Problems connecting to database in VB.NET <pre><code>Dim con As New System.Data.SqlClient.SqlConnection con.ConnectionString = "Server=iraq\\sqlexpress ; Database=stats ; Trusted_Connection=True ;" Dim com As New System.Data.SqlClient.SqlCommand com.CommandText = "insert into users values('" &amp; TextBox1.Text &amp; "','" &amp; TextBox2.Text &amp; "','" &amp; TextBox3.Text &amp; "')" com.Connection = con con.Open() com.ExecuteNonQuery() con.Close () </code></pre> <p>There are new events happen when i adjust the connection string</p> <pre><code>con.ConnectionString = "Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Documents and Settings\Administrator\My Documents\Visual Studio 2005\WebSites\WebSite2\App_Data\stats.mdf;Integrated Security=True;User Instance=True" </code></pre> <p>show me error with com.ExecuteNonQuery() </p> <p>any suggestion ? </p>