Passing datatable to a stored procedure

Question

I have a datatable created in C#.

using (DataTable dt = new DataTable())
{
    dt.Columns.Add(\"MetricId\", typeof(int));
    dt.Columns.Add(\"Descr\", typeo         


        

Answer 1

1. You need to define a Table Type that you want to pass in User-Defined Table Types in your database.

2. Then you need to add the parameter in your Stored Procedure to pass it in like this:

   @YourCustomTable AS [dbo].YourCustomTable Readonly,
   

3. Then, when you have your rows setup, call it like this:

   // Setup SP and Parameters
   command.CommandText = "YOUR STORED PROC NAME";
   command.Parameters.Clear();
   command.CommandType = CommandType.StoredProcedure;
   command.Parameters.AddWithValue("@someIdForParameter", someId);
   command.Parameters.AddWithValue("@YourCustomTable",dtCustomerFields).SqlDbType = SqlDbType.Structured;
   
   //Execute
   command.ExecuteNonQuery();
   

This should resolve your problem

Answer 2

We generally squirt the data into XML documents and pass the data to the database as an NTEXT parameter.

Answer 3

You can use a Table Valued Parameter as of SQL Server 2008 / .NET 3.5....

Check out the guide on MSDN

Also, as there other options available, I have a comparisonof 3 approaches of passing multiple values (single field) to a sproc (TVP vs XML vs CSV)