读取Excel数据到DataTable
读取Excel数据到DataTable
代码
/// <summary>
/// 获取指定路径、指定工作簿名称的Excel数据:取第一个sheet的数据
/// </summary>
/// <param name="FilePath">文件存储路径</param>
/// <param name="WorkSheetName">工作簿名称</param>
/// <returns>如果争取找到了数据会返回一个完整的Table，否则返回异常</returns> public DataTable GetExcelData(string astrFileName)
{ string strSheetName = GetExcelWorkSheets(astrFileName)[0].ToString();
return GetExcelData(astrFileName, strSheetName);
}
代码
/// <summary>
/// 返回指定文件所包含的工作簿列表;如果有WorkSheet，就返回以工作簿名字命名的ArrayList，否则返回空
/// </summary>
/// <param name="strFilePath">要获取的Excel</param>
/// <returns>如果有WorkSheet，就返回以工作簿名字命名的ArrayList，否则返回空</returns>
public ArrayList GetExcelWorkSheets(string strFilePath)
{
ArrayList alTables = new ArrayList();
OleDbConnection odn = new OleDbConnection(GetExcelConnection(strFilePath));
odn.Open();
DataTable dt = new DataTable();
dt = odn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
if (dt == null)
{
throw new Exception("无法获取指定Excel的架构。");
}
foreach (DataRow dr in dt.Rows)
{
string tempName = dr["Table_Name"].ToString();
int iDolarIndex = tempName.IndexOf('$');
if (iDolarIndex > 0)
{
tempName = tempName.Substring(0, iDolarIndex);
}
//修正了Excel2003中某些工作薄名称为汉字的表无法正确识别的BUG。 if (tempName[0] == '\'')
{
if (tempName[tempName.Length - 1] == '\'')
{
tempName = tempName.Substring(1, tempName.Length - 2);
}
Else
{
tempName = tempName.Substring(1, tempName.Length - 1);
}
}
if (!alTables.Contains(tempName))
{ alTables.Add(tempName);
}
}
odn.Close();
if (alTables.Count == 0)
{
return null;
}
return alTables;
}
代码
/// <summary> /// 获取指定路径、指定工作簿名称的Excel数据 /// </summary> /// <param name="FilePath">文件存储路径</param> /// <param name="WorkSheetName">工作簿名称</param> /// <returns>如果争取找到了数据会返回一个完整的Table，否则返回异常</returns> public DataTable GetExcelData(string FilePath, string WorkSheetName) { DataTable dtExcel = new DataTable(); OleDbConnection con = new OleDbConnection(GetExcelConnection(FilePath)); OleDbDataAdapter adapter = new OleDbDataAdapter("Select * from [" + WorkSheetName + "$]", con); //读取 con.Open(); adapter.FillSchema(dtExcel, SchemaType.Mapped); adapter.Fill(dtExcel); con.Close(); dtExcel.TableName = WorkSheetName; //返回 return dtExcel; }
代码
/// <summary> /// 获取链接字符串 /// </summary> /// <param name="strFilePath"></param> /// <returns></returns> public string GetExcelConnection(string strFilePath) { if (!File.Exists(strFilePath)) { throw new Exception("指定的Excel文件不存在！"); } return "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + strFilePath + ";Extended properties=\"Excel 8.0;Imex=1;HDR=Yes;\""; //@"Provider=Microsoft.Jet.OLEDB.4.0;" + //@"Data Source=" + strFilePath + ";" + //@"Extended Properties=" + Convert.ToChar(34).ToString() + //@"Excel 8.0;" + "Imex=1;HDR=Yes;" + Convert.ToChar(34).ToString(); }
