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 System.Data.SqlClient;
namespace MultiCAnalyseHR
{
public partial class Frm_Main : Form
{
SqlConnection con = new SqlConnection("server=.;pwd=Server2012;uid=sa;database=db_TomeOne");
SqlCommand cmd;
static int ConutNum = 0;
static float floatNum=0.0f;
public Frm_Main()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
using (cmd = new SqlCommand("select sum(t_Num) from tb_manpower ", con))
{
con.Open();
int Sum = Convert.ToInt32(cmd.ExecuteScalar());
con.Close();
ShowPic(Sum);
}
}
private void ShowPic(int Sum)//通过自定义ShowPic( )方法,绘制多饼图分析企业人力资源情况
{
using (cmd = new SqlCommand("select t_Point,sum(t_Num) from tb_manpower group by t_Point order by sum(t_Num) desc", con))
{
Bitmap bmp = new Bitmap(this.panel1.Width, this.panel1.Height); //创建画布
Graphics g = Graphics.FromImage(bmp); //创建Graphics对象
cmd.Connection.Open();
SqlDataReader dr = cmd.ExecuteReader(); //创建SqlDataReader对象
while (dr.Read()) //开始读取记录
{
float f = Convert.ToSingle(dr[1]) / Sum;
string str = dr[0].ToString();
drowPic(g, f, str); //调用drowPic方法绘制饼图
}
//绘制线条
g.DrawLine(new Pen(Color.Black), 0, this.panel1.Height / 2, this.panel1.Width, this.panel1.Height / 2);
g.DrawLine(new Pen(Color.Black), this.panel1.Width / 2, 0, this.panel1.Width / 2, this.panel1.Height);
this.panel1.BackgroundImage = bmp; //显示绘制的图形
dr.Close(); //关闭SqlDataReader对象
con.Close(); //关闭数据库连接
}
}
private void drowPic(Graphics g, float f, string str) //根据要求绘制饼图
{
if (ConutNum == 0) //如果ConutNum为0时执行
{
//绘制扇形
g.FillPie(new SolidBrush(Color.Black), 0, 0, (this.panel1.Width) / 2, (this.panel1.Height - 10) / 2, 0, 360 * f);
//绘制文本
g.DrawString(str, new Font("宋体", 10, FontStyle.Bold), new SolidBrush(Color.Black), (this.panel1.Width) / 2 - 70, 10);
g.DrawString(Convert.ToString(f * 100).Substring(0, 5) + "%", new Font("宋体", 10, FontStyle.Bold), new SolidBrush(Color.Black), (this.panel1.Width) / 2 - 70, 25); //绘制文本
floatNum = 360 * f; //计算角度
ConutNum += 1; //使ConutNum为1
}
else if (ConutNum == 1) //如果ConutNum为1时执行
{
g.FillPie(new SolidBrush(Color.DarkOrange), (this.panel1.Width) / 2, 0, (this.panel1.Width) / 2, (this.panel1.Height - 10) / 2, floatNum, 360 * f); //绘制扇形
g.DrawString(str, new Font("宋体", 10, FontStyle.Bold), new SolidBrush(Color.DarkOrange), (this.panel1.Width) / 2 + 10, 10); //绘制文本
g.DrawString(Convert.ToString(f * 100).Substring(0, 5) + "%", new Font("宋体", 10, FontStyle.Bold), new SolidBrush(Color.DarkOrange), (this.panel1.Width) / 2 + 10, 25); //绘制文本
floatNum += 360 * f; //计算角度
ConutNum += 1; // ConutNum为2
}
else if (ConutNum == 2) // ConutNum为2时执行
{
g.FillPie(new SolidBrush(Color.Red), 0, (this.panel1.Height - 10) / 2 + 10, (this.panel1.Width) / 2, (this.panel1.Height - 10) / 2, floatNum, 360 * f); //绘制扇形
g.DrawString(str, new Font("宋体", 10, FontStyle.Bold), new SolidBrush(Color.Red), 10, (this.panel1.Height - 10) / 2 + 20); //绘制文本
g.DrawString(Convert.ToString(f * 100).Substring(0, 5) + "%", new Font("宋体", 10, FontStyle.Bold), new SolidBrush(Color.Red), 10, (this.panel1.Height - 10) / 2 + 35); //绘制文本
floatNum += 360 * f; //计算角度
ConutNum += 1; // ConutNum为3
}
else if (ConutNum == 3) // ConutNum为3时执行
{
g.FillPie(new SolidBrush(Color.Blue), (this.panel1.Width) / 2 - 10, (this.panel1.Height - 10) / 2 + 10, (this.panel1.Width) / 2, (this.panel1.Height - 10) / 2, floatNum, 360 * f); //绘制扇形
g.DrawString(str, new Font("宋体", 10, FontStyle.Bold), new SolidBrush(Color.Blue), (this.panel1.Width) / 2 + 10, (this.panel1.Height - 10) / 2 + 20); //绘制文本
g.DrawString(Convert.ToString(f * 100).Substring(0, 5) + "%", new Font("宋体", 10, FontStyle.Bold), new SolidBrush(Color.Blue), (this.panel1.Width) / 2 + 10, (this.panel1.Height - 10) / 2 + 35); //绘制文本
}
}
}
}
