Question

well, the question is clear i hope, the code is this:

string sql = "delete from @tabelnaam";
            SqlCommand sc = new SqlCommand();

                sc.Connection = getConnection();
                sc.CommandType = CommandType.Text;
                sc.CommandText = sql;
                SqlParameter param = new SqlParameter();

                param.Direction = ParameterDirection.Input;
                param.ParameterName = "@tabelnaam";
                param.Value  = tableName;

                sc.Parameters.Add(param);
                OpenConnection(sc);
                sc.ExecuteScalar();

tableName is supplied to this function.

I get the exception:

Must declare the table variable @tabelnaam

Answer 1

Make to changes

rather than using paramter use this

string sql = string.format( "delete from {0}",tableName);

make use of executenonquery intead of ExecuteScalar

sc.ExecuteNonQuery();