我的ACCESS数据库连接也老出错..

错误如下:

The Microsoft Jet database engine cannot open the file 'D:\webdb1.mdb'. It is already opened exclusively by another user, or you need permission to view its data.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.OleDb.OleDbException: The Microsoft Jet database engine cannot open the file 'D:\webdb1.mdb'. It is already opened exclusively by another user, or you need permission to view its data.

Source Error:

Line 186:				else
Line 187:				{
Line 188:					oleDbConnection1.Open();				
Line 189:					DataColumnCollection myDCC=applyDataSet1.Tables[0].Columns ;
Line 190:					DataColumn[] myDC={myDCC["username"]};