How do I use LAST_INSERT_ID() in WebMatrix

Question

I'm having trouble figuring out how to use LAST_INSERT_ID() for a MySQL database in WebMatrix. Can someone show me how to apply it to the code snippet below?

var clothingsize="";
if(IsPost){     
clothingsize =Request["clothingsize"];         

var SQLINSERT = "INSERT INTO fit1 (clothingsize) VALUES (@0)"; }

Answer 1

Here's the solution that works:

Right after this code on the signup page

db.Execute(SQLINSERT, fname, lname);

Add these 2 lines of code:

var customer_info_user_id = db.GetLastInsertId(); 
Response.Redirect("~/fit.cshtml?customer_info_user_id=" + customer_info_user_id);

Then insert the following into the subsequent pages:

Before the var to open the database

var customer_info_user_id = Request["customer_info_user_id"];

Add the id number that's been carried over into the INSERT functions. For example:

var SQLINSERT = "INSERT INTO fit (customer_info_user_id, clothingsize) VALUES (@0,@1)";                  
db.Execute(SQLINSERT, customer_info_user_id, clothingsize);

Carry over the id number to the next page

Response.Redirect("~/flatter.cshtml?customer_info_user_id=" + customer_info_user_id);

Thanks to @Mike Brind and the ASP.net forum for helping me figure this out :-)

Answer 2

Can I assume you're using the MySQL .NET Connector?

http://dev.mysql.com/downloads/connector/net

If so, here's a pretty simple example of what you're looking for:

http://forums.mysql.com/read.php?38,98672,98868#msg-98868

After executing your Insert-Command (C#, Connection is stored in conDBConnection):

> string strSQLSelect = "SELECT @@IDENTITY AS 'LastID'"; 
> MySqlCommand dbcSelect = new MySqlCommand(strSQLSelect,
> conDBConnection);  MySqlDataReader dbrSelect =
> dbcSelect.ExecuteReader(); 
> 
> dbrSelect.Read();  int intCounter =
> Int32.Parse(dbrSelect.GetValue(0).ToString()); 
> 
> dbrSelect.Dispose();  conDBConnection.Close();

Happy Coding!