private void loadinfo()
{
int i = 0;
clsExcelReader er = new clsExcelReader();
OpenFileDialog openFileDialog = new OpenFileDialog();
openFileDialog.InitialDirectory = "c:\\";//初始路径
openFileDialog.Filter = "文本文件|*.*|C#文件|*.cs|所有文件|*.*";
openFileDialog.RestoreDirectory = true;
openFileDialog.FilterIndex = 1;
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
er.FileName = openFileDialog.FileName;
}
er.SheetNumber = 1;
if (er.OpenFileContinuously() == false)
{
label1.Text = er.ErrorString;
return;
}
int iCount = er.RowCount;
for (i = 0; i < iCount - 2; i++)
{
pork Pork = new pork();
Pork.name = er.getTextInOneCell(i + 3, 20);
string priceA = er.getTextInOneCell(i + 3, 7);
if (priceA.IndexOf('-') == -1)
{ Pork.price = Convert.ToDouble(er.getTextInOneCell(i + 3, 7)); }
else
{ Pork.price = Convert.ToDouble(priceA.Substring(0, priceA.IndexOf('-'))); }
Pork.date = er.getTextInOneCell(i + 3, 18).Substring(0, 9);
porklist.Add(Pork);
}
label1.Text = porklist.Count.ToString();
}
private void button1_Click(object sender, EventArgs e)
{
clsExcelReader er = new clsExcelReader();
//打开文件对话框
OpenFileDialog openFileDialog = new OpenFileDialog();
openFileDialog.InitialDirectory = "c:\\";//初始路径
openFileDialog.Filter = "文本文件|*.*|C#文件|*.cs|所有文件|*.*";
openFileDialog.RestoreDirectory = true;
openFileDialog.FilterIndex = 1;
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
er.FileName = openFileDialog.FileName;
}
//
textBox1.Text = er.FileName;
er.SheetNumber = 1;
if (er.OpenFileContinuously() == false)
{
textBox1.Text = er.ErrorString;
return;
}
int iCount = er.RowCount;
string[] listMonth = new string[iCount - 2];
clsChartPoint[] listPrice = new clsChartPoint[iCount - 3];
for (int i = 0; i < iCount - 3; i++)
{
listPrice[i] = new clsChartPoint();
//列号是指定的
listPrice[i].PointValue = Convert.ToDouble(er.getTextInOneCell(i + 3, 3));
listPrice[i].PointName = er.getTextInOneCell(i + 3, 1);
}
er.CloseFile();
this.AddIntoChart(listPrice, chart1);
//设置Chart的滚动条:
//设置滚动条是在外部显示
chart1.ChartAreas["ChartArea1"].AxisX.ScrollBar.IsPositionedInside= false;
//设置滚动条的宽度
chart1.ChartAreas["ChartArea1"].AxisX.ScrollBar.Size = 20;
//滚动条只显示向前的按钮，主要是为了不显示取消显示的按钮
chart1.ChartAreas["ChartArea1"].AxisX.ScrollBar.ButtonStyle = ScrollBarButtonStyles.SmallScroll;
//设置图表可视区域数据点数，说白了一次可以看到多少个X轴区域
chart1.ChartAreas["ChartArea1"].AxisX.ScaleView.Size = 10;
//设置滚动一次，移动几格区域
chart1.ChartAreas["ChartArea1"].AxisX.ScaleView.MinSize = 2;
//设置X轴的间隔，设置它是为了看起来方便点，也就是要每个X轴的记录都显示出来
chart1.ChartAreas["ChartArea1"].AxisX.Interval=2;
//X轴起始点
chart1.ChartAreas["ChartArea1"].AxisX.Minimum = 0;
//X轴结束点，一般这个是应该在后台设置的，
chart1.ChartAreas["ChartArea1"].AxisX.Maximum = 19;
//对于我而言，是用的第一列作为X轴，那么有多少行，就有多少个X轴的刻度，所以最大值应该就等于行数；
//该值设置大了，会在后边出现一推空白，设置小了，会出后边多出来的数据在图表中不显示，所以最好是在后台根据你的数据列来设置.要实现显示滚动条，就不能设置成自动显示刻度，必须要有值才可以。
}