oledbexception 0x80004005

AccessDataSource control does not have its own name for this parameter, so only the name sqldatasourcestatus-eventarguments can be used. If the exception parameter is empty, it means nothing happens. If the exception parameter has a value, the value is checked. If the parameter is an OLE DB exception type, the text of the warning label on the page will be prompted. Remind you again of the use of the term. If there is a accessexception type, it will be clearer, but in practice there is no such t

= Me.Connection.ConnectionStringMe.writetrace (Message "{" Innerexception.message "}")Throw NewmineEnd Sub Using this method, a derived class can simply invoke a protected method, passing in a particular data exception (typically with SqlException or oledbexception), which is intercepted and adds a message that is subordinate to a particular data field. The base class wraps the exception in Dalexception and sends it back to the calling program. Th

First, using the Msysobjects table to find the table name is the name of the currently created table, the equivalent of a normal query, but the Access database has a security problem, that is, sometimes you do not have permission to tune these system tables at first, you can then 2007 of access in the operation: With this setting, you can use it. However, sometimes the need to create a dynamic database can not be so, if it is the dynamic creation of the database when the problem of repeating

Microsoft Jet Database Engine cannot open the file D: wwwrootestdata. It has been opened exclusively by another user or has no permission to view data. Note: An unhandled exception occurs during the execution of the current Web request. Check the stack trace information for details about the error and the source of the error in the code. Exception details: System. Data. OleDb. OleDbException: the Microsoft Jet Database Engine cannot open the file D:

*/public static DataSet Importexceltodataset () {OleDbConnection conn = new Oledbco Nnection (strCon1 + m_filepathexcel + strCon2); try {Conn. Open (); } catch (InvalidOperationException IE) {console.write ("The connection is opened repeatedly. \ n "); } catch (OleDbException oe) {Console.Write ("A connection level error occurred while opening the connection. \ n "); } OleDbDataAdapter mycommand = new Oledb

= new OleDbDataAdapter (cmd); 23 DataSet ds = new DataSet (); 24 da. fill (ds); 25 return ds. tables [0]; 26} 27} 28}View Code '/' sends a server response in the application. When processing commands, one or more worker nodes are generated.ORA-00936: Missing Representation Description:Exceptions that are not handled during the current Web requirements of the primary row are reported. Please refer to the heap tracing to obtain the dynamic metadata and production location in the program.Exceptio

keyword, a series of statement errors will occur. For example, update T_Users setUsername = @ Username, Password = @ Password where UserId = @ UserId "indicates" System. data. oleDb. oleDbException: The UPDATE statement syntax is incorrect ". for more reserved keywords, refer to the Internet. 3. import data from SQL to the access database. Note: sql2008 can only be exported to the database of access2007. Changes to Asp.net 1. Modify the connection st

Note: An unhandled exception occurs during the execution of the current Web request. Check the stack trace information for details about the error and the source of the error in the code. Exception details: System. Data. OleDb. OleDbException: The operation must use an updatable query. Error cause: Because the database file *. mdb in the folder (without modifying the Database Name) does not have the data update permission. Solution: 1. win 2000/W

Asp tutorial. net dataset, able, and dateviewAtaset is a temporary small warehouse. Through sqldataapert, it can be equivalent to a truck, and data is stored in dataset through the adapter sqldataapert in the database tutorial. Even if the connection is disconnected, it can still deal with the database, the following is an example: Public static dataset query (string sqlstr) { Using (oledbconnection conn = new oledbconnection (connstr )) { Try { Dataset ds = new dataset () Oledbdataadapter da =

+ "// OdbcConnection myConnection = new OdbcConnection (myConnectionString );// OdbcCommand myCommand = new OdbcCommand (myQuery, myConnection );// MyConnection. Open ();// MyCommand. ExecuteReader ();// MyCommand. Connection. Close ();//}// Catch (OleDbException err)//{// Response. Write ("Error:" + err. Message );//}} There are two common methods for connecting to mysql. One is using Mysql. Data. MySqlClient. The two try methods use a more traditio

.sheets [0]. cells [I, 0]. text + "','" +Fp2.sheets [0]. cells [I, 1]. text + "','" + fp2.sheets [0]. cells [I, 2]. text + "','" + fp2.sheets [0]. cells [I, 3]. text +"','" + Fp2.sheets [0]. cells [I, 4]. text + "','" + fp2.sheets [0]. cells [I, 5]. text + "')";Cmd. executenonquery ();}}Conn. Close ();Return true;}Catch (system. Data. oledb. oledbexception ex){System. Diagnostics. Debug. writeline ("an error occurred when writing data to an Excel file

ID =" date ""; // Cmd. executenonquery (); For(IntI = 0; I { If(Fp2.sheets [0]. cells [I, 0]. Text! ="") { Cmd. commandtext ="Insert into [sheet1 $] (employee ID, name, department, position, date, time) values ("+ Fp2.sheets [0]. cells [I, 0]. Text +","+ Fp2.sheets [0]. cells [I, 1]. Text +","+ Fp2.sheets [0]. cells [I, 2]. Text +","+ Fp2.sheets [0]. cells [I, 3]. Text + ","+ Fp2.sheets [0]. cells [I, 4]. Text +","+ Fp2.sheets [0]. cells [I, 5]. Text +")"; Cmd. executen

myCommand = myConnection. CreateCommand (); OleDbTransaction myTrans; // Start a local transactionMyTrans = myConnection. BeginTransaction (IsolationLevel. ReadCommitted );// Assign transaction object for a pending local transactionMyCommand. Connection = myConnection;MyCommand. Transaction = myTrans;Try{MyCommand. CommandText = \ "Insert into Region (RegionID, RegionDescription) VALUES (100, \ 'description \')\";MyCommand. ExecuteNonQuery ();MyCommand. CommandText = \ "Insert into Region (Reg

[J] [1]. tostring (); // nameString XB = Ds. Tables [0]. Rows [J] [2]. tostring (); // genderString xy = Ds. Tables [0]. Rows [J] [3]. tostring (); // Department CodeString ZY = Ds. Tables [0]. Rows [J] [4]. tostring (); // professional codeString bj = Ds. Tables [0]. Rows [J] [5]. tostring (); // class codeString XJ = Ds. Tables [0]. Rows [J] [6]. tostring (); // student statusString csny = Ds. Tables [0]. Rows [J] [7]. tostring (); // Date of birthString Syd = Ds. Tables [0]. Rows [J] [8]. to

I have configured a one-to-multiple relationship between the order table and the orderitem table, but there is always an error during load. Some test code is as follows: Corder order = NULL; Try { Order = (Corder) Session. Load (typeof (Corder), 1 ); } Catch (exception ee) { Console. writeline (EE. tostring ()); } Finally { If (order! = NULL) Console. writeline (string. Format ("ID = {0} and items. Count = {1}", order. ID, order. Items. Count )); Session. Close (); } Always in order = (Corder)

// Import Excel , returns a dataset Public dataset inputexcel (string path){String strconn = "provider = Microsoft. Jet. oledb.4.0;" + "Data Source =" + path + ";" + "extended properties = Excel 8.0 ;";Oledbconnection conn = new oledbconnection (strconn );Conn. open ();String strexcel = "";Oledbdataadapter mycommand = NULL;Dataset DS = NULL;Strexcel = "select * from [sheet1 $]";Mycommand = new oledbdataadapter (strexcel, strconn );DS = new dataset ();Mycommand. Fill (DS, "Table1 ");Ret

recently, some business modules were upgraded to support Oracle databases, which encountered some subtle problems. 1. If the provider is msdaora, the user name and password cannot be abbreviated as sqloledb. when ADO. NET is used, the user ID and password can be abbreviated to PWD as the connection string. But it may cause some subtle errors. When I changed provider to msdaora, I found that the database connection could not be opened. The exception is system. Data. oledb.

Processing of Excel import errors (xls, XLSX) Recently, the following problems were encountered during the process of creating a small function to import an Excel file to the datagriview: The link string of The Link Excel is written in this way. String strconnection = "provider = Microsoft. Jet. oledb.4.0; Data Source =" + strfilename + "; extended properties = Excel 8.0 "; In this way, everything goes smoothly when writing the connection string to import * XLS. When I import the * XLSX file, th