DataContext.ExecuteCommand Method in entity framework

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2

Syntax

public int ExecuteCommand(
	string command,
	params object[] parameters
)

This method is a pass-through mechanism for cases where LINQ to SQL does not adequately provide for a particular scenario.

The syntax for the command is almost the same as the syntax used to create an ADO.NET DataCommand. The only difference is in how the parameters are specified. Specifically, you specify parameters by enclosing them in braces ({…}) and enumerate them starting from 0. The parameter is associated with the equally numbered object in the parameters array.

ExecuteQuery and ExecuteCommand allow you to specify a variable number of arguments for parameter substitution. For example, you can specify the parameters when invoking ExecuteQuery<TResult>:

db.ExecuteQuery<Customer>("select * from dbo.Customers where City = {0}", "London");

And, another example:

db.ExecuteCommand("UPDATE Products SET QuantityPerUnit = {0} WHERE ProductID = {1}", "24 boxes", 5)

 

The following example opens a connection and passes a SQL UPDATE command to the SQL engine.

db.ExecuteCommand("UPDATE Products SET UnitPrice = UnitPrice + 1.00");

 

GCCustContext.ExecuteCommand(@”DELETE FROM InterfaceADT WHERE InterfaceADTId = {0}”, NewId.ToString());

 

swq1

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