C#

string excelConnectionString = string.Format("Provider=Microsoft.Jet.OLEDB.4.0; data source={0}; Extended Properties=Excel 8.0;", txtExcel.Text);

OleDbConnection con = new OleDbConnection(excelConnectionString);
con.Open();
OleDbDataAdapter da = new OleDbDataAdapter("select * from ["+ txtFY.Text +"$]", con);
fy.Text = txtFY.Text;

DataTable dt = new DataTable();
da.Fill(dt);

con.Close();

dataGridView1.DataSource = dt;
dataGridView1.Refresh();

System.Diagnostics.ProcessStartInfo pInfo = new System.Diagnostics.ProcessStartInfo(strCmd, strArgs);<br />
pInfo.Verb = "open";<br />
pInfo.ErrorDialog = true;<br />
pInfo.WorkingDirectory = strDir;<br />
System.Diagnostics.Process.Start(pInfo);

public void Connect()
        {
            this.han = new SqlConnection(@"Data Source=C:\Users\יהב\Documents\Visual Studio 2008\Projects\ADOtutorial\ADOtutorial\my_database.sdf;Persist Security Info=True;Application Name=ConnectDB");
            Console.WriteLine(this.han.ConnectionString);
            try
            {
                this.han.Open();
            }
            catch (NullReferenceException e)
            {
                Console.WriteLine(e);
            }
            catch (SqlException e)
            {
                Console.WriteLine(e);
            }
        }

Data Source=C:\Users\יהב\Documents\Visual Studio 2008\Projects\ADOtutorial\ADOtu
torial\my_database.sdf;Persist Security Info=True;Application Name=ConnectDB
System.Data.SqlClient.SqlException: אירעה שגיאה הקשורה לרשת או שגיאה ספציפית למו
פע במהלך יצירת חיבור ל- SQL Server.  השרת לא נמצא או שאינו נגיש. ודא כי שם המופע
 נכון וכי SQL Server מוגדר לאפשר חיבורים מרוחקים. (provider: ממשקי רשת של SQL, e
rror: 26 - שגיאה באיתור שרת/מופע שצוין)
   ב-  System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exceptio
n, Boolean breakConnection)
   ב-  System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateOb
ject stateObj)
   ב-  System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInterna
lConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boo
lean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection
 owningObject)
   ב-  System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo
 serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire
, SqlConnection owningObject)
   ב-  System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String hos
t, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObjec
t, SqlConnectionString connectionOptions, Int64 timerStart)
   ב-  System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnect
ion owningObject, SqlConnectionString connectionOptions, String newPassword, Boo
lean redirectedUserInstance)
   ב-  System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIden
tity identity, SqlConnectionString connectionOptions, Object providerInfo, Strin
g newPassword, SqlConnection owningObject, Boolean redirectedUserInstance)
   ב-  System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionO
ptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnectio
n owningConnection)
   ב-  System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbCon
nection owningConnection, DbConnectionPool pool, DbConnectionOptions options)
   ב-  System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection ownin
gObject)
   ב-  System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection
owningObject)
   ב-  System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owni
ngObject)
   ב-  System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection o
wningConnection)
   ב-  System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection o
uterConnection, DbConnectionFactory connectionFactory)
   ב-  System.Data.SqlClient.SqlConnection.Open()
   ב-  ADOtutorial.Database_Driver.Connect() ב- C:\Users\יהב\Documents\Visual St
udio 2008\Projects\ADOtutorial\ADOtutorial\Database_Driver.cs:שורה 46
Press any key to continue . . .

There was an error related to the network or specific error Lmo <br />
According to the connection during the creation - SQL Server. Server not found or is not accessible. Verify that the instance name <br />
  Correct and that SQL Server is configured to allow remote connections. (provider: Web interface of SQL, e <br />
rror: 26 - Error locating server / instance specified)<br />