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2012-08-15T18:21:30.127
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2012-08-15T18:21:30.127
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<p>I modified the code from the following link to be more efficient and used it in my application. It is quite convenient because you can just put it in a partial class on top of your current autogenerated class. Instead of <code>InsertOnSubmit</code> add entities to a list, and instead of <code>SubmitChanges</code> call <code>YourDataContext.BulkInsertAll(list)</code>.</p> <p><a href="http://www.codeproject.com/Tips/297582/Using-bulk-insert-with-your-linq-to-sql-datacontex">http://www.codeproject.com/Tips/297582/Using-bulk-insert-with-your-linq-to-sql-datacontex</a></p> <pre><code>partial void OnCreated() { CommandTimeout = 5 * 60; } public void BulkInsertAll<T>(IEnumerable<T> entities) { using( var conn = new SqlConnection(Connection.ConnectionString)) { conn.Open(); Type t = typeof(T); var tableAttribute = (TableAttribute)t.GetCustomAttributes( typeof(TableAttribute), false).Single(); var bulkCopy = new SqlBulkCopy(conn) { DestinationTableName = tableAttribute.Name }; var properties = t.GetProperties().Where(EventTypeFilter).ToArray(); var table = new DataTable(); foreach (var property in properties) { Type propertyType = property.PropertyType; if (propertyType.IsGenericType && propertyType.GetGenericTypeDefinition() == typeof(Nullable<>)) { propertyType = Nullable.GetUnderlyingType(propertyType); } table.Columns.Add(new DataColumn(property.Name, propertyType)); } foreach (var entity in entities) { table.Rows.Add( properties.Select( property => property.GetValue(entity, null) ?? DBNull.Value ).ToArray()); } bulkCopy.WriteToServer(table); } } private bool EventTypeFilter(System.Reflection.PropertyInfo p) { var attribute = Attribute.GetCustomAttribute(p, typeof(AssociationAttribute)) as AssociationAttribute; if (attribute == null) return true; if (attribute.IsForeignKey == false) return true; return false; } </code></pre>
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