i cant read database connection strings from my appconfig file with my vb.net windows application.
appconfig file is like this
<appSettings> <add key="SQLConnString" value="Data Source=server1;Initial Catalog=dbtest;User Id=sa;Password=pass123;"/> </appSettings>
i want to insert some datas into database
I am getting the error "Object reference not set to an instance of the object" Debugger is suggesting to use the "New" keyword to create an object instance, or to Check to determine if the object is null before calling the method. Error is occurring on line 27: "sReturn = ConfigurationManager.ConnectionStrings(strConnection).ConnectionString" I;m not sure where to go from here.
First, my appconfig connstrings:
<connectionStrings>
<add name="con1"
connectionString="Data Source=VMXP/SQLEXPRESS;Initial Catalog=Interview;Integrated
[Code]....
I have a list box with a collection of items; Can I save user selection the next time the program opens by using Application Settings tab and property Binding?
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I am trying to write a code to save and open data that is in my application. My application contains hundreds of text boxes, combo boxes and labels. I have created an array for each set of data, i.e.,
glist(0).store=combobox1.value
glist(0).cat=combobox2.value
glist(0).it=label3.text
glist(0).quan=label4.text
glist(0).total=label5.text
up to glist(89).
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In my project one task is there in that one logfile is sent to any webserver.For[URL]...How to send a logfile to any webserver.
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[Code]...
An application data file, created by my own VB program, is visible to read and save from that application, but is not visible from Windows Explorer or Notepad. The icon, visible from my VB program, shows a lock. How can I remove the lock and see the program with Windows Explorer. (I need to copy to a another computer to use in a workshop next week.)
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i tried many times to use more than one option but i could not do it.
i am using VB.NET 2005 with framwork 2.
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im making some stuff using VB 2010 recently (im new to VB 2010) and well...i wanna make it into an executable file, how do i do it?
View 1 RepliesWhat I am trying to do is I have a .dat file that I cannot read but can at the same time. What I mean is I know how to decipher it by hand (alas takes minutes per 6 parts and there are thousands.) I am trying to make an application that can read this and allow me to edit it from my computer. I can open this with a hex program such as hex editor neo. I am currently trying to get it so I can read the file and have it place corresponding parts in to text boxes that I can alter to suit my needs.
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If I create a windows application. Where is the file for app.config? Can I modify it?
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View 10 RepliesI'm using vs2010 and can't get this to work. The same code has worked in earlier versions. What has changed?
config file:
<appSettings>
<add key="ConnectionString" value="Data Source=MikeLaptop;Initial Catalog=AdventureWorksDW2008R2;Integrated Security=True"/>
</appSettings>
Code:
Dim strProvider As String = ConfigurationManager.AppSettings("ConnectionString")
strProvider is always = nothing
How to do this now?
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Dim path As String
Dim asm As [Assembly] = [Assembly].GetExecutingAssembly()
path = System.IO.Path.GetDirectoryName(asm.GetName().CodeBase)
this gives path as Application Data, But i need Program Files to locate the .sdf file. how to get this path?
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View 3 Repliesin windows form in button click event how to export the file in a location select by showdialog & it will be delete permanently at a same time.How can i do this! because in .net it will produces error "IO Exception was unhandled" or "The process can not access the file because it is used by anather process." .In button click event how to export the file & delete at same time in vb.net windows application.
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HTML
Imports System.Data.oledb
oledb is not a member of system.data. why?
I have developed a VB 2010 express application that works on my windows 7 machine, but when I deploy it to other windows 7 machines the application will not run at all. I created an msi script to install the software on other machines and it includes the .NET 4.0 framework an all of my application dll's and such. Any idea what might be he problem?
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