Reading the xlsx file of Excel 2007 is the same as reading the old .xls file, both are read by Oledb, only the connection string is different.
Specific code examples:
public static DataTable GetExcelToDataTableBySheet(string FileFullPath,string SheetName)
{
//此连接只能操作Excel2007之前(.xls)文件
string strConn = "Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" + FileFullPath + ";Extended Properties='Excel 8.0; HDR=NO; IMEX=1'";
//此连接可以操作.xls与.xlsx文件
string strConn = "Provider=Microsoft.Ace.OleDb.12.0;" +"data source=" + FileFullPath + ";Extended Properties='Excel 12.0; HDR=NO; IMEX=1'";
OleDbConnection conn = new OleDbConnection(strConn);
conn.Open();
DataSet ds = new DataSet();
OleDbDataAdapter odda = new OleDbDataAdapter(string.Format("SELECT * FROM [{0}]", SheetName), conn);
//OleDbDataAdapter odda = new OleDbDataAdapter(string.Format("select * from [Sheet1$]", conn),conn);
odda.Fill(ds, SheetName);
conn.Close();
return ds.Tables[0];
}
When reading an Excel file, there may be multiple sheets in one file, so it is very useful to get the name of the sheet.
The code example is as follows:
//根据Excel物理路径获取Excel文件中所有表名
public static String[] GetExcelSheetNames(string excelFile)
{
OleDbConnection objConn = null;
System.Data.DataTable dt = null;
try
{
//此连接只能操作Excel2007之前(.xls)文件
tring strConn = "Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" + excelFile + ";Extended Properties='Excel 8.0; HDR=NO; IMEX=1'";
//此连接可以操作.xls与.xlsx文件
string strConn = "Provider=Microsoft.Ace.OleDb.12.0;" +"data source=" + excelFile + ";Extended Properties='Excel 12.0; HDR=NO; IMEX=1'";
objConn = new OleDbConnection(strConn);
objConn.Open();
dt = objConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
if (dt == null)
{
return null;
}
String[] excelSheets = new String[dt.Rows.Count];
int i = 0;
foreach (DataRow row in dt.Rows)
{
excelSheets[i] = row["TABLE_NAME"].ToString();
i++;
}
return excelSheets;
}
catch
{
return null;
}
finally
{
if (objConn != null)
{
objConn.Close();
objConn.Dispose();
}
if (dt != null)
{
dt.Dispose();
}
}
}