C# trigger event with arrays as parameter

FiveM Resource Development Discussion
1

Hey there,

i was trying to send arrays from the client side to the server, but it returned a cast exception on the server side:

Error invoking callback for event saveClothing: System.InvalidCastException: Could not cast event argument for saveClothing from List`1 to Int32[,]
  at CitizenFX.Core.EventHandlerEntry.<Invoke>g__ChangeType5_0 (System.Object value, System.Type type) [0x00020] in /src/code/client/clrcore/EventHandlerDictionary.cs:99
  at CitizenFX.Core.EventHandlerEntry+<Invoke>d__5.MoveNext () [0x000f4] in /src/code/client/clrcore/EventHandlerDictionary.cs:137

Heres my code as example:

Style playerStyle = Game.PlayerPed.Style;
PedComponent[] playerStyleComp = playerStyle.GetAllComponents();
PedProp[] playerStyleProp = playerStyle.GetAllProps();
int playerPedHash = Game.PlayerPed.Model.Hash;
Debug.WriteLine(playerPedHash.ToString());

int[,] pedComps = new int[playerStyleComp.Length, 3];
int[,] pedProps = new int[playerStyleProp.Length, 3];

for (int i = 0; i < playerStyleComp.Length; i++)
{
	PedComponents pedComp = StringToPedComponents(playerStyleComp[i].ToString());
	Debug.WriteLine("Cat: {0} | Index: {1} | Texture: {2}", (int)pedComp, playerStyleComp[i].Index, playerStyleComp[i].TextureIndex);
	pedComps[i, 0] = (int)pedComp;
	pedComps[i, 1] = playerStyleComp[i].Index;
	pedComps[i, 2] = playerStyleComp[i].TextureIndex;
}

Debug.WriteLine("--------------");

for (int i = 0; i < playerStyleProp.Length; i++)
{
	PedProps pedProp = StringToPedProps(playerStyleProp[i].ToString());
	Debug.WriteLine("Cat: {0} | Index: {1} | Texture: {2}", (int)pedProp, playerStyleProp[i].Index, playerStyleProp[i].TextureIndex);
	pedProps[i, 0] = (int)pedProp;
	pedProps[i, 1] = playerStyleProp[i].Index;
	pedProps[i, 2] = playerStyleProp[i].TextureIndex;
}

Debug.WriteLine("--------------");

TriggerServerEvent("saveClothing", playerPedHash, pedComps, pedProps);

EventHandlers["saveClothing"] += new Action<Player, int, int[,], int[,]>(saveClothing);

private void saveClothing([FromSource] Player caller, int modelHash, int[,] pedComps, int[,] pedProps)
{
	Debug.WriteLine("{0} -- {1} -- {2}//{3}", caller.Name, modelHash, pedComps.Length, pedProps.Length);
	DB.saveClothing(caller.Identifiers["steam"], modelHash);
}

Redid it with List<>:

EventHandlers["saveClothing"] += new Action<Player, int, List<int>, List<int>>(saveClothing);

private void saveClothing([FromSource] Player caller, int modelHash, List<int> pedComps, List<int> pedProps)
{
	Debug.WriteLine("{0} -- {1} -- {2}//{3}", caller.Name, modelHash, pedComps.Count, pedProps.Count);
	DB.saveClothing(caller.Identifiers["steam"], modelHash);
}

Error invoking callback for event saveClothing: System.InvalidCastException: Could not cast event argument for saveClothing from List`1 to List`1
  at CitizenFX.Core.EventHandlerEntry.<Invoke>g__ChangeType5_0 (System.Object value, System.Type type) [0x00020] in /src/code/client/clrcore/EventHandlerDictionary.cs:99
  at CitizenFX.Core.EventHandlerEntry+<Invoke>d__5.MoveNext () [0x000f4] in /src/code/client/clrcore/EventHandlerDictionary.cs:137

What is the propper way to do this?
I also tried to use json/xml serialization, but couldn’t get it even working on the client side.

2

@BlackFlash i etheir don’t know the proper way , but if you want a working way , you can simply send the info like your doing , and for the reception just declare it like as List of dynamic (even if you send a int[] , it’s gonna be convert as a List<>)

and when you receive your List of dynamic you just cast your value (not the entiere list) as int or string or whatever the object you send.

hope it will help you