I read that by using queries instead of SQL, the form can load faster, however, I have this code that has categories and sub-categories how can I shorten this code to have the form load fastr?
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I am loading images from the internet. I am using PictureBox1.imageLocation() but it takes a while to load the image. Is there a way i can load the images faster? it shows an error icon before it displays a picture...how can i get rid of that?
View 6 RepliesHow to load asp.net webpages faster using .htaccess.what was the coding for .htaccess so that the webpages loads faster ..i have hosted my site on ...ixwebhosting
View 1 RepliesOK, I've been searching for hours trying to find the best way to fill a listview from a comma delimited file but have come up empty handed so far. Currently I am using code I found on the NET, which works, but it is EXTREMELY slow. As a test, I created a file with 5,000 rows, and 10 columns. The column layout is as follows:123,NAME,NAME,NAME,NAME,0.00,NAME,YEAR,NAME,1
Dim ofd As New StreamReader(".dataCardData.bct")
Try
Using reader As New Microsoft.VisualBasic.FileIO.TextFieldParser(".dataCardData.bct")
reader.TextFieldType = FileIO.FieldType.Delimited
reader.SetDelimiters(",")
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The code I am currently using appears to be loading the file and somewhat simultaneously filling the listview at the same time. I feel that I should load the entire file into an array or arraylist and the send the array or arraylist to the listview. However, if this is the best way to do it, I have not been able to find any examples of how to do this.
For a touchscreen oriented application, i have an onscreen keyboard that can operated by both the hardware keyboard, or via touchscreen/mouse. The user needs this keyboard a lot, but. Because it has so much buttons, it loads really slow and takes about a second to finally display.
My Onscreen keyboard is of type dialog, and its background is set to the transparency key. Once the form is there it works really well. the problem is the 1 second loading time, this can be pretty frustrating when you need to edit like 20 things. Is there any way to preload the keyboard dialog and make it popup instantly?
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I am new to VB.net and want to know how I can execute SQL queries from within VB.net code. Example: I want to update some records in a table using SQL query on the Form Load event.
View 2 RepliesI have a few subs that run under Webbrowser1.document completed section of my app I know the code words because I tried it out using a new project and tied the code to a button and it works great. After stepping into my code during run time it appears that the app is trying to call my sub before the next page appears. What would be the way to place a pause on the Thread so that the web page can catch up before running the next sub?
View 3 Repliesi want to know, which way program runs faster1- add image to button through its property -> assign image from project resource file2- on form load event, assign images to buttons, from project resource file
View 19 RepliesI'm writing a game in VB 2005 Express and at the moment it involves using the drawimage method to first draw a background and then various sprites onto my form every time a timer ticks. It's all double buffered so there's no flicker or anything but it just goes very slowly, how to speed it up. I've come across the term blitting (bitblt), which seems like it would be useful, but haven't been able to work out exactly what it is, whether it can be used in this version of vb, how to use it etc.
Here's my code (or at least an approximation of the relevant bits seeing as the whole thing is rather long):
Public Class Form1
Dim BackgroundImg as Image 'plus all of my sprite images declared
Dim Mybuffer As BufferedGraphics
Dim MyContext As BufferedGraphicsContext
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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Imports System.Data
Imports System.Data.OleDb
Public Class Form1
Dim con As OleDbConnection
Dim cmd As OleDbCommand
[CODE]...............
The insertion part of the form works great. But my problem is in the form load part......If i leave a field blank(Null),then perform Save operation,close the form after successful insertion and then reopen the form,then it retains the previous values during the form load......This is only in case where i leave a field blank in the previous data entry in the database.......But if i enter values in all fields then form load is working great.
How can I load a form and allow it to run it's code in the form load but keep it not visible. I want it to do what it needs to but but not display.
View 3 RepliesI am writing an application that on first time run checks if a user is in a database. If the user exists it closes itself.I was wondering if I could pre load in vb .net a current or up to date query from the database. That way I dont have to open that initial connection to the DB.
View 4 RepliesHow can I pass a paramator to another page without using Session variables or passing the Querysting in the URL?
View 1 RepliesI am new to LINQ, but have been able to query SQL using LINQ to SQL and then I can data bind the results to a GRID or DROPDOWN LIST with no problem. What I would like to do is load a column into an array. I have seen examples for something like this in C#[code]...
View 12 RepliesI'm using VB.Net and have the following LINQ Query...
Dim ACFTTail5 = (From tailcounts In db.TailCounts _
Where tailcounts.Model = "UH-60A" _
Group tailcounts By _
tailcounts.Tail, tailcounts.Model _
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But get the following error...
"Unable to cast object of type 'System.Data.Linq.DataQuery1[VB$AnonymousType_42[System.String,System.String]]' to type 'System.String[,]'."
I would like to load a default created image at start. But seems to not be working on form load any ideas.[code]
View 5 RepliesSynopsis: I have a report generated from the report wizard in VB that works, but I only want to load data from the same department as the current user.
Details: The application connects to MySQL using the MySQL Connector/Net. I have a users table in the database, one of the fields is "Dept_ID." The report I currently have works loads data and everything fine, but I only want to load some of the data from the table, specifically where Dept_ID matches the current user's Dept_ID, basically adding the "WHERE" clause to the select statement.
I used the report wizard to generate the report and data table, etc, just followed from step one. I've looked around and have found something about using parameters, but can't seem to figure out how to pass a variable to the parameter, or if that is even the best option. Using the wizard, I don't have any code to show for it and the report works like it should, I just need to figure out how to configure it further.
your life whatever you are doing.I have a big question. Well, it's a big job for me. I tried to google and follow some tutorials frist but finally realise rom stackoverflowers.I have a one big xml file such below. I have no control over its structure as it already exists with data.
<?xml version="1.0" encoding="utf-8" ?>
<root>
<Category Cat="A">
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i have a one two many relationship on a form that loads empty so that the user have to do a search in order to populate the data into the form. To acomplish this, i created a filter (query) in the dataset. The filter works fine for the parent data, but how can i load its corresponding child data?
This is the code generated automatically when i created the filter in the DataSet:
VBCode
Try Me.TblConfidencialesTableAdapter.Buscar_Confidencial(Me.ConfidencialesDataSet.tblConfidenciales, TablillaConfidencialToolStripTextBox.Text)
Catch ex As System.Exception
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I have a couple of tables in a sql server database and i want to load the data from them in form load.
Here is the code i use to load the first table
connection string here
Con.Open()
Dim objCmd As New SqlCommand("SELECT * FROM Customers", Con)
Dim cust As SqlDataReader = objCmd.ExecuteReader()
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I am using VB2008 Express and a MSSQL Server 2005 db by the way! I have a comprehensive SQL statement, which should fill my Grid:
DECLARE @Sum NUMERIC(9,2)
SELECT @Sum = SUM(I_LS.lmenge)
FROM dbo.lfs AS I_L
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Now here is my problem! I want to have a form with a datagridview that displays all of the values I am querying. This shouldn't be a problem I guess. However, I have no idea how I can integrate two textboxes that can be used to enter the selection criteria (WHERE I_L.lfsnr LIKE '%1253') AND (l.sped_journal = '11-08')[/SIZE]. I have googled and read many threads so far but didn't stumble upon anything that would suit my needs and answer my question. Maybe it's just too elementary!? By the way, it is very important that the input of textbox1 ((WHERE I_L.lfsnr LIKE '%1253')) is linked to 3 positions in my SQL query to define the search criteria!
The worst thing is that I don't want to have a bindingnav displayed! I do not need any delete, update or add functions just the select option, however!
How do i load the Main form of a WPF so that a seperate thread goes and gets data from the database while the form is in an apartmentstate? (drag-able / movable) I Know this is possible with opening a new window from your main form like this :
Private Sub openOrderWindow()
Dim OrderWindow As Orders = New Orders
OrderWindow.ShowDialog()
End Sub
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I've tried putting MyBase.ShowDialog() and .Show() and .9000+ other things The only benefit I've got out of using a seperate thread to load from the databse is i can see the screen right away (as oppose to it being a transparent box until it loads) but i cannot move it around or minimize it?is there any way to make it Movable while it loads?
i am asking about using the progress bar into the status bar to move when i load any child form inside the MDIParent form.
View 1 RepliesI have two forms. Form A and Form B. Form A has a datagrid that is populated from a SQL Database Table query. When a button is pressed Form B is launched that allows you to add a record to the database table. I need for the datagrid to be refreshed and show the newly added record when I close form B and go back to the parent.
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i am having an issue populating two combo boxes on form load. The program will connect to an access database and pull data as instructed. Then as it pulls each record it puts it into the combo box.
This was working.. atleast i think it was. i dont recall it ever not working, however i wasn't looking for it.
My problem is that if when i load the MDI parent form and have it skip the selection form and the login form and load the next form in the sequence, it loads everything perfectly. However if the select form is loaded first, then the login form and then the form i need loaded, it will not populate. The only difference between the two different loads is that the login form calls a function that loads the form as a new project.form
I did this so that I can have multiple forms open at a time. I am assuming my problem is that I need to get the child forms handle then populating controls using that handle? but i think if I had to do that then I would beable to populate the comboboxes on the first form load using the login method of opening the form.
Here's my code.
vb.net
Private Sub frmLine1t5_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.Text = "Line " & LineNumber & " Test Form"
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I want to load a child form which is a login form by default when the parent form is loaded.Right now when I click new file on the toolbar of the parent form, then only the login form is loaded but i want it be loaded by default without clicking anything.
View 10 RepliesI am after some code to load another form when the user closes the current form. I have tried this
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I fear that there is something obviously wrong with my code, but I have come across a situation where the Form.Load event is not firing when I create and show my form. The form is not subclassed (as I've seen some problems with that in some searches), and I am not getting any errors thrown when I step through the code in the debugger.
I have a break point set on the IDE-created form load function (which does have the Handles MyBase.Load signature suffix) but the breakpoint is never reached and the form does display and work.The form is passed three arguments in the constructor but the IntializeComponent() function is called before anything else is done.
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I have a small program which draws some lines with a method called: Drawlines But Now I want to call this method in the load form routine. So if the form is loaded the lines should be drawn in the picturebox. But is this possible or should the form first be loaded completely before you can call methods in that same form?
View 6 RepliesMy form load event is not running. How do I track down the coulpret?davidbell
View 1 Replies