c#语言报表和图表。
打印报表操作步骤：
1 创建dataset数据集
2 创建rdlc报表文件
3 在窗体中创建reportviewer视图，指定具体数据源
4 给dataset里的datatablede 的对象进行赋值。
参考代码：
private void Form1_Load(object sender, EventArgs e)
{
//连接数据库
SqlConnection coon = new SqlConnection("server=.;database=master;user=sa;pwd=123");
SqlCommand cmd = coon.CreateCommand();
coon.Open();
cmd.CommandText = "select*from student ,score where student.sno=score.sno";
SqlDataReader dr = cmd.ExecuteReader();
if (dr.HasRows)
{
while (dr.Read ())
{
//给dataset里的datatable赋值
DataRow row = DataSet1.lianjiebiao.NewRow();
row["sno"]=dr["sno"];
row["ssex"] = dr["ssex"];
row["sname"] = dr["sname"];
row["sbirthdy"] = dr["sbirthdy"];
row["class"] = dr["class"];
row["cno"] = dr["cno"];
row["degree"] = dr["degree"];
DataSet1.lianjiebiao.Rows.Add(row); //row为行集合
}
}
coon.Close();
this.reportViewer1.RefreshReport();
}
图表：柱状图，把数据库查出来的数据集放在一个泛型集合里，然后把这个泛型集作为参数赋给柱状图。参考代码如下：
public partial class Form1 : Form
{
private DataClasses1DataContext Context; //LINQ to SQL类，连接数据库查询
public Form1()
{
InitializeComponent();
Context = new DataClasses1DataContext();
}
private void Form1_Load(object sender, EventArgs e)
{
//car为表名，take(5)只显示其中五列
List<Car> list = Context.Car.Take(5).ToList();
//为图表指定数据源
chart1.DataSource = list;
chart1.Series["Series1"].XValueMember = "Name";
chart1.Series["Series1"].YValueMembers = "Oil";
chart1.Series["Series2"].XValueMember = "Name";
chart1.Series["Series2"].YValueMembers = "powers";
//下面是线状图显示
chart1.Series["Series2"].ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.FastLine;
}
}
private void Form1_Load(object sender, EventArgs e) { List<Car> list = Context.Car.Take(5).ToList(); //为图表指定数据源 chart1.DataSource = list; chart1.Series["Series1"].XValueMember = "Name"; chart1.Series["Series1"].YValueMembers = "Oil"; chart1.Series["Series2"].XValueMember = "Name"; chart1.Series["Series2"].YValueMembers = "powers"; //下面是线状图显示 chart1.Series["Series2"].ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.FastLine; } } }