Private Sub frmbranch_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
Try str = "select * from EnquiryEntry Where EnquiryId=" & EnquiryId & ""
[code]......
I've got a typed dataset. I bind the data with a binding source to a form with arround 200 textboxes, dataedits and so on. Everything works fine with one exception:In my database I have empty DateTimes (DBNull.Value). And when they get bound to a DateEdit-Control, I get the following exceptions:
A first chance exception of type 'System.InvalidCastException' occurred in Microsoft.VisualBasic.dll
A first chance exception of type 'System.Data.StrongTypingException' occurred in myTestDLL.dll
I tried to change the NullValue-Property in the DataSet-Desinger to something else as 'Throw Exception', but it doesn't work for a DateTime. For other types like Integer or String it works fine.I dont know a nice solution (right now I fill the empty dates with some dummy date and make it invisible in the DateEdit-Control, but this is very uncool) and I hope to find some help here.
I have tried everything I can to get beyond this error which shows below as <<<<< error here. It is trying to fill a dataset from a data adapter. If I change the SELECT statement to just SELECT * FROM xTable I get the correct number of records in each table. But anytime I try with a more complex statement I get the error message shown below which indicates System.Data.Common.DbDataAdapter.Fill(DataSet dataSet. I've completely erased all data and entered a new set of test data so I know there is no problem with relationships. Each table has primary key which is foreign key in other table. IS there something wrong with the Imports section: Imports System
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I need to pick all data in my application from my database and use it in my form
my question : how to pick all data in my application then i use it
My problem is that some code I enter will not be executed. Here is an example of my Form Load event. If i debug the code then the first two lines are executed. The MsgBox won't be executed though. or anything else after it. My programm does run perfectly. But i cant make any changes anymore It's driving me nuts, I don't have the faintest Idea what could be wrong. I sent the code to a friend and he isn't having any problems at all. We both use win7 64bit (he has ultimate, i have home) [code]
View 2 RepliesFor intOuterCount = 1 to 5
For intInnerCount = 1 to 4
intTotalCount +=1
Next
Next
I have a hashtable of a class that contains a timer. When this timer elapses x amount of time, it calls a subroutine within the class. This subroutine calls several other functions and subroutines and then its done until the timer elapses again. Now one of the subroutines updates a label on the form and i can see that happening when its supposed to. There is another subroutine that should be updating another label but it is not. I believe this would be a simple correction but when i set a debug point on the routine it does not work. I'm not going to post the code for this as it is hundreds of lines of code and its probably just a configuration in the IDE that got changed somehow.
I run break points around the rest of the project just fine, even in other classes that use timers. Does anyone else have this problem of code being executed but not being able to debug it?
I have a project with 2 forms. I need the code to be executed on one form first, which is why it is run first, then I want to hide it and just display the user interface form. I have the following code, it makes both forms appear, but I only want the user display form to show: [code] I call both these subs in the frmLoad of the Processing form.
View 3 RepliesI'm trying to use Subsonic 3.0.0.3 with an existing web site created in vb.net. I've added a reference to SubSonic.Core.dll and added the ActiveRecord tt/ttinclude files. I also added a contextmenu entry to run the t4 templates using instructions I found here.Whenever I try to run any of the tt files, I receive the following exception. Does this have something to do with me using a web site as opposed to a web application?
f:Documents and SettingsdbollardLocal SettingsTempSQLServer.ttinclude(85,15) : warning CS0219: Compiling transformation: The variable 'parameters' is assigned but its value is never used
ActiveRecord.tt(0,0) : error : Running transformation: System.InvalidCastException: Unable to cast object of type 'Microsoft.VisualStudio.TextTemplating.CommandLine.CommandLineHost' to type 'System.IServiceProvider'.
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I use this code to populate combobox1&2:
'Main form on load events
Private Sub frm_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
[Code]....
I have a form that on load keeps closing without any errors... I have no clue what it wrong with it. How can I record all the lines of code being executed so that I can find out why it is closing. There are no errors or me.closes.
View 3 Repliesdoes anyone know how to solve this kind of issue?if i add code to an existing code in my control/function/subroutine it will not executed and also if i delete some existing code in my program the code is still executed even though i delete it..
View 5 RepliesI'm totally baffled why my next line of code is not being read after I use the .SubString method.
First, I read a webpage using WebBrowser.DocumentText
Dim TextString As String = WebBrowser2.DocumentText 'Converts page to html text
Second, I search for the string "Price"
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Is it possible to stop a Sub from executing its code when you, for example, click a button?
Example:
Private Sub ExecutedCode()
'doing things here
End Sub
Private Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click 'how to stop ExecutedCode() from being executed?End Sub
The documentation for an API I am using explicitly says that I need to call close() on an object when I am done with it. I would also like to log something there.I understand GC, might not happen at expected time, etc. etc. I still want to implement some code at cleanup.I read that I need to Override Finalize() to do this.I wrote a console app to test and it looks like it indeed works.However, this does not work with windows forms. I put a break point and it never gets hit in the Finalize method.How do you add some code to be executed at cleanup time for a window form?Here is my console app test:
Public Class Foo
Public Sub New()
Console.WriteLine("In Foo Constructor")[code]......
I have a backup script i made in VB. part of the code im having trouble with:
HTML
code:
Now this code is executed when a button is clicked, if the folder does exists, it displays a message and continues the backup. however if it does not it displays displays "does not exist box" then i want the application to close.
I played around with the application.exit commands but it seems like the code just skips over it, and continues to try and backup the data, then errors out. how do i make the application close, if the dir does not exist?
How do I wait until the report has finished rendering before the rest of the code gets executed?
View 5 RepliesAim to Achieve : I want to have 3 different dataTables from 3 different SQL queries from 3 different places into 1 single DataSet which I will have to return form my function.I have :
Private Function getDataSet()
Dim ad1,ad2,ad3 As Object
ad1 = New Data.OleDb.OleDbDataAdapter(query1, conStr1)[code].....
I want to use the best possible implementation of above task.
I have a need to assign values from my dataset to a variable but when i use string (which its normally text) and the item in that row of the dataset is empty it tells me that conversion from DBnull to string is not valid
View 2 RepliesI've added a Data Source to my project and a table from that Database (SQL 2005)
It is a rather large table and takes a LONG time to load the form. I was thinking of loading the auto-generated "Fill" statement in a Backgroundworker, but it doesn't seem to be doing anything. I have the Fill statement in the DoWork event, but it never "finishes" it seems. My BindingNavigator stays at 0.
I looked at jmc's sig link and everywhere I look, it seems like I'm going to have to iterate one at a time, but how can I do this for a bound datasource?
i have the following code to fill two comboboxes using one dataset:
Private Sub sub_cbo_type_load()
Dim ds As New DataSet
ds = cls.cbo_type()
[Code].....
the problems is: whenever the index is changed in one combobox, it's automatically changed in the other one too.
in my project i use odbctabaleadapter and connect to dbf file (connection string is "Dsn=test;dbq=C:;defaultdir=C:;driverid=533;fil=dBase 5.0;maxbuffersize=2048;pagetimeout=5) to convert data from dos to windows but it seem befor display data in datagridview dotnet converted data to unicode
if its true , can set System.Text.Encoding to default in tabaleadapters ?
when i convert from txt file as this code convert process is complete
Public Function stowin(ByVal inFile As String) As String
Dim fileSize As Long
Dim en As System.Text.Encoding
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Just trying to work out how to build the list from a seperate column in a linked datset to a checkboxlist, the same way as you can with a combobox?
So you can take the dropdown list for the combobox from another column and I thought it would be the same for the checklistbox but it does not seem to be an option.
I think what I have here is an environmental issue. When I attempt to fill a dataset from a VFP table I am getting an error message that says "Index Not Found". The reason I feel its environmental is because the process was working perfectly fine last week. The client I am trying to run this program for runs it once per month to integrate one of their FoxPro systems with SQL. It's been in working order since November of last year, but suddenly now I'm getting this error. Some things I have looked at already are updating VFP drivers for both OleDB and ODBC.
'--- FOX variables
Dim cnFOX As OleDbConnection
Dim cmdFOX As OleDbCommand
[code].....
fill a NEW DataSet's DataTable with data from a DataGridView? I am generating a data report that uses that "new DataSet." I need to go from a DataGridView to a DataSet because i need the person to be able to perhaps edit the information before its inserted into the report. my process to generate the report is...
- fill datagridview with advanced join sql
- allow user to edit datagrid if necessary
- put datagrids modified information in new dataset
- set report's databinding source to new dataset
- generate report...
I think this may be a usual issue but I am not able to find much info. There is a master customer database and a call log database at work. The call log database has two tables that are updated from the master database monthly. Now I am writing this vb frontend for the call log database and cannot figure out the update portion
For p = 0 To maxrowsC (currently around 1000 rows)
With myCommand.Parameters
.AddWithValue("@HEATSeq", dsCallLog.Tables("ConfigDS").Rows(p).Item(0))
[code].....
I need to fill a datatable(in data set) row by row by providing the the data by variables in VB.Net. The variables assigns its value by loop.. so the datatable row should be filled row by row until the loop ends. There are three columns in the table. so the table should fill with different kind of datatype variables.
View 1 RepliesPublic Class stat
Dim WithEvents connection As SqlClient.SqlConnection
Dim connectionString As String
Dim da As SqlClient.SqlDataAdapter
Dim ds As New DataSet
[Code] ....
I am trying to fill the dataset by calling the stored procedure "top5_best_selling_products" but the connection is not closed so the error is with the adapter or something.
this is more a theoretical question i asked myself.I remembered that BinarySearch of an ordered List(Collection in general) is faster than finding Rows with Datatable.Rows.Find or DataTable.FindByPK with a primary key value.Hence i fill a Datatable from Database in a shared constructor and immediately after that a List(of Int32) that contains all primary keys from that table. Later i will check with BinarySearch if the List contains primary-key values. But because the datatable contains only the PK-Column anyway, i asked myself if there is a way to avoid the huge overhead of filling a Datatable and after that adding all Rows to a List. Is it possible to fill a generic List(or other collection-type) instead of a Datatable/Dataset directly from a Dataadapter?Maybe i'm off the track and there is another way to avoid the Extra-Loop that i'm missing.
The code of filling the DataTable in a strong typed Dataset and the List:
Private Shared w205CorrectSWUpgrades As New List(Of Int32)
Shared Sub New()
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i try to use this yesterday it work fine..now, it will process too slow.. when fill the dataadapter into the dataset..here is the code it gives 20 menutes still no result.. "no error, no comment. it's like standby
Dim conn1 As MySqlConnection = New MySqlConnection("server=pc1;user id=user;Password=12345;persist security info=True;database=mytsmobile")
conn1.Open()
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