C# problem ,database (SQL,Access)

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Hello,
i design a program in C# , i need to know how can i use data from data base .
such as : i have variable string s,how can i give this variable data from data base (Access or SQL) like name of employee .

Posted 18-Jun-13 23:25pm

loai_maane

Updated 18-Jun-13 23:26pm

v2

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OriginalGriff · Answer 1 · 2013-06-18T23:33:00

Try:

C#

using (SqlConnection con = new SqlConnection(strConnect))
    {
    con.Open();
    using (SqlCommand cmd = new SqlCommand("SELECT employeeName FROM myTable WHERE Id=@ID", con))
        {
        cmd.Parameters.AddWithValue("@ID", employeeID);
        using (SqlDataReader reader = cmd.ExecuteReader())
            {
            while (reader.Read())
                {
                string name = (string) reader["employeeName"];
                Console.WriteLine("ID: {0}\n    {1}", employeeId, name);
                }
            }
        }
    }

The_Leader · Answer 2 · 2013-06-18T23:35:00

Solution 2

Hi You should better first look over the web or search it in codeproject, but hope this link help you.
Beginners guide to accessing SQL Server through C#[^]

Posted 18-Jun-13 23:35pm

The_Leader

Comments

loai_maane 19-Jun-13 5:38am

thnx:))

samadhan_kshirsagar · Answer 3 · 2013-06-19T00:03:00

Solution 3

Hi visit this link
SQL Server 2008 - SqlConnection Connection String[^]

Posted 19-Jun-13 0:03am

samadhan_kshirsagar

Updated 19-Jun-13 19:39pm

v2

gagandeep.pratihar · Answer 4 · 2013-06-19T20:33:00

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace ConnectToDB
{
public class DBConnection
{
static void Main(string[] args)
{
System.Data.SqlClient.SqlConnection connection;
System.Data.SqlClient.SqlCommand command;
System.Data.SqlClient.SqlDataReader reader;
System.Data.SqlClient.SqlParameter param;
try
{
/* Dynamic Connection
Console.WriteLine("Enter DS Name:");
string dsname = Console.ReadLine();
Console.WriteLine("Enter DB Name:");
string dbname = Console.ReadLine();
Console.WriteLine("Enter Integrated Security:");
string iss = Console.ReadLine();
connection = new SqlConnection("Data Source="+dsname+";Initial Catalog="+dbname+";Integrated Security="+iss+""); */
connection = new SqlConnection("Data Source=GAGANDEEP;Initial Catalog=AdventureWorks;Integrated Security=True");
connection.Open();
param = new SqlParameter("@Param1", SqlDbType.Int,5);
Console.WriteLine("Connected To DB");
Console.WriteLine("Enter Location ID:");
string loc = Console.ReadLine();s
// command = new SqlCommand("select * from [AdventureWorks].[Production].[Location] where LocationID<@Param1", connection);
command = new SqlCommand("select * from [AdventureWorks].[Production].[Location] where LocationID<@Param1", connection);
command.Parameters.Add(param).Value=loc;
reader = command.ExecuteReader();
while (reader.Read())
{
Console.WriteLine("Location ID: " + reader["LocationID"].ToString()+"\t"+"Name: " + reader["Name"].ToString());
// Console.WriteLine("Name: " + reader["Name"].ToString());
//Console.WriteLine("Cost Rate: " + reader["Cost Rate"].ToString());
//Console.WriteLine("Availability: " + reader["Availability"].ToString());
//Console.WriteLine("Modified Date: " + reader["Modified Date"].ToString());
}
reader.Close();
}
catch (Exception ex)
{
Console.WriteLine("Failed to connect to data source"+ex.Message);
}
finally
{
Console.WriteLine("Connection Closed Automatically");
Console.ReadKey();
}
}
}
}

C# problem ,database (SQL,Access)

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