如何使用handle Verbatim String Literals

我有下面的oracleCommand，想更改下面的内容，但有错误。。。除了我的+item+和+txtSrcUserID.Text.ToUpper（）+。在oracleCommand中。如何将它们添加到我的命令中？

原始

foreach (string Items in listBox39.Items)
                    {
                        using (OracleCommand crtCommand = new OracleCommand(@"SELECT  REGEXP_REPLACE ( REPLACE ( dbms_metadata.get_ddl ('PROCEDURE', 'HELL_'), '""USER1"".'),'^'s+', NULL, 1, 0, 'm') FROM dual", conn1))
                        {
                        }
                    }

我喜欢制作类似于下面的

foreach (string Items in listBox39.Items)
                        {
                            using (OracleCommand crtCommand = new OracleCommand(@"SELECT  REGEXP_REPLACE ( REPLACE ( dbms_metadata.get_ddl ('PROCEDURE', '+ Items +'), '"" + txtSrcUserID.Text.ToUpper() + "".'),'^'s+', NULL, 1, 0, 'm') FROM dual", conn1))
                            {
                            }
                        }

foreach (string Items in listBox39.Items)
{
    using (OracleCommand crtCommand = new OracleCommand(@"SELECT  REGEXP_REPLACE ( REPLACE ( dbms_metadata.get_ddl ('PROCEDURE', '" + Items + @"'), '""" + txtSrcUserID.Text.ToUpper() + @""".'),'^'s+', NULL, 1, 0, 'm') FROM dual", conn1))
    {
    }
}