如何将C#中datagridview中数据用柱状图形式表现?

[baidu_34817953]

 public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        List<Work> list = new List<Work>();

        private void Form1_Load(object sender, EventArgs e)
        {
            list.AddRange(new Work[] { 
                new Work() { WorkStation = 1, WorkTime = 12 },
                new Work() { WorkStation = 2, WorkTime = 15 },
                new Work() { WorkStation = 3, WorkTime = 20 }
            });

            this.dataGridView1.DataSource = list;
        }

        private void button2_Click(object sender, EventArgs e)
        {
            var maxTime = list.Select(w => w.WorkTime).Max();

            list.ForEach(w =>
            {
                w.Efficiency = (w.WorkTime / maxTime).ToString("0.00%");
            });

            this.dataGridView1.DataSource = new List<Work>();
            this.dataGridView1.DataSource = list;
        }
  
    }
    public class Work
    {
        public int WorkStation { get; set; }
        public double WorkTime { get; set; }
        public string Efficiency { get; set; }
    }

如何把 Efficiency通过点击按钮，用chart中的柱状图显示？

[xuzuning]

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        List<Work> list = new List<Work>();

        private void Form1_Load(object sender, EventArgs e)
        {
            list.AddRange(new Work[] { 
                new Work() { WorkStation = 1, WorkTime = 12 },
                new Work() { WorkStation = 2, WorkTime = 15 },
                new Work() { WorkStation = 3, WorkTime = 20 }
            });

            this.dataGridView1.DataSource = list;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            var maxTime = list.Select(w => w.WorkTime).Max();

            list.ForEach(w =>
            {
                w.Efficiency = (decimal)(w.WorkTime / maxTime);//.ToString("0.00%");
            });

            this.dataGridView1.DataSource = new List<Work>();
            this.dataGridView1.DataSource = list;
        }

        private void button2_Click(object sender, EventArgs e)
        {
            chart1.Series.Clear();
            Series series = new Series("Efficiency");
            series.ChartType = SeriesChartType.Column;
            series.BorderWidth = 3; series.ShadowOffset = 2;
            foreach (var x in list)
            {
                series.Points.AddY(x.Efficiency);
            }
            chart1.Series.Add(series);
        }

    }
    public class Work
    {
        public int WorkStation { get; set; }
        public double WorkTime { get; set; }
        public decimal Efficiency { get; set; }
    }

[baidu_34817953]

引用 楼主 baidu_34817953 的回复:

 public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        List<Work> list = new List<Work>();

        private void Form1_Load(object sender, EventArgs e)
        {
            list.AddRange(new Work[] { 
                new Work() { WorkStation = 1, WorkTime = 12 },
                new Work() { WorkStation = 2, WorkTime = 15 },
                new Work() { WorkStation = 3, WorkTime = 20 }
            });

            this.dataGridView1.DataSource = list;
        }

        private void button2_Click(object sender, EventArgs e)
        {
            var maxTime = list.Select(w => w.WorkTime).Max();

            list.ForEach(w =>
            {
                w.Efficiency = (w.WorkTime / maxTime).ToString("0.00%");
            });

            this.dataGridView1.DataSource = new List<Work>();
            this.dataGridView1.DataSource = list;
        }
  
    }
    public class Work
    {
        public int WorkStation { get; set; }
        public double WorkTime { get; set; }
        public string Efficiency { get; set; }
    }

如何把 Efficiency通过点击按钮，用chart中的柱状图显示？

如果想通完成在运行后手动输入数据的话，是不是要添加textbox？