Excel导出导入代码
public class ExcelOut
{
private string cHouseCode;//文件名称，路径名
private string FileName =@"D:\数据导出\";
LogWriter logWriter = new LogWriter();
//接受参数查询数据并导出到指定Excel
public int DBWriteToExcel(System.Data.DataSet myds,string FileName)
{
if (!Directory.Exists(FileName))
{
Directory.CreateDirectory(FileName);
}
int result = 0;
//DataSet myds = DSAddRowColume(DSS);
if (cHouseCode == "维修/加工库")
{
FileName += "维修加工库库存Excel.xls";
}
else
{
FileName += cHouseCode + DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute + DateTime.Now.Second + "闪迪.xls";
}
if (FileName != "")
{
FileStream fs = new FileStream(FileName, FileMode.OpenOrCreate);
StreamWriter writer = new StreamWriter(fs, Encoding.Unicode);
try
{
//取得数据表各列标题，各标题之间以\t分割，最后一个列标题后加回车符
StringBuilder colHeaders = new StringBuilder();
for (int i = 0; i < myds.Tables[0].Columns.Count; i++)
{
colHeaders.Append(myds.Tables[0].Columns[i].Caption.ToString() + "\t");
//colHeaders += myds.Tables[0].Columns[i].Caption.ToString() + "\t";
}
colHeaders.Append("\n");
//输出流中写入取得的数据信息
writer.Write(colHeaders.ToString());
//逐行处理数据
StringBuilder ls_item = new StringBuilder();
for (int i = 0; i < myds.Tables[0].Rows.Count; i++)
{
for (int j = 0; j < myds.Tables[0].Columns.Count; j++)
{
ls_item.Append(myds.Tables[0].Rows[i][j].ToString().Replace("\n", "").Replace("\t", "") + "\t"); ;
}
ls_item.Append("\n");
}
//当前行数据写入HTTP输出流，并且置空ls_item以便下行数据
writer.Write(ls_item.ToString());
result = 1;
}
catch (Exception excep)
{
logWriter.WriteLog("未知错误2 ", excep.Message.ToString(), "", LogLevel.ServiceAction);
result = 0;
}
finally
{
writer.Flush();
writer.Close();
fs.Close();
}
}
else
{
//FileName += cHouseCode+DateTime.Now.Year.ToString()+DateTime.Now.Month.ToString()+DateTime.Now.Day.ToString()+DateTime.Now.Hour.ToString()+DateTime.Now.Minute+DateTime.Now.Second + "库存.xls";
result = 0;
}
return result;
}
private void KillProcess(string processName)
{
System.Diagnostics.Process myproc = new System.Diagnostics.Process();
//得到所有打开的进程
try
{
foreach (System.Diagnostics.Process thisproc in System.Diagnostics.Process.GetProcessesByName(processName))
{
if (!thisproc.CloseMainWindow())
{
thisproc.Kill();
}
}
}
catch (Exception Exc)
{
throw new Exception("", Exc);
}
}
}
读取EXCEL导入C# 返回DS
public DataSet ReadExcel(string filePath)
{
if (filePath=="")
{
return null;
}
//文件格式不正确
if (!filePath.Substring(filePath.LastIndexOf('.')).ToUpper().Equals(".XLSX"))
{
return null;
}
//找不到文件
if (!File.Exists(filePath))
{
return null;
}
DataSet ds = null;
try
{
ds = new DataSet();
string strConn = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties='Excel 8.0;HDR=Yes;IMEX=1;'", filePath);
using (OleDbConnection conn = new OleDbConnection(strConn))
{
conn.Open();
//获取第一个SheetName
//包含excel中表名的字符串数组
DataTable SheetList = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "Table" });
//找不到数据
if (SheetList.Rows.Count <= 0)
{
return null;
}
string TableName = Convert.ToString(SheetList.Rows[0]["TABLE_NAME"]);
OleDbDataAdapter odda = new OleDbDataAdapter("select * from [" + TableName + "]", strConn);
odda.Fill(ds, TableName);
conn.Close();
}
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
return ds;
}