Move application files to sub-folder

Application/Data/Extensions.cs

@@ -0,0 +1,155 @@
+using System;
+using System.Data;
+using System.Data.SqlServerCe;
+using System.Data.SqlTypes;
+
+namespace FeedCenter.Data
+{
+    public static class Extensions
+    {
+        #region SqlDateTime
+
+        public static SqlDateTime SqlDateTimeZero = new SqlDateTime(0, 0);
+
+        #endregion
+
+        #region DataSet
+
+        public static DataRow GetFirstDataRow(this DataSet dataSet)
+        {
+            // If we get no data set then return nothing
+            if (dataSet == null)
+                return null;
+
+            // If there were no tables returns then return nothing
+            if (dataSet.Tables.Count == 0)
+                return null;
+
+            // Get the first table
+            var firstTable = dataSet.Tables[0];
+
+            // If the table has no rows then return nothing
+            if (firstTable.Rows.Count == 0)
+                return null;
+
+            // Return the first row
+            return firstTable.Rows[0];
+        }
+
+        #endregion
+
+        #region SqlCeCommand
+
+        public static void SetStatement(this SqlCeCommand command, string statement, params object[] parameters)
+        {
+            // Create a new array to hold the updated parameters
+            var formattedParameters = new object[parameters.Length];
+
+            // Initialize our position
+            var position = 0;
+
+            // Loop over each parameter
+            foreach (var parameter in parameters)
+            {
+                // If the parameter is a DateTime then we need to reformat
+                if (parameter == null)
+                {
+                    // Use a explicit null value
+                    formattedParameters[position++] = "NULL";
+                }
+                else if (parameter is DateTime)
+                {
+                    // Cast the parameter back to a DateTime
+                    var dateTime = (DateTime) parameter;
+
+                    // Convert the DateTime to sortable format
+                    var formatted = dateTime.ToString("s");
+
+                    // Set into the formatted array
+                    formattedParameters[position++] = formatted;
+                }
+                else if (parameter is bool)
+                {
+                    // Convert the boolean to a number
+                    formattedParameters[position++] = Convert.ToInt32(parameter);
+                }
+                else if (parameter.GetType().IsEnum)
+                {
+                    // Convert the enum to a number
+                    formattedParameters[position++] = Convert.ToInt32(parameter);
+                }
+                else if (parameter is string)
+                {
+                    // Escape single quotes
+                    formattedParameters[position++] = (parameter as string).Replace("'", "''");
+                }
+                else
+                {
+                    // Just put the original value in
+                    formattedParameters[position++] = parameter;
+                }
+            }
+
+            // Build the full statement
+            command.CommandText = string.Format(statement, formattedParameters);
+        }
+
+        #endregion
+
+        #region SqlCeConnection
+
+        public static void ExecuteNonQuery(this SqlCeConnection connection, string query, params object[] parameters)
+        {
+            // Create the command object 
+            var command = connection.CreateCommand();
+
+            // Set the statement based on the query and parameters
+            command.SetStatement(query, parameters);
+
+            //Tracer.WriteLine("Executing SQL statement: {0}", command.CommandText);
+
+            // Execute the command
+            command.ExecuteNonQuery();
+        }
+
+        public static DataSet ExecuteDataSet(this SqlCeConnection connection, string query, params object[] parameters)
+        {
+            // Create the command object
+            var command = connection.CreateCommand();
+
+            // Set the statement based on the query and parameters
+            command.SetStatement(query, parameters);
+
+            // Create a new data adapter
+            using (var adapter = new SqlCeDataAdapter(command))
+            {
+                // Create the new data set
+                using (var dataSet = new DataSet())
+                {
+                    //Tracer.WriteLine("Executing SQL query: {0}", command.CommandText);
+
+                    // Fill the data set
+                    adapter.Fill(dataSet);
+
+                    return dataSet;
+                }
+            }
+        }
+
+        public static object ExecuteScalar(this SqlCeConnection connection, string query, params object[] parameters)
+        {
+            // Create the command object 
+            var command = connection.CreateCommand();
+
+            // Set the statement based on the query and parameters
+            command.SetStatement(query, parameters);
+
+            //Tracer.WriteLine("Executing SQL statement: {0}", command.CommandText);
+
+            // Execute the command
+            return command.ExecuteScalar();
+        }
+
+        #endregion
+    }
+}