MSSQL Assemblies and SQLBinary DataType

Question

I have a c# assembly which takes in a SQLBinary variable to decrypt...

[SqlProcedure(Name="Decrypt")]
public static SqlInt32 Decrypt(SqlBinary toDecrypt)
{
    return runQuery(toDecrypt);
}

// decrypt or encrypt is determined based on the datatype of argValue
private static SqlInt32 runQuery(object argValue)
{
    // create connection and command

       command.Parameters.Add("@argValue", SqlDbType.VarBinary, 1024).Value = (SqlBinary)argValue;

I include the (SqlBinary)argValue as a column in the select statement for simple debugging. It doesnt appear as if this SqlBinary value is properly being placed into the query.

argValue is being used like so: QueryString += "SELECT decryptbykey(@argValue);";

Whats being returned looks like a truncated version of (SqlBinary)argValue

Answer 1

Answer to my own question:

I had to cast the result of decryptbykey to a varchar ... duh! :)