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Run an INSERT statement with parameters








    
 

using System;
using System.Data;
using System.Data.SqlClient;

class UsingParameters {
    public static void Main() {
        SqlConnection mySqlConnection = new SqlConnection("server=localhost;database=Northwind;uid=sa;pwd=sa");
        mySqlConnection.Open();
        SqlCommand mySqlCommand = mySqlConnection.CreateCommand();
        mySqlCommand.CommandText =
          "INSERT INTO Customers (" +
          "  CustomerID, CompanyName, ContactName" +
          ") VALUES (" +
          "  @CustomerID, @CompanyName, @ContactName" +
          ")";
        mySqlCommand.Parameters.Add("@CustomerID", SqlDbType.NChar, 5);
        mySqlCommand.Parameters.Add("@CompanyName", SqlDbType.NVarChar, 40);
        mySqlCommand.Parameters.Add("@ContactName", SqlDbType.NVarChar, 30);
        mySqlCommand.Parameters["@CustomerID"].Value = "J4COM";
        mySqlCommand.Parameters["@CompanyName"].Value = "J4 Company";
        mySqlCommand.Parameters["@ContactName"].IsNullable = true;
        mySqlCommand.Parameters["@ContactName"].Value = DBNull.Value;
        mySqlCommand.ExecuteNonQuery();
        Console.WriteLine("Successfully added row to Customers table");

        mySqlConnection.Close();
    }
}

 
    
   
  
   







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