Csharp/C Sharp/Database ADO.net/Insert

Bind parameters to insert command

using System;
using System.Data;
using System.Data.SqlClient;
   class PropagateAdds{
      static void Main() {
         string connString = "server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI";
         string qry = @"select * from employee";
         string upd = @"insert into employee(firstname,lastname)values(@firstname,@lastname)";
         SqlConnection conn = new SqlConnection(connString);
         try{
            SqlDataAdapter da = new SqlDataAdapter();
            da.SelectCommand = new SqlCommand(qry, conn);
            DataSet ds = new DataSet();   
            da.Fill(ds, "employee");
            DataTable dt = ds.Tables["employee"];
            DataRow newRow = dt.NewRow();
            newRow["firstname"] = "R";
            newRow["lastname"] = "B";
            dt.Rows.Add(newRow);
            foreach (DataRow row in dt.Rows){
               Console.WriteLine(
                  "{0} {1}",
                  row["firstname"].ToString().PadRight(15),
                  row["lastname"].ToString().PadLeft(25));
            }
            // Update employees
            SqlCommand cmd = new SqlCommand(upd, conn);
            cmd.Parameters.Add("@firstname", SqlDbType.NVarChar, 10, "firstname");
            cmd.Parameters.Add("@lastname",  SqlDbType.NVarChar, 20, "lastname");
            da.InsertCommand = cmd;
            da.Update(ds, "employee");
         } catch(Exception e) {
            Console.WriteLine("Error: " + e);
         } finally {
            conn.Close();
         }
      }  
   }

Insert Data Using SqlCommandBuilder

/*
 * C# Programmers Pocket Consultant
 * Author: Gregory S. MacBeth
 * Email: gmacbeth@comporium.net
 * Create Date: June 27, 2003
 * Last Modified Date:
 * Version: 1
 */
using System;
using System.Data;
using System.Data.SqlClient;
namespace Client.Chapter_13___ADO.NET
{
    public class InsertingDataUsingCommandBuilder
    {
        static void Main(string[] args)
        {
            SqlConnection MyConnection = new SqlConnection(@"Data Source=(local); Initial Catalog = CaseManager; Integrated Security=true");
            SqlDataAdapter MyDataAdapter = new SqlDataAdapter("SELECT ID, Contact, Email FROM Test", MyConnection);
            SqlCommandBuilder MyCmd = new SqlCommandBuilder(MyDataAdapter);
            DataSet MyDataSet = new DataSet();
            MyDataAdapter.Fill(MyDataSet);
            DataRow MyRow = MyDataSet.Tables[0].NewRow();
            MyRow["ID"] = 200;
            MyRow["Contact"] = "Greg";
            MyRow["Email"] = "MacBeth";
            MyDataSet.Tables[0].Rows.Add(MyRow);
            MyDataAdapter.Update(MyDataSet);
        }
    }
}

Inserte Data Using SQL Statements

/*
 * C# Programmers Pocket Consultant
 * Author: Gregory S. MacBeth
 * Email: gmacbeth@comporium.net
 * Create Date: June 27, 2003
 * Last Modified Date:
 * Version: 1
 */
using System;
using System.Data;
using System.Data.SqlClient;
namespace Client.Chapter_13___ADO.NET
{
    
    public class InsertingDataUsingSQLStatements
    {
        static void Main(string[] args)
        {
            SqlConnection MyConnection = new SqlConnection(@"Data Source=(local); Initial Catalog = CaseManager; Integrated Security=true");
            MyConnection.Open();
            String MyString = @"INSERT INTO Test(ID, Contact, Email) VALUES(2, "Greg", "MacBeth")";
            SqlCommand MyCmd = new SqlCommand(MyString, MyConnection);
            MyCmd.ExecuteScalar();
            MyConnection.Close();
        }
    }
}

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.rumandText =
          "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();
    }
}

Use SQL command to insert data into database table

using System;
using System.Data;
using System.Data.SqlClient;
   class CommandExampleCreateDb
   {
      static void Main() 
      {
         SqlConnection thisConnection = new SqlConnection("server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI");
         SqlCommand nonqueryCommand = thisConnection.CreateCommand();
         try 
         {
            thisConnection.Open();
            nonqueryCommand.rumandText = "CREATE DATABASE MyDb";
            Console.WriteLine(nonqueryCommand.rumandText);
            nonqueryCommand.ExecuteNonQuery();
            Console.WriteLine("Database created, now switching");
            thisConnection.ChangeDatabase("MyDb");
            nonqueryCommand.rumandText = "CREATE TABLE MynfexTable (COL1 integer)";
            Console.WriteLine(nonqueryCommand.rumandText);
            Console.WriteLine("Number of Rows Affected is: {0}", nonqueryCommand.ExecuteNonQuery());
            nonqueryCommand.rumandText = "INSERT INTO MynfexTable VALUES (99)";
            Console.WriteLine(nonqueryCommand.rumandText);
            Console.WriteLine("Number of Rows Affected is: {0}", nonqueryCommand.ExecuteNonQuery());
         
         } catch (SqlException ex) {
         
            Console.WriteLine(ex.ToString());
         
         } finally {  
         
            thisConnection.Close();
            Console.WriteLine("Connection Closed.");
         
         }
      }
   }