Hello everyone! I am getting some problems with my application. The problem is that after developing the setup of my application I have installed it to two different computers. One is using Windows XP and other uses Windows 98 as Operating system. My application works perfectly on a system having windows xp, but with system having windows 98 it gives error when my user try to print a text file. The error message says: Object reference is not set to the instance of the object Also the details shows that there are some problems in Print Preview control's page information. Can anyone figure out what's the problem is? I am confused with this problem. I have checked many times but its working fine only in Windows XP or 2000 or higher that 98. Can anyone help me? Waiting for any reply.:confused: Thanx in advance.

The file is not shared, its local to client system. I want to deliver this database file to my client, so I added it while I develop my setup & package. So when the setup is run, the file is also installed to application's folder. Now for your last question, sorry I don't understand what you want to say. Its a simple Ms Access file having some tables & relationships between them. That's it. I just want to deliver this file alongwith my application so I add it with the application. Waiting for reply. Thanx...

Hello all! I have a problem with my application. After completion of my program, when I install it to some other PC & try to run it, it gives me "path not found error" for database file. I have used Ms Access file as my backend. I use Data Adapter Configuration Wizard to make Oledbadapter, Oledbconnection & Dataset. I then realize that the path of my backend file is set according to my computer's path. Someone told me to use Application.Startuppath in connection string. Now I want to know here how to use it, & specially where to use it? As I have mentioned earlier that I use wizard to make connection object, I copy the connection string from oledbconnection's property window & copy it to my form's load event like so (but I didn't delete the Oledbconnection object): Dim cnn as new oledbconnection dim path as string = application.startuppath & "\" & "Database.MDB" cnn.connectionstring="........, Data source=" & path & ",.......... But this thing didn't work here. I still got path error, or sometimes I got this error "Object reference not set to an instance of an object." Isn't there a way by which I can solve this problem? I am using wizard as I am not so familier with VB.NET. Can anyone help me to complete my project.:confused: Thanx in advance.

Hello everyone!:) I am new to this site & to VB.NET. I have got following problem. I have 3 listbox and one datagrid control on my form. I have 4 tables like-> Customer,City,Area,Country Relation between these tables is like so: 1 Country --> Many Cities 1 city --> Many Areas 1 Area --> Many Customers Now what I want to do is that when form is loaded then country names are displayed in listbox1, when user selects a country, all cities of that country are displayed in listbox 2, and when user selects a city then its areas are displayed, and finally when user selects an area then customers of that area are displayed in datagrid. I have tried selectedindex property of listbox to solve this problem. Can anyone give me a better suggestion. I'll be thankful if you can help me by providing an example for it, it'll be easier for me to understand it then. Thanx. want to learn.