dataset for data mining in excel

! = ". Xls "){Sargs = @ " ";Page. response. Write (sargs );Return NULL;}Dataset DS = new dataset ();Try{Oledbconnection conn = new oledbconnection ("provider = Microsoft. Jet. oledb.4.0; extended properties = Excel 8.0; Data Source =" + filepath );If (conn. State! = Connectionstate. open){Conn. open ();}Else{Sargs = @

. getinsertcommand (); Dataset DS = New Dataset (); Sdatraintype. Fill (DS, "Traintype" ); Sdatraintrip. Fill (DS, "Traintrip" ); Sdareachstation. Fill (DS, "Reachstation" ); Datatable Traintype = Ds. Tables [ "Traintype" ]; Datatable Traintrip = Ds. Tables [ "Traintrip" ]; Datatable Reachstation = Ds. Tables [ "Reachstation" ]; // Excel

// Test. Import Sheet 1 in Excel to private void run_click (Object sender, eventargs e) {system. windows. forms. openfiledialog FD = new openfiledialog (); If (FD. showdialog () = dialogresult. OK) {dataset DS = transferdata (FD. filename, "sheet1"); addbatch (Ds. tables [0]) ;}} public dataset transferdata (string excelfile, string sheetname) {

Authentication3. data exchange is also beneficial. Implementation Method:Sqlconnection conn = new sqlconnection (system. configuration. configurationsettings. deleettings ["conn"]);Sqldataadapter da = new sqldataadapter ("select * From tb1", Conn );Dataset DS = new dataset ();Da. Fill (DS, "Table1 ");Datatable dt = Ds. Tables ["Table1"];Stringwriter Sw = new str

. Identity Authentication3. data exchange is also beneficial. Implementation Method:Sqlconnection conn = new sqlconnection (system. configuration. configurationsettings. deleettings ["conn"]);Sqldataadapter da = new sqldataadapter ("select * From tb1", Conn );Dataset DS = new dataset ();Da. Fill (DS, "Table1 ");Datatable dt = Ds. Tables ["Table1"];Stringwriter S

If you import data to SqlServer in Excel, the system prompts: too many fields are defined? Source code: fileName file name savePath path DataSetdsnull; try {stringmyStringProviderMicrosoft. Jet. OLEDB.4.0; DataSource + savePath + fileName +; ExtendedPropertiesExcel If you import data to SqlServer in Excel, the system p

){DropDownList2.Items. Add (dr [2]. ToString ());}This. Label1.Text = "\\\\ localhost \\ folder \\" + fileName; // this. AttachmentFile. Value. ToString ();Conn. Close ();}If (this. Label1.Text. ToString ()! = "" This. DropDownList2.SelectedValue! = "") // This. DropDownList1.SelectedValue. ToString ()! = "All"{// Bind to the gridviewGridView1.DataSource = createDataSource (DropDownList2.SelectedValue. ToString (), this. Label1.Text. ToString (); //, this. DropDownList1.SelectedValue. ToString

(); //Querying data in sheet string strSQL = "Select * FROM ["+ SheetName +"] "; OleDbDataAdapter da = new OleDbDataAdapter (strSQL, conn); DataSet ds = new DataSet (); da. Fill (ds, table); dt = ds. Tables[0]; return DT; } catch (Exception exc) { throw exc; } finally { Conn. Close (); Conn. Dispose (); } } // / Import

The connection string of Excel2007 is different from that of Excel2003. DataTable tbSheetName = connection. GetOleDbSchemaTable (OleDbSchemaGuid. Tables, null );Used to obtain the sheet name. using System;using System.IO;using System.Collections.Generic;using System.Linq;using System.Text;using System.Data;using System.Data.OleDb; namespace ExcelDataReader{ public class ExcelDataReader { private static string BuildConnectionString(string filepath) { if (!File.Exist