Csharp/CSharp Tutorial/ADO.Net/SqlCommand Update

Execute NonQuery Example: update

using System;
using System.Data;            // Use ADO.NET namespace
using System.Data.SqlClient;  // Use SQL Server data provider namespace
using System.Collections.Generic;
using System.Text;
class Program {
    static void Main(string[] args) {
        SqlConnection thisConnection = new SqlConnection(
             @"Server=(local)\sqlexpress;Integrated Security=True;" +
             "Database=northwind");
        thisConnection.Open();
        SqlCommand thisCommand = thisConnection.CreateCommand();
        thisCommand.rumandText = "UPDATE Products SET " +
             "UnitPrice=UnitPrice*1.05 WHERE SupplierId=12";
        int rowsAffected = thisCommand.ExecuteNonQuery();
        Console.WriteLine("Rows Updated = {0}", rowsAffected);
        thisConnection.Close();
    }
}

Inserts (create) a new table

using System;
using System.Data.SqlClient;
public class UpdateRecord
{
    public static void Main() 
    {
        string connectionString = "Data Source=localhost;" +
                      "Initial Catalog=Northwind;Integrated Security=SSPI";
        string SQL = "CREATE TABLE Users (UserName nvarchar(20), Password nvarchar(20) )";
        SqlConnection con = new SqlConnection(connectionString);
        SqlCommand cmd = new SqlCommand(SQL, con);
        con.Open();
        int rowsAffected = cmd.ExecuteNonQuery();
        con.Close();
        Console.WriteLine(rowsAffected);
    }
}

Updating Data Using Sql Statements

using System;
using System.Data;
using System.Data.SqlClient;
class MainClass
{
  static void Main(string[] args)
  {
    SqlConnection MyConnection = new SqlConnection("server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI;");
    MyConnection.Open();
    String MyString = "UPDATE Employee SET FirstName = "Lee"";
    SqlCommand MyCmd = new SqlCommand(MyString, MyConnection);
    MyCmd.ExecuteScalar();
    MyConnection.Close();
  }
}