sqlconnection

When you are using a SqlConnection to connect to a MS Sql Server, if the password has expired you will get a SqlException Number: 18487 or 18488. How can you change the user's password in code during the connection attempt? Use the static SqlConnection.ChangePassword() method. string original_dsn = "server=mysql.server.com,1433;database=pubdb;User Id={0};Password={1};" string dsn = String.Format(original_dsn, username, password); SqlConnection conn = new SqlConnection( dsn ); try { conn.Open(); } catch(SqlException e) { if (e.Number == 18487 || e.Number == 18488) SqlConnection.ChangePassword

I've been looking around for a solution to this issue and the only one that might provide a solution is the only one I haven't tried, because it involves changing system properties. I want to avoid that if I can. The Connection string is correct, but it still won't connect. The exception occurs on line 30, which is where the connection string is opened. conn.Open() Here is the Code: using System.Text; using System.Data.SqlClient; namespace My_Sql_Program { class Program { static void Main() { try { // Step 1: Create a SqlConnection Object to connect to the // SQL Northwind database.

Ok, I asked about this very error earlier this week and had some very helpful answers and without doubt things have drastically improved since I started following the suggestions. However, now I am using the 'correct', best practice method to access the database I still get this error on some functions and I cannot get it to disappear for that block. Here is my code: Public Shared Function doesBasketExist(ByVal baskethash As String) As Boolean Dim _r As Boolean Using db As New SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings("pitstopConnectionString").ConnectionString)

For example, I need to fill lots of DataTables with SQLDataAdapter's Fill() method: DataAdapter1.Fill(DataTable1); DataAdapter2.Fill(DataTable2); DataAdapter3.Fill(DataTable3); DataAdapter4.Fill(DataTable4); DataAdapter5.Fill(DataTable5); .... .... Even all the dataadapter objects use the same SQLConnection, each Fill method will open and close the connection unless the connection state is already open before the method call. What I want to know is how does unnecessarily opening and closing SQLConnections affect the performance of the application. How much does it need to scale to see the bad

Greetings, I would like to ask if creating Singleton to have only one active connection to db is a good idea. What i would like to do is: 1) I have a wcf service 2) wcf service gets data from db 3) i would like to create a singleton like this to have only one connection to db: private static PersistanceSingleton _Instance; public static PersistanceSingleton Instance { get { if (_Instance == null) { _Instance = new PersistanceSingleton(); } return _Instance; } } I know this is not an ideal singleton but i just wrote it for this post purpose. I would like to have some persistance repositories

My Azure Function App has a ConnectionString defined. I want to retrieve it from a C# function written in dotnet standard 2.0. I have tried adding System.Configuration.ConfigurationManager to the project.json and using var str = ConfigurationManager.ConnectionStrings["my string"].ConnectionString; but I get the error run.csx(24,15): error CS0103: The name 'ConfigurationManager' does not exist in the current context How do I access the connection string? Crazy Crab ConfigurationManager is not available in Azure Functions v2 .NET Standard projects. Azure FUnction v2 now uses ASPNET Core

I have this code down which I tried to make it Test SQL string connectivity, but I dont know how to handle the part with connection.Open = true would you please help me to solve this out? Thank you so much for your time. private void button1_Click(object sender, EventArgs e) { try { using (SqlConnection connection = new SqlConnection("Data Source='" + textBox1.Text + "';Initial Catalog='" + textBox2.Text + "';User ID='" + textBox3.Text + "';Password='" + textBox4.Text + "'")) { try { connection.Open(); if (connection.Open == true) // if connection.Open was successful { MessageBox.Show("You