Question

im pretty much a beginner to using ASP.net and linq to sql but what im trying to do is update a column of a table based on a variable. at the momment i have

Dim db As New sqldcDataContext
Dim update As tableName = (From i in db.tableNames _ Select i)

i think this selects everything, how could i have two variables, one to store what table to update and the other what column. is this possible?

edit: sorry for being unclear
im trying to make this as dynamic as possible so i dont have to type in the exact table/col names. something like this but in the linq to sql syntax.

mysql_query("SELECT * FROM ". $table ." WHERE `" . $column . "` = \"" . $data ."\");

Answer 1

Your question is not entirely clear, and I’m not sure what you are trying to achieve. However, updates are generally done in the following manner with LINQ:

Example assuming you want to update “Customer” table, setting entire column “LastLoginDate” to today. You will also need to have “dragged” this table from “Server Explorer” to your datacontext designer.

Dim db as new sqldcDataContext()
dim customers = (from c in db.Customers select c)
For each customer in customers
    customer.LastLoginDate = DateTime.Now();
Next

db.SubmitChanges()