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Inserting thousands of records into a MS SQL Database using List

Posted on 2013-01-29
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Last Modified: 2013-01-30
I have this class:
==============================================
   public class Anchor
        {
            public string url;
            public string title;          
        }
==============================================
I am gathering a bunch of data into

==============================================
public static List<Anchor> recListLinksAll = new List<Anchor>();
==============================================


Now by the time I am done recording everything into my recListLinksAll class I need to insert all of these records into a MS SQL database and here is what I am trying to do:

==============================================
conn.Open();
foreach (Anchor anchor in recListAnchorsAll)
            {              
                stSQL+= " INSERT INTO allAnchors ";
                stSQL += " VALUES(  ";
                stSQL += "'" + anchor.url + "',";
                stSQL += "'" + anchor.title.Replace("'", "''") + "'";
                stSQL += ") ";

                SqlCommand cmdInsert = new SqlCommand(stSQL, conn);

                try
                {
                    cmdInsert.ExecuteNonQuery();
                }
                catch (System.Net.WebException e)
                {
                    throw (e);
                }
             
            }
conn.Close();
==============================================

And what happens is it inserts about 4000 records and times out. Can anyone provide me with a more efficient way? Perhaps an XMLSerializer or something like that where I wouldn't have to insert each one at a time, but rather in bulk.
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Question by:vituxa
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7 Comments
 
LVL 42

Expert Comment

by:sedgwick
ID: 38832972
0
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 38833510
Providing you are using SQL Server 2008 you can use Table Valued Parameters with .NET.  Check out the following link and ask if you have any more questions:
http://msdn.microsoft.com/en-us/library/bb510489(v=sql.100).aspx
0
 
LVL 13

Accepted Solution

by:
jonnidip earned 2000 total points
ID: 38834341
You may use the SqlBulkCopy class:
DataTable dt = new DataTable();
dt.Columns.Add("url", typeof(String));
dt.Columns.Add("title", typeof(String));

// This is just to add a sample element for your Anchor object
List<Anchor> recListLinksAll = new List<Anchor>();
recListLinksAll.Add(new Anchor() { url = "test_url", title = "test_title" });
// end - sample element

foreach (Anchor a in recListLinksAll)
    dt.Rows.Add(new Object[2] { a.url, a.title });
            
SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(new SqlConnection("myConnectionString"), SqlBulkCopyOptions.TableLock, null);
sqlBulkCopy.DestinationTableName = "TableName";
sqlBulkCopy.WriteToServer(dt);

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Regards.
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LVL 1

Author Closing Comment

by:vituxa
ID: 38835188
Thank you! When I am looking for a solution -  I am not looking for links, I AM looking for sample code. Thank you again!
0
 
LVL 42

Expert Comment

by:sedgwick
ID: 38835198
the link has a full example code...
0
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 38835258
When I am looking for a solution -  I am not looking for links, I AM looking for sample code.
They pray tell why did you not say so?  All you did was ask "Can anyone provide me with a more efficient way?"  We did and you chose to use another approach and that is your choice.
0
 
LVL 1

Author Comment

by:vituxa
ID: 38835323
OK. My apologies. You are right. I will be more specific next time.
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