I'm calling some data from my Oracle table and I have a field which is called 'image1' which is a BLOB field.
Sometimes an image is input into the field and others it's not. I need a way to read the BLOB field to see if its a blank and then show/hide my label based on its contents.[code]...
I would like to know how I can show and hide data based off of a value in a column.
Example. My table has 3 columns Name, Password, and Tel#
:Pseudo Code
if Name or Column(0).Row(0) = "Shawn" then
. Column(1).Row(0).Forecolor = System.Highlight
. Column(2).Row(0).Forecolor = System.Highlight
[Code].....
I placed my code in the rowprepaint event of the datagridview and on start up I get the results I am looking for. However, if the user selects the row or a cell in the row then the value will display.
I don't want the value to show even if the row is selected.
I've a VB.net 2005 desktop application, and i'm using crystal reports. In one report i've abt 6-7 sub reports. is it possible to show/hide a sub report based on some condition. i'm new to crystal reports , please suggest what is the best possible way to achieve this.
View 1 Repliesdoes anyone know how to connect points of a label? Let's say I have a label and start the label at point 0,0. Aterwards, the points jumps to 3,6 ... then to 6, 9 dynamically based on incrementing 3. How do I show for example, the path it takes to let users know where they are? for example, 0,0 --> 0,3 --> 3,6 --> 6,9 --> etc. I've tried with drawline but unfortunately, this leaves my lable in a mess.
View 1 RepliesHow can I declare a blob field in an access database with SQL?
View 1 RepliesI had been using this way for while, and it seems it work fine with char and numbers.
Dim MyVar1 as String = "Hello"
Dim MyVar2 as Integer = 1
Dim MySQL = "Select * from table where field1 = '<field1>' and Field2 = <field2>"
MySQL = MySQL.Replace("<field1>",MyVar1).Replace("<field2>",MyVar2)
msgbox(MySQL)
But, when I have to deal with blob field, where I store "wav file" for example, I had to read it as array of bytes, and the only way I find to insert the array of bytes in my query string is by using the command.AddParameter
Dim myfile As System.IO.FileStream = System.IO.File.OpenRead("full_wav_file_path")
Dim myArray(myfile.Length) As Byte
myfile.Read(myArray, 0, (myfile.Length))
[Code] .....
Is there another way to insert it without addParameter?
Trying to insert a large audio file into an Oracle 10g database and keep getting this error:
ORA-01460: unimplemented or unreasonable conversion requested
The byte array length of the audio file is 2702577. The procedure works with smaller array lengths, but not the larger ones.
Here is my code:
Dim oracleConnection As New OracleClient.OracleConnection
Dim Cmd As New OracleClient.OracleCommand
Dim oracleDataAdapter As New OracleDataAdapter
oracleConnection.ConnectionString = System.Configuration.ConfigurationManager.AppSettings("MasterConnectionODT")
[Code] .....
I have a label and button on label in my asp.net webform.i want when i click on button then label1 will be visible with text "Success" and then it will hide automatically after some time say 10 seconds.I M using asp.net (VB)How to auto hide label after 10 sec and after label hide redirect to the ~/Default.aspx ?
View 1 RepliesI'm trying to zip a file that is stored on SQL Server as a blob image field and when downloading the zip file it says the file is corrupted.. or the file will open but contains some crazy characters. I've tried WinRAR and 7zip and no luck. I checked out [URL] and tried to kind of combine the browser attachment code and the memorystream/byte array code and no luck.
Here is my code snippet:
Try
BinData = DirectCast(dt.Rows(0)("ImageField"), Byte())
Catch ex As Exception
End Try
Dim blen As Integer = BinData.Length
[Code] .....
I'm trying to read a binary file from a FileMaker 11 container field using Filemaker's own ODBC driver. I was able to write files to the database and this works fine. retrieving them manually works fine and the files look OK and are not corupted. However when retreiving them using VB.NET, and if the file size is approx > 5MB, I get the following "uncatchable" error (yes thats right, I cant "Try Catch End Try", it just crashes):
System.AccessViolationException was unhandled
Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
[code].....
I'm curious if it is possible to hide a group of text boxes from view in a form until a particular condition is met, and to have a custom set of text boxes for that condition. To give an example; I want radio buttons offering choices for a manner of searching records, the user selects one and then a specific set of text boxes are displayed for the user to utilize, if a different option is chosen a different set of text boxes will be shown. Is this something that can be done?
View 7 Repliesis it possible to show a figure in one Label in another label through a button click event? for instance, i have a figure in label1 and i want to display that figure in a label of another form is it possible?
View 1 RepliesIs there a way to have a button hide when a form loads if the user is running windows xp or earlier?
View 9 RepliesUsing <System.ComponentModel.TypeConverter(GetType(System.ComponentModel.ExpandableObjectConverter))> _
on the declaration of a class (which is a property of another class) that consists of a number properties.
I load an instance of this class with simply ...
PropertyGrid1.SelectedObject = oColumn
Obviously I don't want to manually build the propertygrid in code, I know how to do that.
But here's the problem. Depending on the value of a property, certain other properties should not be visible, as though I'd used the <System.ComponentModel.Browsable(False)> _
attribute on the property declaration.Is there anyway to do this programmatically, without having to handle all the building of the property grid manually>
I have to hide the VIEWSTATE and EVENTVALIDATION hidden fields on my ASP.net page at RUN time.
I managed to remove the EVENTVALIDATION like so.............
<%@ Page enableEventValidation="false" EnableViewState="false" %>
But the VIEWSTATE is still there and I cant get rid of it and I need to. (hard to explain why)
I have an application in which a user fills out a form indicating their interest in a service. This includes contact info. (e.g. name, email). They are then redirected to a page with a CreateUserWizard control - the idea being that it will prepopulate the form with most of the info. needed to create a user account (excluding username/password which need to be entered manually).
[Code]....
What is wrong with this, it throws a debug error.[code]...
View 3 RepliesIn the about use should be a label and a button. The label should tell about the program and have the name of the programmer and the button should hide the about us form.Here's my code:
Public Class Form1
Private Sub ExitToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ExitToolStripMenuItem.Click[code].....
I have a Query to Display values in grid view, now i wanted impose certain condition in query to filter the values.I have FABDue(date column) and FABComp(date column)columns in a table.I need to check following two conditions in query
1.Records which does not contain FABdue date in FABDue column, then those records should not be listed in Grid view.
2.Rcords which are having FabComp(column) date then those records should not be listed in grid view
[Code]...
I am brand new to Vb.Net and was wondering how I could loop through each label and say if the label.text = 0 then Hide panel1. How would I get that accomplished?
[Code]...
I am successfully hiding a combobox, based on the selection of another combobox. However, I can not get the label of the combobox to hide as well. The code I am using, which is basically the same code for hiding the combobox itself returns the following error:
Error 1 'DOCUMENT_EVALLabel' is not a member of 'WindowsApplication1.Form1'
Here is the code I am using for the label:
Me.DOCUMENT_EVALLabel.Visible = (EVALUATIONComboBox.Text = "Text")
In mscharts i m able to give label to the marker points using the function atabindcrosstable using the code
Chart1.DataBindCrossTable(dr, "something", "anything", "a_data", "label=c_score")
now i want to hide the c_score label for the marker points.
I m showing the label in the tooltip on mouse hover using the [code]....
i have a form with a tab control and two tabs and a label below the tabcontrol.. in tab one i'm editing files and such and the label below the tabcontrol shows the directory of the file i am working on.. what i would like, is to have that label not be visible when i click on tabpage 2..
so basically, i need the code for the tabpage select. like when when you click a different tab, a different command applies..
I want to display the text of a label as a underscore character until specified otherwise. Kind of like how you can show text in a textbox as any character using passwordchar
View 3 RepliesI'm writing a standalone application in VB.NET using Visual Studio 2005. I want to display/hide a bunch of Buttons based on the selected value of a ComboBox. Each selection would have a different set of Buttons to display, and I'd like to have them arranged in a nice grid.
Driving a TabControl with the ComboBox value would be the kind of behavior I want, but I don't want it to look like a TabControl to the user because it might be confusing.Is there a way to do this?
Basically, I'd like Selection1 of the ComboBox to show Buttons 1-4, Selection2 to show Buttons 5-11, Selection3 to show (maybe) Buttons 1, 3, 5, 6, and 8, etc., have them arranged nicely, and have the GUI show only the ComboBox and the buttons.
I have a problem to show and hide some div. The only thing i have is a span with a class. Where we need to click on, to show or hide the div below the parent h2 I can't add some classe's to the h2 or div (this come from some cms, where we can't add a css class), so we need to do it with some jquery.
<div>
<h2>
<span class="h2toggle">Heading (This shows an hide the div below)</span>
</h2>
[Code]......
Just playing around with VB and have made a program for playing "pairs". The program displays lots of face down cards, then the user can click on them to reveal their face and try to find pairs. This is done by hiding or showing the "card reverse" picture
If the user finds a pair, the cards should stay face up, however if they do not match, they should be returned to facing down.
The pictures need to be loaded dynamically through an array...
The code I have so far is as follows...
Form1...
Code:
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code].....
Just playing around with VB and have made a program for playing "pairs". The program displays lots of face down cards, then the user can click on them to reveal their face and try to find pairs.If the user finds a pair, the cards should stay face up, however if they do not match, they should be returned to facing down. This needs to be done by hiding or showing the "reverse of card" picture..[code]
View 3 RepliesHow do I exclude one value from a grouping sum, based on a value of another field?ie I open Report=> Report Properties=>Code and insert my Custom Code, but how would I change the below code to exclude a numeric value of another field for the below case?
Public Function ChangeWord(ByVal s As String) As String
Dim strBuilder As New System.Text.StringBuilder(s)
If s.Contains("Others") Then
[code]....
I'm using Visual Basic 2008 for example i have running notepad.exe, can i hide notepad window, and then if i need it to show it again?
View 1 Replies