使用 for 循环将初始化数组(索引 5 以后为 null)添加到图表控件

Question

>我已经初始化了一个二维数组，从索引 5 开始包含空值。我正在尝试将数组值添加到我的图表控件中。当我尝试将值显示到 Console.WriteLine 时，没有发生异常，但是当我添加到我的图表系列时，异常是"索引超出数组的范围"。有人可以帮助我吗？是因为图表控件的柱线有限吗？

try
{
    //females age range
    string[,] gAge = new string[10, 2];
    gAge[0, 0] = "F.13-17";
    gAge[0, 1] = yf.f1317.ToString();
    gAge[1, 0] = "F.18-24";
    gAge[1, 1] = yf.f1824.ToString();
    gAge[2, 0] = "M.25-34";
    gAge[2, 1] = yf.m2534.ToString();
    gAge[3, 0] = "M.13-17";
    gAge[3, 1] = yf.m1317.ToString();
    gAge[4, 0] = "M.18-24";
    gAge[4, 1] = yf.m1824.ToString();
    for (int i = 0; i < gAge.Length; i++)
    {
        if (gAge[i, 0] == null)
        {
            break;
        }
        else
        {
            Console.WriteLine(gAge[i, 0].ToString());
            string[] seriesArray = { gAge[i, 0].ToString() };
            Series series = this.chart1.Series.Add(seriesArray[i]);
        }
    }
}
catch (Exception ex)
{
    Console.WriteLine(ex.Message);
}

Answer 1

问题是你得到的是整个数组的长度，在这种情况下，gAge.Length等于 20，这是数组中的索引总数。它超出了第一个数组维度的边界。请尝试改用gAge.GetLength(0)。

Answer 2

 try
        {
            chart1.Series.Clear();
            chart1.Titles.Clear();
            chart1.Visible = true;
            //CODES HERE TO GET THE SELECTED PAGE FROM DROP DOWN LIST
            var fb = new FacebookClient(myToken.Default.token);
            var query = string.Format("SELECT metric, value FROM insights WHERE object_id=132414626916208 AND metric='page_fans_gender_age' AND period = period('lifetime') AND end_time = end_time_date('2013-01-18')");
            dynamic parameters = new ExpandoObject();
            parameters.q = query;
            var data = fb.Get<genderAgeDataII>("fql", parameters);
            genderAge yf = (genderAge)data.data[0].value;
            //females age range
            string[,] gAge = new string[10, 2];
            gAge[0, 0] = "F.13-17";
            gAge[0, 1] = yf.f1317.ToString();
            gAge[1, 0] = "F.18-24";
            gAge[1, 1] = yf.f1824.ToString();
            gAge[2, 0] = "M.25-34";
            gAge[2, 1] = yf.m2534.ToString();
            gAge[3, 0] = "M.13-17";
            gAge[3, 1] = yf.m1317.ToString();
            gAge[4, 0] = "M.18-24";
            gAge[4, 1] = yf.m1824.ToString();
            for (int i = 0; i < gAge.GetLength(0); i++)
            {
                if (gAge[i, 0] == null)
                {
                    break;
                }
                else
                {
                   string[] seriesArray = { gAge[i,0] };
                   // Add series.
                   for (int w = 0; w < seriesArray.Length; w++)
                   {
                       // Add series.
                       Series series = this.chart1.Series.Add(seriesArray[w]);
                       int[] pointsArray = new int[seriesArray.Length];
                       pointsArray[w] = Convert.ToInt32(gAge[i, 1]);
                       series.Points.Add(pointsArray[w]);
                   }

                   Console.WriteLine(gAge[i, 0].ToString());
                }
            }