绘制图形时不执行Form1_Load()

我需要在VS2013中通过ZedGraph在c#中绘制图形。我创建了一个windows应用程序项目，并将form .cs添加为win forms文件。但是，当我运行代码时，只创建了一个空表单，而没有图形。在调试模式下，我发现Form1_Load()没有执行。为什么?

这是c#代码。

using System.Windows.Forms;
using ZedGraph;
namespace zedgraph_test
{
  public partial class Form1 : Form
  {
    public Form1()
    {
        InitializeComponent();
    }
    // it is not executed.
    private void Form1_Load(object sender, EventArgs e)
    {
        Console.WriteLine("Form1_Load is called");
        ZedGraph.ZedGraphControl zg1 = new ZedGraphControl();
        CreateChart(zg1);
    }
    // definition of CreateChart
    ...
}

如有任何帮助，不胜感激。

我已经尝试了解决方案，但我只有一个空的形式，没有图表显示在形式。

是From1.cs的代码。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using ZedGraph;
namespace zedgraph_test1
{
  public partial class Form1 : Form
  {
      public Form1()
      {
         InitializeComponent();
      }
      private void Form1_Load(object sender, EventArgs e)
      {
        Console.WriteLine("Form1_Load is called");
        ZedGraph.ZedGraphControl zg1 = new ZedGraphControl();
        CreateChart(zg1);
        SetSize();
      }
      private void Form1_Resize(object sender, EventArgs e)
      {
        SetSize();
      }
      private void SetSize()
      {
         zg1.Location = new Point(10, 10);
        // Leave a small margin around the outside of the control
        zg1.Size = new Size(this.ClientRectangle.Width - 20, this.ClientRectangle.Height - 20);
      }

      // Call this method from the Form_Load method, passing your ZedGraphControl
     public static void CreateChart(ZedGraphControl zgc)
     {
         GraphPane myPane = zgc.GraphPane;
        // Set the title and axis labels
        myPane.Title.Text = "Vertical Bars with Value Labels Above Each Bar";
        myPane.XAxis.Title.Text = "Position Number";
        myPane.YAxis.Title.Text = "Some Random Thing";
        PointPairList list = new PointPairList();
        PointPairList list2 = new PointPairList();
        PointPairList list3 = new PointPairList();
        Random rand = new Random();
        // Generate random data for three curves
        for (int i = 0; i < 5; i++)
        {
            double x = (double)i;
            double y = rand.NextDouble() * 1000;
            double y2 = rand.NextDouble() * 1000;
            double y3 = rand.NextDouble() * 1000;
            list.Add(x, y);
            list2.Add(x, y2);
            list3.Add(x, y3);
        }
        // create the curves
        BarItem myCurve = myPane.AddBar("curve 1", list, Color.Blue);
        BarItem myCurve2 = myPane.AddBar("curve 2", list2, Color.Red);
        BarItem myCurve3 = myPane.AddBar("curve 3", list3, Color.Green);
        // Fill the axis background with a color gradient
        myPane.Chart.Fill = new Fill(Color.White,
           Color.FromArgb(255, 255, 166), 45.0F);
        zgc.AxisChange();
        // expand the range of the Y axis slightly to accommodate the labels
        myPane.YAxis.Scale.Max += myPane.YAxis.Scale.MajorStep;
        // Create TextObj's to provide labels for each bar
        BarItem.CreateBarLabels(myPane, false, "f0");
        //Console.ReadLine();
    }
    private void zg1_Load(object sender, EventArgs e)
    {
    }
  }
}

更多更新我在VS2013的工具箱中，通过在对象关系设计下添加zedgraph.dll，添加了zedgraphControl。

但是，我的工具箱中的所有组件在VS2013中都是灰色的。

当我运行代码时，我仍然得到一个空表单。

我在http://www.codeproject.com/Articles/5431/A-flexible-charting-library-for-NET试过这个项目

我可以得到图表，即使我的工具箱中的所有组件在VS2013中也都是灰色的。

Console.WriteLine("Form1_Load is called");
ZedGraph.ZedGraphControl zg1 = new ZedGraphControl();

    public Form1()
    {
        InitializeComponent();
        CreateChart(zg1);
    }