我的数据库是用datatable做的
DataTable dt = new DataTable();
dt.Columns.Add("票据张次");
dt.Columns.Add("票据金额");
dt.Columns.Add("票据种类");
dt.Columns.Add("日期");
DataRow dr = dt.NewRow();
int j=0;
for (j = 0; j < dataGridView1.Rows.Count; j++)
{
dr["票据张次"] = dataGridView1.Rows[j].Cells[0].Value;
dr["票据金额"] = dataGridView1.Rows[j].Cells[1].Value;
dr["票据种类"] = dataGridView1.Rows[j].Cells[2].Value;
dr["日期"] = dataGridView1.Rows[j].Cells[3].Value;
dt.Rows.Add(dr);
}
DataSet selectds = new DataSet();
selectds.Tables.Add(dt);有了这个数据库怎么根据票据类型来制作饼图
DataTable dt = new DataTable();
dt.Columns.Add("票据张次");
dt.Columns.Add("票据金额");
dt.Columns.Add("票据种类");
dt.Columns.Add("日期");
DataRow dr = dt.NewRow();
int j=0;
for (j = 0; j < dataGridView1.Rows.Count; j++)
{
dr["票据张次"] = dataGridView1.Rows[j].Cells[0].Value;
dr["票据金额"] = dataGridView1.Rows[j].Cells[1].Value;
dr["票据种类"] = dataGridView1.Rows[j].Cells[2].Value;
dr["日期"] = dataGridView1.Rows[j].Cells[3].Value;
dt.Rows.Add(dr);
}
DataSet selectds = new DataSet();
selectds.Tables.Add(dt);有了这个数据库怎么根据票据类型来制作饼图
BarItem myBar = this.zedGraphCompare.GraphPane.AddBar(titles[i], null, arrValues, colors[i]);
myBar.Bar.Fill = new Fill(colors[i], Color.White, colors[i]);
myBar.Bar.Border.Color = Color.Transparent; 改下这里就可以显示饼图