lblMsg.Text = string.Format("正在导出第{0}个条件，第{1}行", sqlIndex.ToString(), (i + 1).ToString());
double x = rowIndex * 1.0 / recordCount * 100;
lblProgress.Text = string.Format("总行数：{0}, 当前完成总{1}行，百分占比：{2} %", recordCount.ToString(), rowIndex.ToString(), x.ToString("#0.0"));
});
}
FileStream outFs = new FileStream(fileName, FileMode.Open);
workbook.Write(outFs);
outFs.Close();
}
}).ContinueWith(TaskEnded);
}
catch (Exception ex)
{
MessageBox.Show("发生异常，错误提示：" + ex.Message);
}
}
private void TaskEnded(Task task)
{
txtSql.SafeCall(() =>
{
lblMsg.Text = "全部导出完成！";
txtSql.AppendText("处理完成！\r\n");
});
}
/*
引用命名空间：
using System.IO;
using System.Threading.Tasks;
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
*/
public Form1()
{
InitializeComponent();
List
new DictionaryEntry(1, "XA"),
new DictionaryEntry(2, "XB")
};
cbType.BindComboBox(list);
}
private void CreateExcel(string fileName)
{
if (File.Exists(fileName))
File.Delete(fileName);
IWorkbook workbook = new XSSFWorkbook();
ISheet sheet = workbook.CreateSheet("Sheet1");
FileStream sw = File.Create(fileName);
workbook.Write(sw);
sw.Close();
}
private void btnExport_Click(object sender, EventArgs e)
{
try
{
Task.Factory.StartNew(() =>
{
txtSql.SafeCall(() =>
{
txtSql.AppendText("开始处理...\r\n");
});
BusinessType businessType = GetBusinessType();
string[] sqlWhereArray = Sql.SqlWhereArray;
string[] DateRemarkArray = Sql.DateRemarkArray;
string fileName = string.Format("{0}.xlsx", businessType.ToString());
CreateExcel(fileName);
string sqlCount = Sql.GetRecordSql(businessType, "");
int recordCount = db.ExecuteScalar(sqlCount);
int sqlIndex = 0;
int rowIndex = 0;
foreach (string sqlWhre in sqlWhereArray)
{
sqlIndex++;
FileStream fs = File.Open(fileName, FileMode.Open);
IWorkbook workbook = new XSSFWorkbook(fs);
ISheet sheet = workbook.GetSheetAt(0);
txtSql.SafeCall(() =>
{
txtSql.AppendText("条件" + sqlIndex.ToString() + "：" + DateRemarkArray[sqlIndex - 1]);
});
string sql = Sql.GetDataSql(businessType, sqlWhre);
DataTable dt = db.GetDataSet(sql).Tables[0];
int columnsCount = dt.Columns.Count;
if (sqlIndex == 1)
{
IRow row0 = sheet.CreateRow(0);
for (int m = 0; m < columnsCount; m++)
{
DataColumn dc = dt.Columns[m];
row0.CreateCell(m).SetCellValue(dc.Col