Updating Data in Excel using C#

Step 1: Create New Project.

Step 2: Add “System.Data” and “System.Data.OleDb” namespaces.

Step 3: The connection string for accessing Excel file is

“Provider = Microsoft.ACE.OLEDB.12.0; Data Source = [Excel File Path]; Extended Properties = “Excel 12.0 Xml;HDR=YES””

Step 4: Write the following code.

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Data;

using System.Data.OleDb;

namespace UpdatingDataInExcel

{

    class Program

    {

        static void Main(string[] args)

        {

            // Excel file path

            string excelFilePath = @"F:\Excel File.xlsx";

            // Connection string for accessing excel file

            string connectionString = string.Format(@"Provider=Microsoft.ACE.OLEDB.12.0; Data Source={0}; Extended Properties=""Excel 12.0 Xml;HDR=YES""", excelFilePath);

            using (OleDbConnection Connection = new OleDbConnection(connectionString))

            {

                try

                {

                    Connection.Open();

                    using (OleDbCommand Command = new OleDbCommand())

                    {

                        Command.Connection = Connection;

                        Command.CommandText = "UPDATE [Students$] SET [First Name] = 'Sharukh', [Last Name] = 'Khan', [Age] = '40' WHERE [First Name] = 'John'";

                        int i = Command.ExecuteNonQuery();

                        Console.WriteLine("Data Updated Successfully");

                    }

                    Console.ReadLine();

                }

                catch (OleDbException ex)

                {

                    Console.WriteLine("Message: " + ex.Message);

                    Console.ReadLine();

                }

                finally

                {

                    Connection.Close();

                }

            }

        }

    }

}