/// <summary>
/// 打开Excel文档并转为DataTable
/// </summary>
/// <returns></returns>
public static DataTable ExcelWorksheetToDataTable()
{
DataTable dtExecl = new DataTable();
double Ver = GetExcelVer();
if (Ver <= 0)
{
MessageBox.Show("The computer does not have Excel installed.", "prompt");
return null;
}
string ExcelFile = "";
OpenFileDialog ofd = new OpenFileDialog();
if (ofd.ShowDialog() == DialogResult.OK)
{
OleDbConnection conn = null;
ExcelFile = ofd.FileName;
if (ExcelFile.Length > 0)
{
try
{
string StrConn = "Provider={0};" + "Data Source=" + ExcelFile + ";" + "Extended Properties=‘Excel {1};HDR=YES; IMEX=1‘";
if ((new System.IO.FileInfo(ExcelFile).Extension).ToLower() == ".xlsx")
{
StrConn = string.Format(StrConn, "Microsoft.ACE.OLEDB.12.0", "12.0");
}
else
{
StrConn = string.Format(StrConn, "Microsoft.Jet.OLEDB.4.0", "8.0");
}conn = new OleDbConnection(StrConn);
DataSet ds = new DataSet();
conn.Open();
OleDbDataAdapter myCommand = null;
myCommand = new OleDbDataAdapter("select * from [sheet1$]", StrConn);
myCommand.Fill(ds, "sheet1");
if (ds != null && ds.Tables.Count > 0)
{
dtExecl = ds.Tables[0];
if (!dtExecl.Columns.Contains("IntAUID"))
{
dtExecl.Columns.Add("IntAUID", typeof(int));
}
int i = 1;
foreach (DataRow dr in dtExecl.Rows)
{
dr["IntAUID"] = i;
i += 1;
}
}
}
catch (Exception e)
{
MessageBox.Show(e.ToString());
return null;
}
finally
{
conn.Close();
conn.Dispose();
}
}
}
return dtExecl;
}
Code by 博客园-曹永思
/// <summary>
/// 获取当前计算机安装Excel版本号
/// </summary>
/// <returns></returns>
private static double GetExcelVer()
{
Type objExcelType = Type.GetTypeFromProgID("Excel.Application");
if (objExcelType == null)
{
return 0;
}
object objApp = Activator.CreateInstance(objExcelType);
if (objApp == null)
{
return 0;
}
object objVer = objApp.GetType().InvokeMember("Version", BindingFlags.GetProperty, null, objApp, null);
double Ver = Convert.ToDouble(objVer.ToString());
return Ver;
}