Question

I have a simple stored procedure

CREATE PROCEDURE [dbo].[simple]

AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

    DECLARE @sql NVARCHAR(MAX)

    SELECT @sql = '
            SELECT TOP(5) * FROM aTable'
        PRINT @sql

    EXEC sp_executesql 
        @sql
END

And now, in C#, I want to get, if is possible, the @sql value from stored procedure (after it was executed).

I use Sql Server 2005.

How to do that in C#?

Answer 1

From the comments, you want access to @sql from C# code after calling the method. So:

CREATE PROCEDURE [dbo].[simple]
    @sql nvarchar(4000) = null OUTPUT
AS
BEGIN
    SET NOCOUNT ON;

    SELECT @sql = N'SELECT TOP(5) * FROM aTable'

    EXEC sp_executesql @sql
END

then simply in your ADO.NET code:

using(var cmd = connection.CreateCommand()) {
    cmd.CommandText = "dbo.simple";
    cmd.CommandType = CommandType.StoredProcedure;
    var sqlParam = cmd.Parameters.Add("sql", SqlDbType.NVarChar, 4000);
    sqlParam.Direction = ParameterDirection.Output;
    // TODO here: ExecuteNonQuery, ExecuteReader, etc, i.e. your existing code
    string sql = (string)sqlParam.Value;
}