C#实现Excel导入sqlite的方法

本文实例讲述了C#实现Excel导入sqlite的方法，是非常实用的技巧。分享给大家供大家参考。具体方法如下：

首先需要引用system.date.sqlite

具体实现代码如下：

system.date.sqlite
system.date.sqlite.linq
//导入--Excel导入sqlite
private void button2_Click(object sender, EventArgs e)
{
 DAL.Sqlite da = new DAL.Sqlite("DataByExcel.db");
 if (chk_sfzj.Checked==false)
 {
//删除全部数据
if (da.SqlExSQLiteCommand("delete from sqllitebyexcel"))
{

}
else
{
  MessageBox.Show("删除原失败，请联系管理员！");
}
 }
 OpenFileDialog ofg = new OpenFileDialog();
 ofg.Filter = "*.xls|*.xls";
 if (ofg.ShowDialog() == System.Windows.Forms.DialogResult.OK)
 {
string sName = ofg.FileName;
if (new BLL.Excelcs().OutExcel(sName, da))
{
  MessageBox.Show("导入成功");
  //bdData("");
}
else
{
  MessageBox.Show("导入失败");
}
 }
}

/// <summary>
/// 初始化数据库
/// </summary>
/// <param name="strSqlitePath">数据库文件路径</param>

SQLiteConnection SQLCon;
public Sqlite(string dataName)
{
   SQLCon = new SQLiteConnection(string.Format("Data Source={0}{1}", System.AppDomain.CurrentDomain.BaseDirectory, dataName));
}

/// <summary>
/// 执行sql语句
/// </summary>
/// <param name="strSql">sql语句</param>
/// <returns>是否执行成功</returns>
public bool SqlExSQLiteCommand(string strSql)
{
 SqlOpen();
 SQLiteCommand cmd = new SQLiteCommand();
 cmd.Connection = SQLCon;
 cmd.CommandText = strSql;
 try
 {
int i = cmd.ExecuteNonQuery();
return true;
 }
 catch (Exception ex)
 {
return false;
 }
}

/// <summary>
/// 导入数据到数据库
/// </summary>    
/// <param name="outFile">文件</param>
/// <param name="sql">数据库操作对象</param>
/// <returns></returns>
public bool OutExcel(string outFile,DAL.Sqlite sql)
{
 DataTable dt = DAL.Excel.TransferData(outFile, "Sheet1").Tables[0];
 try
 {
foreach (DataRow item in dt.Rows)
{

string strSql = @"insert into sqllitebyexcel
 (No,BUSINESS_NO,BUSINESS_TYPE_NAME,VESSEL_NAME_C,VOYAGE,BILL_NO,CTNW1,CTNW2,
   CTNW3,TXDD,XXDD,CTN_NO,CTN_TYPE,NAME1,NAME2,NAME3,IN_DATE,JFJSSJ,JFSC,DYPCD,TXPCSJ,
TXPCSC,JCSJ,TXSC,H986JJYCSJ,YFYXSJ,LXSJ,LXSC,CCJFSJ,TXJCSJ,TXCCSJ,DCTXSC,TimeNow,DDTXSC)
   values('{0}','{1}','{2}','{3}','{4}','{5}','{6}',
'{7}','{8}','{9}','{10}','{11}','{12}','{13}','{14}',
'{15}','{16}','{17}','{18}','{19}','{20}','{21}','{22}','{23}','{24}','{25}','{26}','{27}','{28}','{29}','{30}','{31}','{32}','{33}')";
  string strEnd = string.Format(strSql, item[0], item[1], item[2], item[3], item[4], item[5],
item[6], item[7], item[8], item[9], item[10], item[11], item[12],
item[13], item[14], item[15], item[16].ToDate(), item[17].ToDate(), item[18], item[19].ToDate(),
item[20].ToDate(), item[21], item[22].ToDate(), item[23], item[24].ToDate(), item[25].ToDate(), item[26].ToDate(),
item[27], item[28].ToDate(), item[29].ToDate(), item[30].ToDate(), item[31], DateTime.Now.ToDate(), "");
  sql.SqlExSQLiteCommand(strEnd);
}
   return true;
 }
 catch (Exception ex)
 {
   // MessBox.Show("");
string aa = ex.Message;
return false;
 }
}

public static string ToDate(this object obj)
{
 // if (obj == null || string.IsNullOrEmpty(obj.ToString()))
 if(string.IsNullOrEmpty(obj.ToString().Trim()))
 {
return "null";
 }
 return ((DateTime)obj).ToString("yyyy-MM-dd HH:mm:ss");
}
/// <summary>
/// 获取excel表数据
/// </summary>
/// <param name="excelFile">excel文件路径</param>
/// <param name="sheetName">excel工作表名</param>
/// <returns></returns>
public static DataSet TransferData(string excelFile, string sheetName)
{
 DataSet ds = new DataSet();
 //获取全部数据  
 string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + excelFile + ";" + "Extended Properties=Excel 8.0;";
 OleDbConnection conn = new OleDbConnection(strConn);
 try
 {

conn.Open();
string strExcel = "";
OleDbDataAdapter myCommand = null;
strExcel = string.Format("select * from [{0}$]", sheetName);
myCommand = new OleDbDataAdapter(strExcel, strConn);
myCommand.Fill(ds);
 }
 catch (Exception ex)
 {
throw new Exception(ex.Message);
 }
 finally
 {
conn.Close();
 }
 return ds;
}

相信本文所述对大家的C#程序设计有一定的借鉴价值。