asp.net 讀取Excel數據到DataTable的代碼

/// <summary> 
/// 獲取指定路徑、指定工作簿名稱的Excel數據:取第一個sheet的數據 
/// </summary> 
/// <param name="FilePath">文件存儲路徑</param> 
/// <param name="WorkSheetName">工作簿名稱</param> 
/// <returns>如果爭取找到了數據會返回一個完整的Table，否則返回異常</returns> 
public DataTable GetExcelData(string astrFileName) 
{ 
string strSheetName = GetExcelWorkSheets(astrFileName)[0].ToString(); 
return GetExcelData(astrFileName, strSheetName); 
} 
 
代碼 
 代碼如下:

/// <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，否則返回空 
/// </summary> 
/// <param name="strFilePath">要獲取的Excel</param> 
/// <returns>如果有WorkSheet，就返回以工作簿名字命名的ArrayList，否則返回空</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("無法獲取指定Excel的架構。"); 
} 
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中某些工作薄名稱為漢字的表無法正確識別的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; 
} 
 
代碼 
 代碼如下:

/// <summary> 
/// 獲取指定路徑、指定工作簿名稱的Excel數據 
/// </summary> 
/// <param name="FilePath">文件存儲路徑</param> 
/// <param name="WorkSheetName">工作簿名稱</param> 
/// <returns>如果爭取找到了數據會返回一個完整的Table，否則返回異常</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); 
//讀取 
con.Open(); 
adapter.FillSchema(dtExcel, SchemaType.Mapped); 
adapter.Fill(dtExcel); 
con.Close(); 
dtExcel.TableName = WorkSheetName; 
//返回 
return dtExcel; 
} 
 
代碼 
 代碼如下:

/// <summary> 
/// 獲取鏈接字符串 
/// </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(); 
} 

 
 




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