plot not starting from 0 mschart c#

I have written the following code to plot data from text file.The plot starts from 1 even when i use chart1.Series[0].Points.AddXY(j,data); (increment j from 0 )

I need the plot to start from 0.How can I achieve this.Thanks in advance. nameArray = buffer.Split(new string[] { ";","\n","\r"}, StringSplitOptions.RemoveEmptyEntries);

                for(int i=0;nameArray[i]!=null;i++)
                plotting(float.Parse(nameArray[i]));
            }

void plotting(float data)//, int t, int data1, int t1) {

        MethodInvoker action1 = delegate
        {


            chart1.Series[0].Points.Add(data);




            textBox2.Text = data.ToString();



        };

        this.BeginInvoke(action1);