oledb

Connecting to ACCDB format MS-ACCESS database through OLEDB

不羁的心 提交于 2019-11-28 23:41:48
I've recently made another question about connecting to MS-ACCESS database with .NET in C# or VB.NET. It worked just as intended with MDB, but with accdb it caused an exception in conn.Open(); which follows: alt text http://dl.dropbox.com/u/3045472/accdb_fail.png Is there another way to do this? My original intention (like stated in the original question ) is gathering some (actually, a lot of) fields. Andrey Use ACE 4 driver, download it here then use following connection string: "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\marcelo.accdb;Jet OLEDB:Database Password=MyDbPassword;" 来源:

Read password protected excel file using OLEDB in C#

江枫思渺然 提交于 2019-11-28 23:40:39
In my c# application I am using OLEDB connection string " Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\test.xls;Extended Properties=\"Excel 8.0;HDR=NO;ReadOnly=true;IMEX=1\" " to read Excel files. In order to read a password protected file I tried adding password field in connection string but was unable to read file. I want to know is there any way to read password protected Excel files using OLEDB if I know its password beforehand. Here are different ways to connect to an Excel file , including OLEDB. According to this, you can't open a password protected file with standard methods. You

What are the pros and cons of OleDB versus SQLClient?

不羁岁月 提交于 2019-11-28 21:27:18
Some context: one of the systems I'm working on is a .net 2.0 web application. VB.net for the front end, and SQL Server 2005 for the backend. For a variety of reasons that have been lost to time, the original designer decided to use the .Net OleDB connection rather than the SQLClient connection. After a few years of development, this particular system is on the cusp of crossing the line from "beta" into "1.0" status. One of the things we've been talking about at this point is moving to the SQLClient connection. While I'm aware that it's best practice to be using it, and that it's the only way

“The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine” Error in importing process of xlsx to a sql server

你离开我真会死。 提交于 2019-11-28 15:37:23
I have a 64 bit windows 7 and SQLServer 2008 R2 (64 bit) I follow the instructions that are here to import excel file to sql server but in figure3 section of that post when I try to access excel file and when I click next this error make me stop: The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine I search the web i knew that I must install AccessDatabaseEngine_x64 . but when I install it I have a same problem Can you please help me what to do? Install the following to resolve your error. 2007 Office System Driver: Data Connectivity Components AccessDatabaseEngine

Reading CSV file with OLEDB ignores first line even with HDR=No in Connection String

浪尽此生 提交于 2019-11-28 14:36:33
We're converting a Classic ASP site to an ASP.NET site. One function was to upload a 'template' of data in CSV format for importing into the database. There were several different record types in there (the first field always indentifies the type of data). The task was to get the CSV into a DataTable so it could be validated (new project is to have MUCH better validation rules) The code seemed pretty straightforward - watered down (taking out comments, Try/Catch, etc) it is as follows: Dim da As New System.Data.OleDb.OleDbDataAdapter Dim cn As New System.Data.OleDb.OleDbConnection("Provider

“The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine” Error in importing process of xlsx to a sql server

拜拜、爱过 提交于 2019-11-28 14:23:12
问题 I have a 64 bit windows 7 and SQLServer 2008 R2 (64 bit) I follow the instructions that are here to import excel file to sql server but in figure3 section of that post when I try to access excel file and when I click next this error make me stop: The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine I search the web i knew that I must install AccessDatabaseEngine_x64 . but when I install it I have a same problem Can you please help me what to do? 回答1: Install the

SQL Server ODBC Driver not raising errors

一个人想着一个人 提交于 2019-11-28 13:54:34
This question is part in a series of bugs in the Microsoft ODBC driver: ODBC driver fails to raise errors; but instead suppresses them Reading columns out of order returns incorrect results Cannot execute a stored procedure that is a SYNONYM Microsoft has said they will not be fixing these bugs in their ODBC driver. Background If i have a sample table: CREATE TABLE Wallet ( WalletID int NOT NULL, Name varchar(50) NOT NULL ) i attempt to issue sql that inserts into the table without specifying a value to the NOT NULL WalletID column: INSERT INTO Wallet (WalletID, Name) VALUES (1, 'Fan') INSERT

Accessing Excel Spreadsheet with C# occasionally returns blank value for some cells

北城余情 提交于 2019-11-28 12:04:17
I need to access an excel spreadsheet and insert the data from the spreadsheet into a SQL Database. However the Primary Keys are mixed, most are numeric and some are alpha-numeric. The problem I have is that when the numeric and alpha-numeric Keys are in the same spreadsheet the alpha-numeric cells return blank values, whereas all the other cells return their data without problems. I am using the OleDb method to access the Excel file. After retrieving the data with a Command string I put the data into a DataAdapter and then I fill a DataSet. I iterate through all the rows (dr) in the first

“Data type mismatch in criteria expression.” Error

情到浓时终转凉″ 提交于 2019-11-28 11:53:57
问题 I get a "Data type mismatch in criteria expression." error when running this code on one database but it works perfectly fine on another database. When trying to copy the relevent table to other database and run it from him the program fails again! using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace Project { public partial class Login : Form { public

Microsoft.Jet.OLEDB.4.0 Converting Characters

倖福魔咒の 提交于 2019-11-28 11:38:40
I'm working with a CSV that contains characters like: ” and • I am reading the CSV via OleDb and the provider is Microsoft.Jet.OLEDB.4.0. when the data is loaded into the OleDbCommand, the characters are converted to the following respectively: “ and • I suspected there might be a collation setting in the connection string but I was unable to find anything about this. I can confirm the following: I can see the original character in the CSV when I open it. If I run a select on the file through OleDb WHERE [field] LIKE '%•%' I get 0 rows but if SELECT WHERE [field] LIKE '%“%' I get rows