C# 导入excel

/// <summary>
/// 导入excel数据
/// </summary>
/// <param name="hasTitle"></param>
/// <returns></returns>
public System.Data.DataTable GetDataFromExcelByConn(bool hasTitle = false)
{
OpenFileDialog openFile = new OpenFileDialog();
openFile.Filter = "Excel(*.xls)|*.xls";
openFile.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
openFile.Multiselect = false;
if (openFile.ShowDialog() == DialogResult.Cancel) return null;
var filePath = openFile.FileName;
string fileType = System.IO.Path.GetExtension(filePath);
if (string.IsNullOrEmpty(fileType)) return null;

using (DataSet ds = new DataSet())
{
string strCon = string.Format("Provider=Microsoft.Jet.OLEDB.{0}.0;" +
"Extended Properties=\"Excel {1}.0;HDR={2};IMEX=1;\";" +
"data source={3};",
(fileType == ".xls" ? 4 : 12), (fileType == ".xls" ? 8 : 12), (hasTitle ? "Yes" : "NO"), filePath);
string strCom = " SELECT * FROM [Sheet1$]";
using (OleDbConnection myConn = new OleDbConnection(strCon))
using (OleDbDataAdapter myCommand = new OleDbDataAdapter(strCom, myConn))
{
myConn.Open();
myCommand.Fill(ds);
}
if (ds == null || ds.Tables.Count <= 0) return null;
return ds.Tables[0];
}
}

// 具体使用方法，同datatable使用方式一样
DataTable table = GetDataFromExcelByConn();
table.Rows[1][1].ToString(); // 获取第二行第二例数据