I'm developing a mobile website using vb.net but having set my tools right as I read somewhere, I've having an object reference...null error from the sqladapter line. I'm trying to authenticate by checking the db for username and password and granting or denying access asthe case maybe, [code]
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SMS Sending application in vb.net using GSM Modem of Mobile & AT Command where mobile numbers are dynamically coming from sql server database.
View 1 RepliesI would like to create a mobile application for Windows Mobile, how can this be done? I have Visual Basic Express edition.
View 4 RepliesI have a question about how to properly deal with errors. I am working on a three tiered application. If an error is created on the data tier, I would like to pass the error to the business tier and process it there.What is the best method to accomplish this? I am using .net 2.0 and visual studio 2005.
View 1 RepliesWhy would my try-catch block still be throwing an error when it's handled?[code].......
View 8 RepliesCan someone please explain to me what this error means? I am new to VB programming and don't understand this. Error : Type 'var' is not defined
Here's my code
[Code]...
My code block is below. As it turns out, rdrCurrentRate.GetString(12) is a null value, but the code block throws an error. "Data is Null. This method or property cannot be called on Null values."My intention is to write "if rdrCurrentRate.GetString(12) is NOT NULL, then sCurrentRateType = rdrCurrentRate.GetString(12)"
What am I missing here?
If Not String.IsNullOrEmpty(rdrCurrentRate.GetString(12)) Then
sCurrentRateType = rdrCurrentRate.GetString(12)
[code].....
I cant see what is wrong with my SQL statement syntax [code]...
ERROR [42000] [MySQL][ODBC 5.1 Driver][mysqld-5.1.41]You have an error in your SQL syntax;check the manual that corresponds to your MySQL server version for the right syntax to use near 'Int,Agi,Money) VALUES('MyUsername','MyPassword',0,0,0,0)' at line 1
I'm passing in a sql command such as "EXEC StoredProc 0" into a a function called ExecMyCommand where StoredProc is a stored procedure taking a parameter of 1 or 0.It works fine with the following code.I had tried to judge success by looking at NumRowsAffected but soon realized that the -1 could represent a successful run even if -1 was the return value.So then I changed the code and return mLastRunOutcome = False if there is an error.So for testing I changed the name of the SP to like StoredProc2 in the database and ran the same command "EXEC StoredProc 0" and to my amazement, no errors were thrown in the code below..Of course ran the same command in Query Analyzer and it barked that there was no SP by that name.How do I know when a command ran successfully or not in code here? and Why didn't the ExecuteNonQuery throw an error when the command was not right??[code]
View 2 RepliesIs there a command that will stop the execution of my program?
I have a service that is processes an exchange account via telnet every 10 minutes. During one point of execution the application could possibly have a response from the telnet session when there are NO e-mails in the folder, which would look something like this[code]...
So is it possible for me to just stop my application at that point since there's no point in continuing if there are no e-mails in the account?
I am trying to read all selected items from a listbox in Visual Basic.
Dim x As Integer
Dim testValue As String
testValue = "20"
[code].....
When calling API's or other external functions it is only possible to get thrown errors using "GetLastError". I made the following function for this:
[Code]...
I have a vb.net windows application. I want to convert some part of it to an application that can be run on all mobile platforms like iphone,windows mobile, ipad etc. It should be platform independent
View 1 RepliesI have been trying to assign value to an object array that is defined as follows.Dim englishTextAry As Object(,) = New Object(,) {}I am looping through a dataReader and trying to assign the values to this array with the following code.[code]But the ReDim is throwing an error on dataVal not being an Integer.What am I doing wrong here? Can anyone point me in the right direction?
View 2 RepliesI have an application that is written in VB.NET, using the System.Windows.Forms.Form as the front-end GUI. It runs perfectly on my Windows machine however recently there is a business requirement to convert this application to run as a web application so that people could view them in their blackberries when they go to the URL. Is there any quick way to perform such a conversion or I will have to translate the code line-by-line for such cases?
View 1 RepliesI never got into detailed error processing too much when I played in VBA/VB6 a lot. Mostly then, if you ran into a user error (such as some input of theirs failing a validation test of some kind), you popped a MsgBox() with some error information and the critical (or warning) icon, and safely aborted out of the code
In .NET, my reading basically points to exceptions as the end-all in error handling. It looks to me that if you know a spot of code where a user can screw up, you're supposed to catch it with either try...catch blocks (for things like data conversions), or standard if...the...else constructs for other things, and then throw a new exception if needed.
Isn't throwing an exception essentially a forced crash of a program in a sense (granted, you get the option of continuing)? Or are exceptions geared specifically for things like data conversion errors and other "things that shouldn't happen", and resume use of MsgBox() and friends for minor user screwups?
Consider the case of where you have a TextBox that is only supposed to accept numeric data (or heck, just a specific set of characters). Barring some other trick that lets you restrict that field (let's just assume it's freeform, programatically), it would seem a bit of a waste to throw new exceptions everytime they type in an invalid character, or even if the error checking doesn't happen until they press a submit button (like on a webpage). Popping a MsgBox() seems more sane in that case.
So what's the straight dope on exceptions and throwing new ones on user errors? How about if your program also exposes a programmatic framework? Bad usage of one of the programmatic functions definitely seems like new exception territory to me.
Number of downloads: 81This program is supposed to calculate the ever popular mortgage payment and amortize the loan in a list box. I keep throwing this error "Missing Member Exception" and can not find out how to fix it anywhere. Because of the error I can't even see if I can even get a calculation in the text box, let alone if the amortization will run. The purple text is where the exception is.
Public Class HarlessSmithIA3
Dim LoanAmt, Int, Result, Term As Double
Dim txtIntRate As New Object
Dim txtLoanAmount As New Object
Dim txtLoanTerm As New Object
Dim txtMonthlyPayment As New Object
[CODE]...
I am fresher in Vb.Net But I am not cleared regarding use of SqlDataAdapter
View 1 RepliesI work with Visual basic 2010 express and Sql server 2008 Express
I established Person and Specialist tables data base .I want to make Insert /update/ delete
Here object declarations in a module :
Public str As String 'string sqlcommand
Public con As New SqlConnection("Data source =SaraSQLEXPRESS ; initial catalog= ADHD_DIAGNOSIS_SYSTEM ;Integrated Security =True ")
Public com As SqlCommand
[Code].....
I dont know use application.restart() in vb.net i dont found this command
View 2 RepliesHow can I read SMS from mobile with my .net application? i have a Nokia 5310 mobile phone. Can you tell me from where i can download Nokia SDK or source code or Nokia API etc?
I want to make a custom application which reads SMS and at the same time sends a response to the sender's mobile number.
I would like to develop a very very very simple application which will connect the MS SQL SERVER in my notebook and will be run at hand terminal-with windows mobile 6.Here is the code which i used :
Dim strSQL As [String] = "SELECT COUNT(studentid) AS totalp from Students where gender='m' "
' Dim Conn As New SqlConnection("Data Source=10.0.0.4MUSTAFASQL2;Initial Catalog=MYDBX;User ID=TEACHERA") <<< i used this too,
' Dim Conn As New SqlConnection("Data Source=10.0.0.4:1433MUSTAFASQL2;Initial Catalog=MYDBX;User ID=TEACHERA;") <<< and also tried this[code].....
i need to send datas to mobile application developed using java can i send datas from vb.net windows application to java mobile applications can anyone tell me what is the simplest and secure way to send data from vb.net windows app to java mobile app
View 1 RepliesFirst of all I want to thank "codeorder" for sharing me this code. Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
[Code]...
Is There Anyway To Use The TableLayoutPanel Control In A Mobile Application
View 1 RepliesThe following code loops through the rows of a datatable to process each record which has a Processed column value not equal to -1. When a record is processed, its Processed value is updated to -1. As a record is processed, the code within the Do Loop may add a new record to the datatable with a Processed column value equl to 0. All of that works as intended. My test set record gets processed and a new record is added.At the end of the For.Next code, there is a line , "clsWTAdapter.Fill(clsWTDataTable)", which I intended to refresh the rows so that it would include the newly added record which would then be processed during the next iteration of the For...Next sequence. This is not happening. What am I doing wrong, and how can I refresh the rows and process the newly added records?
I found this line in an MSDN page about DbDataAdapter Fill Method (DataTable) at [URL]"The overload of Fill that takes DataTable as a parameter only obtains the first result. Use an overload of Fill that takes DataSet as a parameter to obtain multiple results."Does this mean that I am on the wrong trackby using a datatable where I should be using a dataset? Does "multiple results" mean filling the dataset multiple times like I am trying to do with the datatable?
Using clsCnn As New SqlClient.SqlConnection("Server=REXSQLEXPRESS;Database=dmf;Trusted_Connection=True;")
clsCnn.Open()
Dim clsCmd As New SqlClient.SqlCommand
[code].....
i would like to build an inventory manager application that would have two versions :1. Would run on the desktop 2. Would run on windows mobile 6 I would like to have both these versions store and read data from a database that can be stored centrally either on a webserver or somewhere on the LAN.
I would like to know can i use Access as my backend database or sql server ? will windows mobile app be able to access it and read and write to it Note : I would prefer to create only one database that will just store the details in the tables and do not need any other functionality. All functions such as save,edit,delete,search,filter etc with be done from the FRONT-END VB.NET interface ONLY If you suggestion involves the use of 2 databases such as one for desktop version and one for windows mobile then please also tell me how would i sync the data between them.
How can I create application for Nokia mobile phones
View 1 RepliesI want to create application to send message to Mobile by SMS , But I didn't know what the requirement for this and what the steps to make this application?
View 1 Repliesmobile phones attached via USB odr WLAN or BT do no support TAPI
I have 2 questions:
1. is there an possibility, to send a call-Command to my mobile phone (Windos Mobile 6) ?
2. when i click to a "callto:"-link in my sugar-crm - skype opens is there a way to tell windows to open a different application ?
