Added testing file for database connection. Remember to add reference for DLL to project!

Snippets/Database Connection.cs

@@ -0,0 +1,75 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+using System.Data.SqlServerCe;
+using System.IO;
+
+namespace Local_Database_Connection
+{ 
+    public partial class Form1 : Form
+    {
+        public Form1()
+        {
+            InitializeComponent();
+        }
+
+        private void Form1_Load(object sender, EventArgs e)
+        {
+            SqlCeConnection conn = null;
+            try
+            {
+                if (File.Exists("Test.sdf")) { File.Delete("Test.sdf"); }
+
+                SqlCeEngine engine = new SqlCeEngine("Data Source = Test.sdf");
+                engine.CreateDatabase();
+
+                conn = new SqlCeConnection("Data Source = Test.sdf");
+                conn.Open();
+
+                SqlCeCommand cmd = conn.CreateCommand();
+
+                cmd.CommandText = "CREATE TABLE TestTbl (col1 INT PRIMARY KEY, col2 NTEXT, col3 MONEY)";
+
+                cmd.ExecuteNonQuery();
+
+                cmd.CommandText = "INSERT INTO TestTbl (col1, col2, col3) VALUES (0, 'abc', 15.66)";
+
+                cmd.ExecuteNonQuery();
+
+                cmd.CommandText = "INSERT INTO TestTbl (col1, col2, col3) VALUES (?, ?, ?)";
+
+                cmd.Parameters.Add(new SqlCeParameter("p1", SqlDbType.Int));
+                cmd.Parameters.Add(new SqlCeParameter("p2", SqlDbType.NText));
+                cmd.Parameters.Add(new SqlCeParameter("p3", SqlDbType.Money));
+
+                cmd.Parameters["p2"].Size = 50;
+
+                cmd.Prepare();
+
+                cmd.Parameters["p1"].Value = 1;
+                cmd.Parameters["p2"].Value = "abc";
+                cmd.Parameters["p3"].Value = 15.66;
+                cmd.ExecuteNonQuery();
+
+                cmd.Parameters.Clear();
+
+                cmd.CommandText = "SELECT * From TestTbl";
+                SqlCeDataReader rdr = cmd.ExecuteReader();
+                while (rdr.Read())
+                {
+                    MessageBox.Show(" col1 = " + rdr.GetInt32(0) +
+                     " col2 = " + rdr.GetString(1) +
+                     " col3 = " + rdr.GetSqlMoney(2));
+                }
+            }
+            catch (Exception err) { MessageBox.Show("ERROR! : " + err.ToString()); }
+            finally { conn.Close(); }
+        }
+    }
+}