項目中用到了此功能。把大概做法跟大家共享下，希望對大家有所幫助。也給自己總結一下，激勵自己再接再厲。下面中部分代碼被漢字替換了，主要考慮到公司的產品權，希望諒解。
/// <summary>
/// 點擊打開按鈕
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnOpen_Click(object sender, EventArgs e)
{
try
{
OpenFileDialog ofd = new OpenFileDialog();
ofd.Filter = "Excel文件(*.xls)|*.xls";
//標題
ofd.Title = "打開";
//多選
ofd.Multiselect = false;
//默認值
ofd.FilterIndex = 1;
ofd.InitialDirectory = System.AppDomain.CurrentDomain.BaseDirectory;
if (ofd.ShowDialog() == DialogResult.OK)
{
this.txtFilePath.Clear();
this.txtFilePath.Text = ofd.FileName;
}
}
catch(Exception ex)
{
//錯誤
this.lblMsg.Text = ex.Message;
return;
}
}
/// <summary>
/// 點擊導入按鈕
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnImp_Click(object sender, EventArgs e)
{
string filePath = this.txtFilePath.Text.Trim();
if (filePath.Length == 0)
{
this.lblMsg.Text = "請選擇要導入數據的Excel文件!";
return;
}
string fileType = filePath.Substring(filePath.LastIndexOf('.'));
if (!fileType.Equals(".xls"))
{
this.lblMsg.Text = "導入文件類型爲Excel文件!";
return;
}
//this.lblMsg.Text = "正在導入,請稍候...";//這個地方要用多線程，唉。。。
FileImportNY();
}
/// <summary>
/// 導入能源數據
/// </summary>
private void FileImportNY()
{
try
{
OleDbConnectionStringBuilder connectStringBuilder = new OleDbConnectionStringBuilder();
connectStringBuilder.DataSource = this.txtFilePath.Text.Trim();
connectStringBuilder.Provider = "Microsoft.Jet.OLEDB.4.0";
//HDR=NO沒有表頭;IMEX=1特殊格式處理
connectStringBuilder.Add("Extended Properties", "Excel 8.0;HDR=No;IMEX=1");
using (OleDbConnection connection = new OleDbConnection(connectStringBuilder.ConnectionString))
{
DataSet ds = new DataSet();
string strSql = "select * from [sheet頁名稱$]";
OleDbCommand oleCmd = new OleDbCommand(strSql, connection);
connection.Open();
using (OleDbDataReader dataReader = oleCmd.ExecuteReader())
{
ds.Load(dataReader, LoadOption.OverwriteChanges, new string[] { "Sheet1" });
System.Data.DataTable dt = ds.Tables["Sheet1"];
if (dt.Rows.Count > 0)
{
string [] strColumn = new string[12];
for (int i = 2; i < dt.Rows.Count; i++)
{
for (int j = 0; j < 12;j++)
{
//寫入數據庫數據
strColumn[j] = dt.Rows[i][j].ToString();
}
//空行處理
bool isTrue = false;
for (int k = 0; k < strColumn.Length; k++)
{
if (strColumn[k].ToString().Trim() != "")
{
isTrue = true;
break;
}
}
if (isTrue == false)
{
continue;
}
string strColumn1 = strColumn[1].ToString().Trim();
if(strColumn1 == "")
{
this.lblMsg.Text = "Excel文件中" + (i+1).ToString() + "行數據產品代碼不能爲空!";
return;
}
//投入產出類型
string isTR = "";
string strColumn6 = strColumn[6].ToString().Trim();
if(strColumn6 == "投入")
{
isTR = "1";
}
else if(strColumn6 == "產出")
{
isTR = "2";
}
string strSF1 = "";
string strSF2 = "";
string strSF3 = "";
//是否輕收
string strColumn8 = strColumn[8].ToString().Trim();
if(strColumn8 == "否")
{
strSF1 = "0";
}
else if(strColumn8 == "是")
{
strSF1 = "1";
}
//是否高附
string strColumn9 = strColumn[9].ToString().Trim();
if(strColumn9 == "否")
{
strSF2 = "0";
}
else if(strColumn9 == "是")
{
strSF2 = "1";
}
//是否綜合商品
string strColumn10 = strColumn[10].ToString().Trim();
if(strColumn10 == "否")
{
strSF3 = "0";
}
else if(strColumn8 == "是")
{
strSF3 = "1";
}
//判斷數據庫中是否已經存在這條數據
string strCount = ExecuteSQL("select count(*) from 導入表 where 唯一鍵 = '" + strColumn[1].ToString().Trim() + "'").ToString();
string strSqlExc = "";
if(strCount == "0")
{
//insert
strSqlExc = "insert";
}
else
{
//update
strSqlExc = "update";
}
//執行SQL
string strTS = ExecuteSQL(strSqlExc);
if (strTS != "")
{
this.lblMsg.Text = strTS;
return;
}
}
this.lblMsg.Text = "數據導入成功!";
}
else
{
this.lblMsg.Text = "導入數據失敗!";
}
}
connection.Close();
}
}
catch (Exception ex)
{
this.lblMsg.Text = ex.Message.ToString();
return;
}
finally
{
}
//刷新
}