Save excel file in database using c# - sql-server

Question

I have an excel file. Now I need to save data of excel file in database. What is the simplest way to do that using c# with simple example? Thank in advance

Answer 1

This will do what you want.
private void button1_Click(object sender, EventArgs e)
{
System.Data.OleDb.OleDbConnection ExcelConnection = new System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\your_path\\Import_List.xls;Extended Properties=Excel 8.0;");
ExcelConnection.Open();
string expr = "SELECT * FROM [Sheet1$]";
OleDbCommand objCmdSelect = new OleDbCommand(expr, ExcelConnection);
OleDbDataReader objDR = null;
SqlConnection SQLconn = new SqlConnection();
string ConnString = "Data Source=Your_Database_Name;Initial Catalog=Table_Name;Trusted_Connection=True;";
SQLconn.ConnectionString = ConnString;
SQLconn.Open();
using (SqlBulkCopy bulkCopy = new SqlBulkCopy(SQLconn))
{
bulkCopy.DestinationTableName = "tblTest";
try
{
objDR = objCmdSelect.ExecuteReader();
bulkCopy.WriteToServer(objDR);
ExcelConnection.Close();
//objDR.Close()
SQLconn.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
}

Answer 2

To copy from a SQL Server table to an Excel file, try the following.
using System;
using System.Drawing;
using System.Windows.Forms;
using Excel = Microsoft.Office.Interop.Excel;
namespace WindowsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
try
{
System.Data.OleDb.OleDbConnection MyConnection ;
System.Data.OleDb.OleDbCommand myCommand = new System.Data.OleDb.OleDbCommand();
string sql = null;
MyConnection = new System.Data.OleDb.OleDbConnection("provider=Microsoft.Jet.OLEDB.4.0;Data Source='c:\\csharp.net-informations.xls';Extended Properties=Excel 8.0;");
MyConnection.Open();
myCommand.Connection = MyConnection;
sql = "Insert into [Sheet1$] (id,name) values('5','e')";
myCommand.CommandText = sql;
myCommand.ExecuteNonQuery();
MyConnection.Close();
}
catch (Exception ex)
{
MessageBox.Show (ex.ToString());
}
}
}
}
Or, with a 'Where' clause, you can have more control of the output.
using System;
using System.Drawing;
using System.Windows.Forms;
using Excel = Microsoft.Office.Interop.Excel;
namespace WindowsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
try
{
System.Data.OleDb.OleDbConnection MyConnection ;
System.Data.OleDb.OleDbCommand myCommand = new System.Data.OleDb.OleDbCommand();
string sql = null;
MyConnection = new System.Data.OleDb.OleDbConnection("provider=Microsoft.Jet.OLEDB.4.0;Data Source='c:\\csharp.net-informations.xls';Extended Properties=Excel 8.0;");
MyConnection.Open();
myCommand.Connection = MyConnection;
sql = "Update [Sheet1$] set name = 'New Name' where id=1";
myCommand.CommandText = sql;
myCommand.ExecuteNonQuery();
MyConnection.Close();
}
catch (Exception ex)
{
MessageBox.Show (ex.ToString());
}
}
}
}