Question

I am trying to pass a table-value parameter to a stored procedure, but I keep getting an exception (see below).

SqlCommand c = new SqlCommand("getPermittedUsers", myConn) { CommandType = CommandType.StoredProcedure };

c.Parameters.AddWithValue("@intNotifyingUserId", notifyingUserId);
c.Parameters.AddWithValue("@tSelectedPdfIds", sharedPdfs).SqlDbType = SqlDbType.Structured;

SqlDataReader dr = c.ExecuteReader();

The type is defined on the server like this:

CREATE TYPE [dbo].[IdList] AS TABLE(
    [Id] [int] NOT NULL
)

I have tried passing sharedPdfs as a List<int>, and IQueryable<int>, but keep getting the following exception:

Object must implement IConvertible.

Anyone know what I am doing wrong? The documentation implies that I should be able to pass a list as a TVP but doesn’t give any examples.

Thank you.

Answer 1

You can pass the parameter as a DataTable, IEnumerable<SqlDataRecord>, or DbDataReader.