Insert Command Not Functional After Clear Command In Vb Report
Aug 21, 2011
User need to select their prefferable data to show in report. What i did is i have a clear command first to delete the temporary table. The temporary table is basically a table to stored user selection parameter data. After the clear command, i have
a insert command to insert user selection data into the temporary table. What happened now is when i run the program exe, first run of the report is work fined, but not the second and the following times of execution. It will return null or blank report. The weird thing is when i execute it from development environment, it seem like the report is able to pick up user selection parameter and run the report for the first times and the subsequent execution.
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Apr 30, 2010
First let me say that I am not sure whether or not this should go in this section or the API section, and if it needs to be moved I apologize. My issue is fairly straight forward, but for some reason I cannot get it to work.
I am trying to send a command to a command line and then submit the command. I have been trying without success to get this to work in v2008 Express and v2010 Express, Here is the code I am trying to us:
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" ( _
ByVal lpClassName As String, _
ByVal lpWindowName As String _
[Code].....
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Oct 15, 2010
The vb.net "WithEvents" syntax is very useful, but if a WithEvents field which references a long-lived object is not nulled out, it will often constitute a memory leak.Is there any easy way for a Dispose routine to have vb.net automatically clear out all WithEvents fields and unsubscribe them?
I've figured out a nice way to wrap the creation of disposable fields so that they will be automatically Disposed when the containing object is disposed, without having to individually list such objects. Is there any way to take care of WithEvents fields without having to manually null them out in the Dispose routine?
EDIT:Since there was no response indicating a built-in way to do it without reflection, is there any built-in means of using reflection to determine whether a particular property is a VB automatic implementation of a WithEvents "field"? I know that a WithEvents "field" called "foo" is implemented as a property called "foo" and a field called "_foo", but that's such a common naming pattern that I wouldn't count on it. Is there some attribute that could be used to determine which properties need to be auto-nulled?
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Dec 18, 2010
could someone tell me what i am doing wrong in this codeProtected Sub insert_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Insert.Click
[Code]...
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Jan 16, 2010
I seem to be banging my head with this INSERT INTO command:
[Code]...
when I try to run the code. Can anyone see anything wrong with what I'm doing as I don't fully understand why it's throwing this exception.
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Feb 23, 2009
I am trying to use the insert into command in VB.net and having cod error on the following code.
"INSERT INTO xyz.TblPayHistory (prac_no, Num_pats,PayAmt,Period_startdate,Period_enddate,PayRate,PayMethod,PayAccNo,PaySortCode,PayDate,Type)"
"SELECT prac_no,
[CODE]...
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Dec 8, 2009
so I have this code here which is *supposed* to save the contents of the user details form into an SQL database. However, when I run the program, always gives the following error:
[Code]...
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Mar 17, 2010
I am currently using psexec.exe from PsTools to send a command to a remote system to fire a command through a command prompt however I am finding that the shell I am doing does not seem to like the spaces in the path.
[Code]...
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Oct 16, 2011
I am new to vb.net. what I tried was print data in cristal report according to the ascending order of index number
[code]...
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Nov 8, 2007
Any ideas on how I handle the following error thrown in the SqlDataAdapter.Fill as a result of the BeginTrans in the callee?
System.InvalidOperationException = {"ExecuteReader requires the command to have a transaction when the connection assigned to the command is in a pending local transaction.The Transaction property of the command has not been initialized."}
[code].....
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Jun 30, 2010
Public Sub ExecuteTransaction(ByVal connectionString As String) Using connection As New OleDbConnection(connectionString)
Dim command
As New OleDbCommand()
Dim transaction
As OleDbTransaction
[Code]...
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Feb 24, 2010
I am using the following code to run defrag and to analyze if the C: drive requires defragmentation:
Dim analyze As Process = System.Diagnostics.Process.Start("C:WindowsSystem32defrag.exe", "C: /a /h /u /v")
This process runs through analyzing, runs it in normal mode & prints the progress to the command window.
My problem is that as soon as the process is complete the command window closes. I need it to stay open so that I can read the results.
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Mar 11, 2010
I am trying to send a command to the external command line (cmd.exe) from the Windows form application that I'm writing in VB.NET (using VS2008).
I can only access the external program thru the command line (its not my program) and I must do so from a form app.
I am trying to use the following code. I am able to call a cmd.exe window, but I can't pass the command line my command.
Using mp As New Process
With mp.StartInfo
.FileName = "cmd.exe"
[Code].....
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Feb 23, 2012
I have two tables and the form contains a text box so I need to add rows of Table 1 to Table 2 and taking the value in the text box for each row is added to Table 2.
i have insert syntax but it is need to modification:
INSERT INTO table2(column3,column4)
SELECT column1 + @parameter
FROM table1
[Code]......
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Dec 8, 2009
I'm running VB 2008 express, I'm connected to a MS access 2007 database. I get the following error
Syntax error in INSERT INTO statement.My code is as follows
Imports System.Data Imports System.Data.OleDb Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
[Code]...
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Nov 23, 2010
i am using the following query as the insert command for a dataset linked with a DGV,
INSERT INTO [Template]
(GrpId, GrpName, GrpNum, Code, Name)
SELECT (Select t0.GrpId from Header t0 where t0.GrpName = @grpName ) AS GrpId,
@GrpName AS GrpName,
[Code]...
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Jun 22, 2010
i'm still developing my project bout evaluation of employees. I'm using the code below,I want to multiply the values of the two specific row/column inside my datatable and then insert the product in the KPIGRDEQUI field in the KWEEKDTL table.Is it possible to be done?
[Code]...
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Jul 22, 2011
the codes run with no errors, but the data is not save in the sql server table event though the codes run.Dim connection As New SqlClient.SqlConnection
connection.ConnectionString = ("Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\DB.mdf;Integrated Security=True;User Instance=True")
connection.Open()
Dim command As New SqlClient.SqlCommand
command.CommandText = "INSERT INTO [studentsummary] (sum1,sum2) VALUES (@sum1,@sum2)"
command.Connection = connection
[Code]...
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Sep 23, 2009
how to write the AT command in the serial port. I have connect a modem to the comport. I have this code that I get from my teacher. But it does not show any AT command in the code
Private WithEvents serialPort As New IO.Ports.SerialPort
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'---display all the serial port names on the local computer---
[code]....
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May 25, 2012
I'm trying to use a VB button to insert data into a database, but it keeps bringing up the error message I have in place for exceptions.
why this does not update the database?
Protected Sub Button1_Click(sender As Object, e As System.EventArgs) Handles Button1.Click
Dim connetionString As String
Dim sqlCnn As SqlConnection
[Code]....
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Mar 27, 2012
i have my insert command but when ever i run it and click the button i get the messge "ExecuteNonQuery: Connection property has not been initialized." Here is my code:
Private Sub btnRent_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRent.Click
Dim constr1 As String = "Provider=Microsoft.ACE.OLEDB.12.0;" & "Data source = test.accdb"
[code]......
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Jul 1, 2009
Im trying to insert a row of data into a table in a mySQL Database.I finally got the syntax right, but now when I try and run it i get the error:Error: Unknwon Column textID.text in field listI am using the following
Try
cmd = New MySqlCommand
cmd.CommandText = "INSERT into STAFF (ID, Name, Address1, Address2, Address3, Post_Code,
[code]...
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Jan 16, 2010
I want to add a new select command to my dataset. To do that, I have added a new partial class to my project. Because we have to use partial class if we want to extend generated dataset codes. [code]...
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Feb 4, 2011
I am using a CheckedListBox that is populated with Filenames (full path, i.e. C:TestTest.jpg)When I have the files that I want in the CheckedListBox I wish to click a Start Button which will process the list one at a time using an exe program that runs on the Command Line. There are arguments that need to pass to the command line as well as the file location in order for the program to process.I currently have it working but the issue is the loop finishes quickly and it is left up to the CMD.exe to finish the process. What I would like is for the LOOP to wait until each file completes processing before passing the command for the next file in the CheckedListBox.There some reasons I wish for it to work this way.
1) I would like to have a button that can Pause/Restart the Loop.
2) I would like to have a button that can Stop the Loop so the whole process can end.
3) I would like to have the Loop remove each file one by one from the CheckedListBox after it has been processed.
4) I would like to display a Message once all the files have been processed.
5) And if it were possible I would like to report the status either by text or a progress bar showing where it is at in the process.
6) And the ability to add some error handling if possible.
Since the Loop finishes so quickly as it just passes the command to the command line using the & as a seperator it is the command line that is handling the rest of the process. Because of this there is not control over it in the GUI.The code I am using allows the Command Line text to display in the Form so it won't open up a seperate window to run CMD.exe. This is the desired affect as I would like everything to appear to run from within the Form itself.
[Code]...
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May 18, 2009
i have seen this in many codes, just not sure where to start and how to call the command. what i'm talking about is having code as such (this is for save file dialog):
[Code]...
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Feb 3, 2012
I am developing vb.net windows application. I am trying to insert data with insert command.I am getting the insert data as long as the application is running. But when i close the application and reopen again the inserted data was not in the access database and i am getting no result. what is the problem, is it in code? i am using like
strsql=" Insert into table(col1,col2) values(val1,val2)"
selectCommand as new oledb.command(strsql,strConn)
selectCommand.ExecuteNonQuery()
Not inserting in the database but showing in application. how?
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Feb 23, 2012
I have two tables and the form contains a text box so I need to add rows of Table 1 to Table 2 and taking the value in the text box for each row is added to Table 2.i have insert syntax but it is need to modification:
INSERT INTO table2(column3,column4)
SELECT column1 + @parameter FROM table1 WHERE column2=true
table1: column1 column2
[code]....
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Jun 22, 2010
I'm using a form to throw info straight into a database. i know it isn't the best way but i'm new and all other implementations have confused me (i've been reading and watching tutorials for 2 weeks) but anyway i'm going to take the info straight from the form.
mports System
Imports System.Data
Imports System.Data.SqlClient
[code].....
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Jan 4, 2010
I am having a problem with adding a record to a customer table in a Microsoft Access database. I have worked for hours reading my textbook and troubleshooting to no avail. The copy and paste below from VS is a little messy. When I execute this code below the record is not added and I do not get an error of any type. When I go into debug mode, all of the parameters are correct and everything looks good. If I open up Access I can manually add the record but using my program nothing happens. All datatypes are string in VS and text in Access.
First an instance of the Customer Class is created and this seems to be successful. But when I take that customer object and run the AddCustomer method of the customer class it is not successful in that the database does not reflect that the record was ever added. [Code]
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Jul 22, 2009
Here is hte code I'm using to insert into my database:[code]I believe it is Cell 4 that is causing the exception, because it is a checkbox column and i'm not sure what syntax to use to store the "CheckedState" of it.Yes, I know I should be using parameters, but I don't know how yet, and I would like to make the INSERT statement work before implementing the paramater approach with it.
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