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private void button1_Click(object sender, EventArgs e)
{
saveFileDialog1.Title = "保存的excel文件";
saveFileDialog1.InitialDirectory = "c:\\";
saveFileDialog1.Filter = "Excel97-2003 (*.xls)|*.xls|All Files (*.*)|*.*";
saveFileDialog1.ShowDialog();
if (saveFileDialog1.FileName == "" || saveFileDialog1.FileName == null)
{
MessageBox.Show("文件名不能为空!");
return;
}
string path = saveFileDialog1.FileName;
string constr = "Data Source=.;Initial Catalog=Exhibition;User ID=sa;Password=";
string sql = GetStrSql();
DataSet ds=new DataSet();
using (SqlConnection con = new SqlConnection(constr))
{
SqlDataAdapter da = new SqlDataAdapter(sql, con);
da.Fill(ds);
}
if (ds == null)
{
MessageBox.Show("数据获取有误!");
return;
}
WriteExcel(ds, path);
}
public void WriteExcel(DataSet ds, string path)
{
try
{
long totalCount = ds.Tables[0].Rows.Count;
lblTip.Text = "共有" + totalCount + "条数据。";
Thread.Sleep(1000);
long rowRead = 0;
float percent = 0;
StreamWriter sw = new StreamWriter(path, false,Encoding.GetEncoding("gb2312"));
StringBuilder sb = new StringBuilder();
for (int k = 0; k < ds.Tables[0].Columns.Count; k++)
{
sb.Append(ds.Tables[0].Columns[k].ColumnName.ToString() + "\t");
}
sb.Append(Environment.NewLine);
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
rowRead++;
percent = ((float)(100 * rowRead)) / totalCount;
Pbar.Maximum = (int)totalCount;
Pbar.Value = (int)rowRead;
lblTip.Text = "正在写入[" + percent.ToString("0.00") + "%]...的数据";
System.Windows.Forms.Application.DoEvents();
for (int j = 0; j < ds.Tables[0].Columns.Count; j++)
{
sb.Append(ds.Tables[0].Rows[i][j].ToString() + "\t");
}
sb.Append(Environment.NewLine);
}
sw.Write(sb.ToString());
sw.Flush();
sw.Close();
MessageBox.Show("已经生成指定Excel文件!");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
public string GetStrSql()
{
string strSql = "select d.* from ( select cBarcode ,max(case halldoorid When '36' then '1' else '0' end ) [1.1号馆],max(case halldoorid When '37' then '1' else '0' end ) [2.1号馆],max(case halldoorid When '38' then '1' else '0' end ) [3.1号馆],max(case halldoorid When '39' then '1' else '0' end ) [4.1号馆],max(case halldoorid When '40' then '1' else '0' end ) [5.1号馆],max(case halldoorid When '41' then '1' else '0' end ) [6.1号馆],max(case halldoorid When '42' then '1' else '0' end ) [8.1号馆],max(case halldoorid When '43' then '1' else '0' end ) [1.2号馆],max(case halldoorid When '44' then '1' else '0' end ) [2.2号馆],max(case halldoorid When '45' then '1' else '0' end ) [3.2号馆],max(case halldoorid When '46' then '1' else '0' end ) [4.2号馆],max(case halldoorid When '47' then '1' else '0' end ) [5.2号馆],max(case halldoorid When '48' then '1' else '0' end ) [9.1号馆],max(case halldoorid When '49' then '1' else '0' end ) [10.1号馆],max(case halldoorid When '50' then '1' else '0' end ) [11.1号馆],max(case halldoorid When '51' then '1' else '0' end ) [12.1号馆],max(case halldoorid When '52' then '1' else '0' end ) [13.1号馆],max(case halldoorid When '53' then '1' else '0' end ) [9.2号馆],max(case halldoorid When '54' then '1' else '0' end ) [10.2号馆],max(case halldoorid When '55' then '1' else '0' end ) [11.2号馆],max(case halldoorid When '56' then '1' else '0' end ) [12.2号馆],max(case halldoorid When '57' then '1' else '0' end ) [13.2号馆],max(case halldoorid When '58' then '1' else '0' end ) [9.3号馆],max(case halldoorid When '59' then '1' else '0' end ) [10.3号馆],max(case halldoorid When '60' then '1' else '0' end ) [11.3号馆],max(case halldoorid When '61' then '1' else '0' end ) [VIP3.2号馆],max(case halldoorid When '62' then '1' else '0' end ) [VIP11.3号馆],max(case halldoorid When '63' then '1' else '0' end ) [VIP14.3号馆]from tblReadCard group by cBarcode ) d left join ( select cBarcode 观众条码 from (select distinct cBarcode,cReadDate from tblReadCard where cReadDate between '2011-07-08' and '2011-07-11') a group by cBarcode ) c on d.cBarcode=c.观众条码 group by cBarcode,[1.1号馆],[2.1号馆],[3.1号馆],[4.1号馆],[5.1号馆],[6.1号馆],[8.1号馆],[1.2号馆],[2.2号馆],[3.2号馆],[4.2号馆],[5.2号馆],[9.1号馆],[10.1号馆],[11.1号馆],[12.1号馆],[13.1号馆],[9.2号馆],[10.2号馆],[11.2号馆],[12.2号馆],[13.2号馆],[9.3号馆],[10.3号馆],[11.3号馆],[VIP3.2号馆],[VIP11.3号馆],[VIP14.3号馆]";
return strSql;
}