex=1" will avoid

Http://exceldatareader.codeplex.com/ Code Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> Filestream stream = File. Open (filepath, filemode. Open, fileaccess. Read ); // 1. reading from a binary Excel file ('97-2003 format; *. xls) Iexceldatareader excelreader = Excelreaderfactory. createbinaryreader (Stream ); // ... // 2. reading from a openxml

datagrid|excel| Program | data | show Import the data from the DataGrid into Excel and display the Excel application.Note Calling this method must have an Excel 2000 application installed, and assume that the DataGrid is bound to

In addition to directly accessing the cell to read data, you can also use OleDBAdapter to read Excel worksheet data. Note that it is worksheet data. This method can be used to obtain all worksheet datasets at a time. When using Excel 2003, note the single quotation marks in

Excel file is the same.Reading Excel files Public Dataset exceltods ( String Path) { String Strconn = " Provider = Microsoft. Jet. oledb.4.0; " + " Data Source = " + Path + " ; " + " Extended properties = Microsoft Excel 8.0; " ;Oledbconn

in the Excel file is the same.Reading Excel filesPublic dataset exceltods (string path){String strconn = "provider = Microsoft. Jet. oledb.4.0;" + "Data Source =" + path + ";" + "extended properties = Excel 8.0 ;";Oledbconnection conn = new oledbconnection (strconn );Conn.

C # add, delete, modify, and query Excel Data.First, create the exceldb.xlsx file and add two worksheets.Worksheet 1:UserInfo table, field: UserId, UserName, Age, Address, CreateTime.Worksheet 2:Order table, field: OrderNo, ProductName, Quantity, Money, SaleDate.1. Create an ExcelHelper. cs class and an Excel file processing class.Copy codeThe Code is as follows:Using System;Using System. Collections. Gener

Run the following command to obtain the latest Excel library version through nuget: PM> install-package excellibrary Use ASP. NET as follows: Encapsulate methods first: Public void exportexcel (string exclefilename, datatable DT) {httpcontext context = httpcontext. current; context. response. clear (); // httpcontext. current. response. charset = "gb2312"; // httpcontext. current. response. contentencoding = system. text. encoding. getencoding

Yesterday Ccrun just wrote an article to export the contents of ListView to a Word document and an Excel document, and today's writing program happened to use the function of exporting the data in DBGrid to office, and then write a brother version of the function. Dbgrid2word and Dbgrid2excel, respectively, to export the data in DBGrid to Word and

excel|visual|xml| data is generated from the dataset using XML in Excel 2002 or Excel 2003 This section describes how to create a DataSet object and how to use the WriteXml method to export the

name must be the same, meaning that if you want to read the SHEET1 data. You must be careful at the same time the written SQL query, since the selection * from [Sheet1 $] and select * FROM [Sheet1 $] is two different queries. Copy Code code as follows: Protected Sub Btnupload_click (ByVal sender as Object, ByVal e as System.EventArgs) Handles Btnupload.click If (Txtfilepath.hasfile) Then Dim Conn as OleDbConnection Dim cmd as OleDbCo

Recently, when you are importing Excel data, verify that the data is duplicated: 1. Do you want to verify that the Excel data itself is duplicated? 2. Does the data in Excel duplicate

Read the data in Excel into the dataset of the Target Structure Based on the configuration file, and process the merged cells. 1. class design: the Excel file must be read into the dataset according to the configuration. Using system;Using system.

Export table Excel Data in asp.net, asp. netexcel Step 1: reference the org. in2bits. MyXls assembly to the usage page. Step 2: foreground code Step 3: Click the event of the write button in the background of the aspx File Protected void LeadingOut_Click (object sender, EventArgs e){ DataSet ds = consumableBll. GetList ("IsDel = 'false'"); // table

When importing Excel Data recently, check whether the data is repeated: 1. Check whether Excel Data is repeated? 2. Is the data in Excel duplicated with the

, 2,8000) + ')', @ Fdlist = substring (@ fdlist, 2,8000)Exec @ err = sp_oamethod @ obj, 'execute ', @ out, @ SQLIf @ err Exec @ err = sp_oadestroy @ obj -- Import dataSet @ SQL = 'openrowset (''microsoft. JET. OLEDB.4.0 '', ''excel 5.0; HDR = YES; DATABASE = '+ @ path + @ fname + ''', [' + @ tbname + '$])' Exec ('insert into '+ @ SQL +' ('+ @ fdlist +') select' + @ fdlist + 'from' + @ tbname) Return Lberr:

There are 3 main ways to export database data in Excel: Using Excel.Application interface, OLE DB, HTML tabel tagsMethod 1--excel.application Interface:First, you need to Excel.dll this file to make sure that you have MS Office installed on your machine, in the Office installation directory (.. /microsoft office/office11/, the specific directory depends on its own installation) found in Excel.exe, and then