I included the database to the project files and build the solution, when I run the application in another machine I get that error
************** Exception Text **************
System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize ---> System.Configuration.ConfigurationErrorsException: Unrecognized configuration section configuration. (C:\Documents and Settings\windows\Desktop\IstanbulFood\POSApp\IstanbulFoodPOS\bin\Debug\IstanbulFoodPOS.exe.Config line 8) at System.Configuration.ConfigurationSchemaErrors.ThrowIfErrors(Boolean ignoreLocal) at System.Configuration.BaseConfigurationRecord.ThrowIfParseErrors(ConfigurationSchemaErrors schemaErrors) at System.Configuration.BaseConfigurationRecord.ThrowIfInitErrors() at System.Configuration.ClientConfigurationSystem.EnsureInit(String configKey) --- End of inner exception stack trace --- at System.Configuration.ClientConfigurationSystem.EnsureInit(String configKey) at System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection(String sectionName) at System.Configuration.ConfigurationManager.GetSection(String sectionName) at System.Configuration.ConfigurationManager.get_ConnectionStrings() at IstanbulFoodPOS.dataAccess..ctor() in D:\IstanbulFood\POSApp\IstanbulFoodPOS\dataAccess.cs:line 17 at IstanbulFoodPOS.Login.EnterButton_Click(Object sender, EventArgs e) in D:\IstanbulFood\POSApp\IstanbulFoodPOS\Login.cs:line 37 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase: file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
IstanbulFoodPOS
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/Documents%20and%20Settings/windows/Desktop/IstanbulFood/POSApp/IstanbulFoodPOS/bin/Debug/IstanbulFoodPOS.exe
----------------------------------------
System.Windows.Forms
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Drawing
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Configuration
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Xml
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.
For example:
<configuration>
<system.windows.forms jitDebugging="true" />
</configuration>
When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.
Config file:
<?xml version="1.0"?>
<configuration>
<configSections> </configSections>
<connectionStrings>
<add name="IstanbulFoodDBConnectionString" connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:\IstanbulFood\POSApp\IstanbulFoodPOS\IstanbulFoodDB.mdbb;Persist Security Info=True" providerName="System.Data.OleDb"/>
</connectionStrings>
<configuration>
<system.windows.forms jitDebugging="true"/>
</configuration>
<startup>
<supportedRuntime version="v2.0.50727"/>
</startup>
</configuration>
Microsoft.ACE.OLEDB.12.0or install Access Runtime 2007 which should work with old provider. - Wernfried Domscheit