Example.cs

class Example
{
    const int VAGVAL1 = 1;
    const int VAGVAL2 = 2;
    const int VAGVAL3 = 3;
    
    readonly IDictionary<int, Action> _lookupMap;
    
    public Example() {
        _lookupMap = new Dictionary<int, Action>() {
            { VAGVAL1, Action1 },
            { VAGVAL2, Action2 },
            { VAGVAL3, Action3 }
        };
    }
    
    public void Metod(int vagvalsparameter) {    
        Action result = null;
        _lookupMap.TryGetValue(vagvalsparameter, out result);
        
        if (result != null) {
            result();
        }
    }
    
    private void Action1() {
        // do action 1
    } 
    
    private void Action2() {
        // do action 2
    } 
    
    private void Action3() {
        // do action 3
    } 

}