Prog Change and set Midi Channel

[Lenvdb64]

Hi all
I am using the Patternbuilder to create a Drum pattern.
All the work will be done using the General Midi Drums on Midi Channel 10.
As it is 0-based I will need to select Channel 10 as Channel = 9:
But I cannot see how to do this in PatternBuilder

My Code so far:

` private static Pattern CreatePattern() 
 {
     try
     {
         var pB = new PatternBuilder();            
       
 //How to set Midi Ch 10 ??
 pB.ControlChange((SevenBitNumber)1, (SevenBitNumber)1);
         
//set PC to select Prog 0 
pB.ProgramChange((SevenBitNumber)0);`

I am sure many of you have done this already.
Please could you kindly share how you did this?

[Lenvdb64]

Actually - no longer an issue

Here is my code I used:

using (var dev = OutputDevice.GetByName("Microsoft GS Wavetable Synth"))
{
    Melanchall.DryWetMidi.Common.SevenBitNumber channel = (Melanchall.DryWetMidi.Common.SevenBitNumber)9;

    CreateMidiFile();
}

[melanchall]

@Lenvdb64 Hi,

Pattern is just a set of actions. Those actions will be materialized on ToFile or TrackChunk call. Please see the Pattern article:

Pattern can be then saved to MidiFile (via ToFile method) or TrackChunk (via ToTrackChunk method). You need to provide a tempo map. Also you can optionally specify the channel that should be set to events. The default channel is 0.

So you specify a channel by passing it as the parameter to those methods.

As for your code:

using (var dev = OutputDevice.GetByName("Microsoft GS Wavetable Synth"))
{
    Melanchall.DryWetMidi.Common.SevenBitNumber channel = (Melanchall.DryWetMidi.Common.SevenBitNumber)9;

    CreateMidiFile();
}

it's super strange:

1. channel variable is not used;
2. dev is not used;
3. you work with the device in using block which is can cause problems (after the program leaves the block, the device will not exist and your attempts to interact with it can broke the program).

Honestly I don't understand what you want to say with this code :-) But I'm glad you've solved the problem.

[Lenvdb64]

Thank you Maxim
Yes - CreateMidifile does a few of these steps and calls CreatePattern

public static void CreateMidiFile()
 {
     // Create an empty MIDI file
     var tempoMap = TempoMap.Create(Tempo.FromBeatsPerMinute(giBPM));
     var midiFile = new MidiFile();
     midiFile.ReplaceTempoMap(tempoMap);
     //TODO: ProgramChangeEvent
     //TODO: Set to Channel 10 (9)
     //TODO: Set to GM Drums Program 0

     var pBMain = CreatePattern();
     midiFile = pBMain.ToFile(tempoMap); 
     midiFile.Write("C:\\Users\\lenvd\\Documents\\VSProjects\\MyMidiPanel2\\Ptn1_4_4_8.mid");
 }

Then CreatePattern does the actual Pattern in a PatternBuilder...

So From a Logical view all happens within this Codeblock.
But yes - I see that the Channel is not passed or set as I still only hear the Grand Piano from Channel 0 on the GS synth.

Moooo...

[melanchall]

@Lenvdb64 From my answer you know how to set a channel now :-)

[CIRCE-EYES]

Hello Len! Greetings from Spain.
I see that you are making a kind of beatbox drums, using Maxim Drywetmidi's wonderful library.
A while ago I did something similar using a datagrid as cells, it looked cool, but I'm looking for something more similar to a piano roll, I did it in vb.net. Maybe my example and other apps that I have made to learn the library can help you drywetmidi, Maxim is a very nice guy and helped me to a certain extent, first he doesn't know vb.net, and second he can't answer as many questions as I had.
I would really like to see your progress on the project, and if you share it, to be able to use it.
I repeat, I'm looking for someone who dares to do a simple piano roll project. Greetings !!!!!

Have a look here : https://github.com/CIRCE-EYES/Roll-midi-notes-using-a-Datagridview-object-Vstudio

[Lenvdb64]

Hello!
I have decided to use C# and have a Panel and use the Paint Event to draw a Midi Grid step editor, having rows and columns.
Behind the Panel I have a List Object that holds Boolean values for when the grid cell is selected or not.
It sounds rather elaborate but I got the idea from "Honey the Code Witch" who has a similar project but used buttons instead of a Panel, but also with a List object holding Boolean values for the cells selected.

I obviously have a few issues as I have only used this Lib for a week now....

1. I need to select a Channel 10 for General Midi to access the GM Drumkit.
2. I loop through the underlying Boolean List to collect all the Notes selected and now struggle to translate these into Note Events on the DryWet Library and then write it as a Midi file.

Creating the Midi file is going well, in principle, and later I will add a proper FileSave dialog for it.
Notes and being generated but as stated - It is not selecting the GM Drum kit on Channel 10.
I am currently using a PatternBuilder and I build a Pattern, which can be saved to a Midi File.
When I play it back it is just Piano Notes.
As a standard Cubase has set the PPQN (Pixels per Quarter Note - to 960
and Ticks per Beat is also 960
Most Libs do not quite use this as a standard.

This is what I have so far.
I am hoping to use the C# VST2.Net lib to publish this as a VST to use with Monster Drum Kits....
I will take a look at your VB Code - Thank you for sharing!

[melanchall]

@Lenvdb64 You wrote:

Notes and being generated but as stated - It is not selecting the GM Drum kit on Channel 10.

Did you read my first answer? I've already explained how to set a channel. You don't know how to pass a parameter to ToFile method?

var pBMain = CreatePattern();
midiFile = pBMain.ToFile(tempoMap, (FourBitNumber)9);