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();            }