Creating a sine wave user interface in C#

hi , i want to create a user interface in which the user will enter the sampling rate and the frequency, the interface will plot the sine wave when pressed on a button accordingly using chart series.
simply what im trying to do is this code when written on matlab, 

1 fs= 96000;  
2 f= 1000;  
3 nCyl=1;  
4 t=0:1/fs:nCyl*1/f;  
5 x=sin(2*pi*f*t);  
6 plot(t,x)   

if you try to write this code on matlab a sine graph will appear,the thing i couldnt write as an equation in line 4, i want my user interface to give me the same sine graph after the user enters the sampling rate and frequency values.


thank you  

double phasecent = 0;
                    double samplerate = 96000;
                    double freq = 1000;
                    for (int i = 0; i < samplerate; i++)
                    {
                        double t = Math.Sin(freq * (2 * Math.PI) * (phasecent) / samplerate);
                        phasecent++;
                        double x = Math.Sin(2 *Math.PI*freq*t);
                        chart1.Series["b2"].Points.AddXY(x, t);
                    }