vb 连接Access字符串、vb连接Db2的字符串
DB2ConnectionString
b2str = "Provider=MSDASQL.1;Password=a$sk6G7;Persist Security Info=True;User ID=DBA;Data Source=ConDB2SFXXK"
AccessConnectonString
accessstr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "\DMSJK.mdb;Jet OLEDB:database password="
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MS Access语法错误信息
This short article deals with the following common MS Access-related error messages:
Syntax error (missing operator) in query expression 'field='some_partial_string'
Syntax error in INSERT INTO statement
Syntax error in UPDATE statement
Syntax error in from clause
Sy ......
VB.NET 禁止一个程序运行多次代码:
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If UBound(Diagnostics.Process.GetProcessesByName(Diagnostics.Process.GetCurrentProcess.ProcessName)) > 0 Then
MsgB ......
Microsoft Jet OLE DB 4.0
Standard security:
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\mydatabase.mdb;User Id=admin;Password=;
With database password:
Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\mydatabase.mdb;Jet OLEDB:Database Password=MyDbPassword;
Workgroup (system database):
Prov ......
public static class AccessHelper
{
//数据库连接字符串
//WebForm
//public static readonly string conn_str = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + HttpContext.Current.Request.PhysicalApplicationPath + System.Configuration.ConfigurationManager ......
