I've been trying to take a text string converted to HASH512 and have a textbox to verify that the entered string to HASH512; if HASH512A <> HASH512B then "incorrect password".
The problem is I don't know how to specify a certain saltByte prior to running the function.
vb.net Public Shared Function ComputeHash(ByVal plainText As String, _
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I inherited a site which I am in the middle of updating which has a DropDownList and a RangeValidator assigned to it. The data is bound to the dropdown on Page_Load. The values are retrieved from the database so the value property of each item is set to the unique ID of the item in the DB.
The RangeValidator looks something like:
<asp:rangevalidator id="ddRangeValidator" runat="server" ControlToValidate="ddMenu" ErrorMessage="Please select value in range" MinimumValue="1" MaximumValue="100000" Type="Integer">*</asp:rangevalidator>
I have a method which automatically populates this value in jQuery e.g.
$("#ddMenu").val("An Option"); This works, however, when I try to post the page the range validation fails. Then even if I manually select that value, or select another valid value it still won't validate. The only way to make it validate is to select non-valid value and then re-selecting a valid one.
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When building a class library which contains many classes, all classes uses a lot of common constants and functions, what is the best to do:
1- Declare these constants and functions as public in a module.
2- In each class declare constants and functions used by individual class as private.
The first choice is good for easy and fast implementation, but re-using a class in a different project will require importing the module to the other project.The second choice require a lot of copy/paste for code snippet but a class can be re-used in different project easily.
I want to know that how we access a constant which is declared in a public structure, with an instance of that structure?
View 7 RepliesI would like to know how to apply code for a date that will expire 5 days after whatever the current date would be and it needs to be a "constant".For example: When the user loads a form, the current date is assigned, and the expiration date always needs to be 5 days after the current date.
View 4 RepliesI have the html of a page loaded into a string.
confirmUse('??????','Eat'
I want to extract the number that the ?'s represent however confirmUse is used in other parts of the page. The only constant is the 'Eat' which is unique to this specific number.
I usually use Mid and Instr to find what I need but when I try to back track it gives me an error because the index number is below 0.
I want to create an array of constant variables for my program. But from everything I read about arrays they are handled by a number. I want to be able to pass back a variable that will hold the name of the constant as well as the value. How would you go about do that.I want to when I type the variable to have the constant name show up as I am typing.
View 4 Repliesi can write the xml i need which looks like:[code]This shows me the value fine! when i change the attribute name to another field like: MessageBox. Show((XMLItem.Attributes("postingHiddenFieldsCount").InnerText))i get a null reference error,
View 9 RepliesIt appears that my favorite thing in the world is tackling projects that are beyond my current knowledge and abilities. I have a little project that I am working on which is a simple image viewer stocked with (upon completion) your standard Load..., Next/Previous, Zoom In/Out, Actual Size, and Full Screen capabilities. However, I am running into a few snags:
(1) I've been able to get my "Load..." button to display a file dialog box, but I cannot seem to get a working filter (with which only image file types are allowed to be selected) in working order.
(2) I have a PictureBox object (entitled PictureBox1) that displays the image selected via the file dialog box, but it loads images in their full size (1:1/100% zoomed) state without scrollbars, etc. to allow me to navigate the loaded image. I would like to have it load the image, initially, to fit within the dimensions of PictureBox1 and from there be able to zoom in/out via my "Zoom In/Out" and "Actual Size" buttons and be able to scroll if the zoom level is beyond the dimensions of PictureBox1.
(3) It dawned on me that I haven't the faintest idea how to get my "Next/Previous" buttons to allow the user (me) to navigate, in succession, the images contained in the folder in which the currently loaded image is stored. [code]
If it is deemed that this thread is inappropriately requesting help, I ask that it be locked/deleted quickly as I recognize that this is a large community with many discussions going without need of unwelcome posts.
I'm getting this error when try do a simple task of selecting a tab in a thread. What does it mean and how do you solve it? [Code]
View 1 RepliesThis is another question on my who wants to be a millionaire game.I have 15 questions per game, when i select question 1 , it displays the question in the textbox, how do i tell vb that if "A" (label1) is selected then msgbox "Final answer ?"
i know i can do it on label1 click event , but i want the results for this question only.
Heres what i tried: Private Sub question1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles question1.Click
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i have a button and what i select i want to be underlined. is it possible to do it?
View 11 RepliesI need to select all the comboboxes on a form with a for each loop. I have about 19 comboboxes and I need to select each one. I tried to do
for each box as combobox in me.controls
But that gave me an error and i now tried this:
for each box as control in me.controls
if box.name.contains("ComboBox") then
...
end if
next
That selected only the comboboxes but the problem is i need to access some data that is specific to comboboxes (aka the selected item(s), if its blank) but those properties are not present since "box" is a control, not a combo box.
i have 2 labels that are 1 for minimum damage and the 2nd for maximum damage,how do i make it so if when a person clicks a button it deals damage between the 2 [code]so if i press the button it were to deal (subtract) damage in between the 2 numbers. from a label box (opponent health)
View 16 RepliesI am pretty familiar with how to use the webbrowser control. I know how to autofill forms using the getelementbyid code but I'm having a problem selecting from drop down menus.
Here is the html source
<select name="birthday_mon">
<option value="0">---</option>
<option value="1">January</option>
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I am placing 2 of these on my form and want to do the following:
1. When the control is not Focused and the user clicks inside the control, I want to highlight all text within the control. I expect to use SelectAll() to accomplish this.
2. When the control IS Focused and the user clicks inside the control, I want standard actions to occur; i.e., the user can click-and-drag to highlight, double-click to highlight,
3. When the user leaves the control (clicks on something elsle), if the control is empty, I want to populate it with pre-defined text. If it's not empty, leave text as-is.
I'm having problems, though, with figuring out #1 and #3. I have tried Enter/Leave, GotFocus/LostFocus to no avail. With Enter/Leave, the text will highlight the first time a user enters the control, but I can't seem to get the program to think the user has "left" the control. That is, the "Enter" code will not fire again.
I also thought about using the Click event, but I don't want the SelectAll() code to fire for EVERY click in the TextBox controls.
i know how to use parameters on INSERT, UPDATE and DELETE into sql server.like:
VBNet
updateCMD = "UPDATE table SET somevalue= @valueparam1 WHERE ID = 2"
Adapter.SelectCommand = New SqlCommand(updateCMD)
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I'm doing an application where I open a specific process. And after opening that process I need to send data to him like username and password.
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how to move a textbox or any control by selecting its borders like in ms publisher 2007 and creating an application like publisher
View 3 RepliesI have a typical data entry form to show one Customer. All textboxes, controls, etc. are bound to a BindingSource.
Clicking a button, I pop up another form with a DataGrid to show all Customers in a table, this way:
VB
Sub btn_Click
Dim frmPopUp As New frmSearch
frmPopUp.BindingSource1.DataSource = Me.BindingSource1
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How can I populate the fields in Form1 selecting a row of the grid in frmSearch?
What I need, is to synchronize the databindings (I think).
I'm selecting a customer from a listbox of surnames...I need to address to display, and the date arrived back...Can't get anything to go into the textboxes, if dr.hasrows is showing up as none I think... not sure how to go about remedey"ing" it though...
Listbox
Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
Dim ConnectionString As String
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Heres the code im using to select images from a directory , i also have a timer delay between each image , but my problem is when i start my app , it start by selectind image 1 (Images are numbered 1-15) but i want to select the images randomly ?
Private Declare Auto Function SystemParametersInfo Lib "user32.dll" (ByVal uAction As Integer, ByVal uParam As Integer, ByVal lpvParam As String, ByVal fuWinIni As Integer) As Integer
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I posted a while ago about having issues with a database, and selecting a value from the database. I was told that there were things missing from my code, and I've not gone back and added the things I was advised to. Now, my code seems to be working more, but outputting the wrong value.
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How would I go about dynamically declaring a constant? (It's value is dynamic, not the variable name)
View 5 RepliesI want to put a persons National Insurance Number into a label but I want to put *** in place of the first 5 characters and then display the last 3 characters as normally.
View 1 RepliesI'm trying to select a 'Username' value from a table called 'tblUsers' where the 'UserID' is 1 and assign it to the 'Text' property of a field. The SQL command is fine, but I don't know how to assign the value to the file. I've changed the SQL command to select the value I want. I just don't know how to assign it to a field:
'Use these import statements, so you don't have to fully qualify the Oledb Object names:
Imports System.Data.OleDb
Imports System.Data
Public Class Register
Function Register()
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I have a TreeView that I am using for display purposes only. I don't want the user to be able to select any of the nodes. Setting the enabled property of the form to False doesn't suffice since it changes the entire look of the nodes.
I tried canceling the select action in the BeforeExpand event. It kind of works. It selects, then de-selects the item. I'm going to play around with other events to see
I am creating a "Who wants to be a millionaire" game. Lets say I have 100 questions in a listbox. How can i randomally select a question by clicking a button.
View 11 RepliesI have a table being imported into my VB application that has 3 columns. I have written code to import the table, and have written code to display on the first column (country) in a list view.What I want to do now is have the user select / highlight an item in the list view, and have the third column (currency) related to that selected country appear in a text box when a button is clicked.Here's the code I've written that successfully imports the data and displays the first column:
code
Private Sub frmCountry_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
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I am at a bit of a loss at the moment. What I am basically writing is the password elements of a membership system. What I do is generate a random salt value, take the registered password, combine the two and then pass the new string through a function which will generate a SHAManaged 512 hash.
I then convert the hash and salt string into Byte arrays and store these in my database.The problem comes when I then compare a login attempt against the original value I am being supplied with a completely different hash for the password being presented by the user, even though it should be exactly the same.
Here is my code when someone registers their new account:
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