Im currently working in integrating GR Fingerprint SDK with vb.net application. I am using MSSQL 2008 as my database and vb.net as the front end. I have completed almost 90% of the application and im stuck in integrating this SDK with my application. It has an error such as Unable to connect to database and also grfinger is not initialized cannot be converted to double and stuffs like dat. [Code]
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Is there possible to use fingerprint image to replace the image generated from the fingerprint device? My requirement is
Need to Use SDK
Use VB languages
Without Fingerprint device
I keep getting an error that the ConnectionString is not initialized.
Here is my
'* Configure data adaptor and fill data set
sqlDABC.SelectCommand = sqlCmd
sqlDABC.Fill(dsBC, "Supplier")
I've got this code and it opens the database connection in debugging (and i've used the wrong password to test that it fails) but when i come to ExecuteNonQuery I get this error
ExecuteNonQuery: Connection property has not been initialized.Here is my code.VB.NET
Public ConnectionString As String = "Data Source=JOHN-PCSQLEXPRESS;Initial Catalog=RLNZ_11;User Id=App;Password=Password;"Dim connection As New SqlClient.SqlConnection(ConnectionString)connection.Open()
Dim command As New SqlClient.SqlCommand("INSERT INTO news (ID, NewsID, NewsTitle) Values (@ID, @NewsID, @NewsTitle)")command.Parameters.AddWithValue("@ID", "")command.Parameters.AddWithValue("@NewsID", NewsID)
command.Parameters.AddWithValue("@NewsTitle", NewsTitle)command.ExecuteNonQuery()
this code is in the button click , i get each data out using spiltbut i encounter error at "cmd.CommandType = CommandType.Text"
Dim conn As New SqlConnection(GetConnectionString())
Dim sb As New StringBuilder(String.Empty)
Dim splitItems As String() = Nothing
[code].....
The code below will throw an InvalidOperationException: The ConnectionString property has not been initialized. The exception is thrown at the line calling Connection.Open() in the Load method. If I use the try-finally statement instead of the using statement, everything works correctly. Can anyone explain why the exception occurs with the using statement?
[Code]...
I have used this piece of code for connecting to the database..It is showing error like The ConnectionString property has not been initialized.
Dim sConnString As String = "user id=" + sUserID + ";password=" + sPwd + ";initial catalog=" + sDatabase + ";Connect Timeout = 30" + ";Pooling=true;Max Pool Size=" + MaxPoolSize + ";Min Pool Size=" + MinPoolSize + ";"
[code].....
i need to update my data using stored procedure here is my code :Try
con = getconnect()
con.Open()
sqlcmd = con.CreateCommand
[code]......
my problem is first of all i created a button and a datagrid to display the mydb.mdb in it the code behind that is as follows when i click on button the students table from mydb.mdb (which resides in my pc) needs to display in datagrid
<code>
using System;
using System.Collections.Generic;
using System.ComponentModel;
[code]....
the error is at Line: dbReader = cmd.ExecuteReader();an the error is :ExecuteReader: Connection property has not been initialized.
As part of the application I'm writing in Visual Basic, I have written code to display records in text boxes and cycle through each of them one record at a time. I'm having trouble getting the code I've written to update records to work however.
VB
Public Class frmRecords
' VARIABLES TO AID NAVIGATION THROUGH RECORDS
Dim moverow As Integer
[code]....
At the present time I get an error that says "The DataAdapter.SelectCommand property needs to be initialized"
I am trying to insert the information from comboxes, check boxes, and date and time picker. I am getting the following error when I hit submit button. "ExecuteNonQuery: Connection property has not been initialized. - system.data" I am sure I am making some silly code mistake that I am not able to figure out.
Dim icount As Integer
Dim SQLstr As String
Try
SQLstr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:ADAccountDel.mdb;"
[code]....
I'm trying to get a grasp on it. Anyways, i'm having the an error for the cmd.ExecuteNonQuery() it gives me an error message as follows "ExecuteNonQuery: Connection property has not been initialized."
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAdd.Click
Dim cmd As New OleDb.OleDbCommand
If Not cnn.State = ConnectionState.Open Then
cnn.Open()
[CODE]...
Im just getting user to passing in varibles to SQL i have the below connection string and its throwing an error saying "The SelectCommand Property has not been initialized before calling 'Fill'
[Code]...
I have some certain files that my program references.I know some programs have a folder in the same place as the .exe, sometimes called "Dependencies", and in that folder there are files that the program uses.For example, take the iTunes folder.The iTunes folder in Program Files contains the iTunes.exe, some DLLs, and some folders that contain files that the program uses.How can I setup my program so that it does this? Everytime I add a file in my program it gets integrated into the .exe itself which in turn creates a huge file that lags. I want to have the .exe, and a folder which contains files that the program references.
View 10 RepliesI integrated my database in my web application. Previously I was just referring it to SQL server 2008 by defining a connection. Everything worked fine data was being fetched, calculations are done. Now when i integrated my database in the web application, problems arose.
Dim cost3 As Double
cost3 = Dataset.Tables(0).Rows.Item(0)(0).ToString
The problem is with this the error says: Cannot Convert type String "" to double. Before no such problem showed.
I have made my web site into an application.
I have disabled annonymous, on IIS6
<authentication mode="Windows"/>
<identity impersonate="true"/>
[code]......
I buit a ASP page that gets the users information who is logged into the computer ie username etc. This was using IIS6 Now I've moved over to IIS7 on Server 08, I set it up to use "Widows Authentication", however when i run my ASP.NET Page it uses the account NT AUTHORITYNETWORK SERVICE to do its work.Ive looked all over online, and cant find a way to fix this.I just want to pass the user credetials from logging into the computer, to the web.I've made sure that I have this in my web.config
<authentication mode="Windows"/>
<identity impersonate="true"/>
When I run this the site from Visual Web Developer and it creates the site, it pulls back the correct information.However, when I Then to my browser and check this and it dosent pull back the correct account, it pulls back that NT account.etc. but it always seems to pass the same wrong account NT AUTHORITYNETWORK SERVICE it should be my accountname I am logged in with.
I did a clean install and tried to get the project running again. The code ... AlteredDate = SelectedDay & "/" & SelectedMonth & "/" & SelectedYear would always work defaulting to DD/MM/YYYY before the clean install. The program now runs an error "Conversion from string "13/8/2009" to type Date is not valid.. How do I change the default back to DD MM YYYY or format it to that?
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View 9 RepliesError in VB code "Name of field or property being initialized in an object initializer must start with '.'_"
View 3 RepliesDim Current As String
Current = Directory.GetCurrentDirectory()
con.ConnectionString = "PROVIDER = Microsoft.Jet.OLEDB.4.0;Data Source = " & Current & "SchoolMaticsDatabase.mdb"
con.Open()
[code]....
If tab index is changed the sub TabSelect() is called also. One other thing is that the program checks the day of the week and correctly displays the tab corresponding to that day. On Monday this code was working fine, as soon as it hit Tuesday this error cropped up.
I have reviewed the prior post on this topic and am confused.
Private Cn As sqlConnection
Private Cmd As sqlCommand
Private Da As sqlDataAdapter
[code].....
[Code]...
This one copied from microsoft web site, is this command working...? Error like " Executive Reader Requires.......Transaction property of the command has not been initialized..."
I want to create the Excel Document (.xlsx) with vba code integrated . by program vb2008
Because I want to sort the data in some column of table when i click header of the column.
My OS is Vista Home Premium (64-bit) SP2. I've been working with VS 2010 Beta 2, wrote a few apps, and downloaded the Aug 2009 DirectX SDK. I have all of the source code for a game I wrote ten years ago (with VB5 using DirectSound and DirectInput from DX7) and I would like to get it working with the latest VB and DirectX (and use Direct2D also) but the first problem is that I can't even find how to "include" directx into a project. I was hoping to make a small example app to figure out what I need to do to update my code and what capabilities D2D has, but I can't even get out of the gate with DirectX.
View 6 RepliesI have a variable for startdate as shown below.
Dim startDate as Datetime
startDate = Convert.ToDateTime(datepicker1.text).ToString("dd-MMM-yyyy")
In the immediate window if I try Convert.toDate(datepicker1.text).toString("dd-MMM-yyyy")it is showing date as 29-Sep-2009 but the value of startDate is 09/29/2009 I really don't understand why the value is not set in startDate variable as 29-Sep-2009
Need to use the create method of the AX 2009 ReturnOrderInService web service in a vb.NET aspx page to create an RMA in AX.The code I've written below creates the RMA in AX, but doesn't show the line details in the AX RMA form, even though the records are in SalesTable and SalesLine.Is a record needed in InventTrans or is there a missing InventRefId value somewhere?[code]
View 1 RepliesI am looking to do a presentation at work to our development team. I was wondering if their is any new tool which would be easy to demonstrate. It is just an after work thing for talking about new technologies.
View 5 RepliesIs there an easy way to convert a program written in VB 4 to VB 2009 Express? VB 2008 wil not open a .MAK project.
View 7 Repliesi need to create a function for transforming an xml document using xslt. I am able to copy the document using xsl:copy-of, however it's not copying the root of the source xml document. As shown below, the root of the xml should be <List xsi:noNamespaceSchemaLocation ~>: [Code]. My IDE is Visual Basic .Net 2008. I need to reproduce the xml file with the SName attributes sorted in ascending order.
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