dev简单实现柱状图，曲线图

DataTable dt = new DataTable();
dt.Columns.Add("A");
dt.Columns.Add("B", typeof(Int32));
for (int i = 0; i < 10; i++)
{
if (i % 2 == 0)
{
dt.Rows.Add("测试数据00" + i, 20 * i);
}
else
{
dt.Rows.Add("测试数据00" + i, 5 * i);
}
}

//根据选择显示不同的Char
private void ShowChar(int index)
{

Series ss = null;
switch (index)
{
case 0:
ss = new Series("数值", ViewType.Bar);
break;
case 1:
ss = new Series("数值", ViewType.Spline);
break;
}
if (ss != null)
{
this.chartControl1.Series.Clear();
ss.DataSource = dt;
ss.ArgumentDataMember = "A";
ss.ValueDataMembers[0] = "B";
this.chartControl1.Series.Add(ss);
}
}