How To Handle Variable Number Of Textboxes In Asp.net
Jul 19, 2010
I'm developing an app that should allow the client to add several content sections to a page (in tabs). However I haven't found a way to easily create a form for editing the tabs.Assume for now that a tab just contains a title. I have a form that adds a tab, that's simple. But I also want a form that displays a text input for each tab and allows the titles to be edited and saved. I'm struggling with two main concepts:How to dynamically display the fields after grabbing the tab data from the database (each tab has its own row in the table).How to loop through the submitted data and update each tab in the database.How to select a particular text field from the number (e.g. given "1", how to select the element with ID "TabTitle_ 1".[code]I thought something like TabTitle[0] would be acceptable and allow for easy looping (as it does in PHP) but it's "not a valid identifier" apparently.It's very possible I have the approach completely on its head.
I have a windows form on which there is a textbox and a command button. When user inputs an integer in the textbox and clicks on the button, the userform grows and adds that many number of comboboxes and textboxes in a panel.
how to add variable number of comboboxes and textboxes at run time.
I am trying to draw textboxes when the user enters the amount of textboxes to be drawn on one form and the textboxes get displayed on the another form. I have found these codes online but it works with inbuilt codes I guess. That is, the number is already hard coded in the form.
I have multiple textboxes which I want them to perform the same thing upon clicking them. By default I can use the handles textbox1.click for 1 single textbox but I am not sure how to do handle multiples of them. Of course I can write a handler for every single textbox but I have about 50.
Sub TextBox1_click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.Click If Button9.Text = "Make Changes" Then If TextBox2.Text <> "" Then Frm_Cine1.Show() [Code] .....
Is there another way to handle the leave event of multiple textboxes other then coding in each event handler? I may not be using correct terms instead of doing this: (Existing) Private Sub leveladjstvaltxt_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles leveladjstvaltxt.Leave If Me.leveladjstvaltxt.Text <> "" Then Dim levels As Integer = CInt(Me.leveladjstvaltxt.Text) Me.leveladjstvaltxt.Text = Format(levels, "#,###")
I have 30 TextBoxes all need same formatting , so I was trying to come up with something like this: (trying) For Each ctrl As Control In Me.Controls If TypeOf ctrl Is TextBox And ctrl.Text <> "" Then Dim val As Double = CDbl(ctrl.Text) CType(ctrl, TextBox).Text = Format(val, "#,###") End If
I am stuck though and don't know where I would place that code if this is something that is even possible. Only thing I can currently think of is in the leave event which defeats the purpose, I wanted to avoid having to place the code in 30 different textoxes leave event.
add a code to handle the TextChanged event of my Textboxes to clear the Result box.
Private Sub btnCalculate_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculate.Click txtResult.Text = txtRate.Text / 100 * txtAmount.Text * txtYears.Text End Sub
I have defined 5 variables T1, T2, T3, T4, T5 As Double and set them all = 0. On a form I have a enter information button. Each time the button is pressed I want to assign a different variable, to a text box input. For instance, If I enter 1 that will become T1, and then if I enter 2 and press the button again, that value becomes T2.
I have tried If T1 = 0 then T1 = textbox.text End if If T1<>0 And T2 = 0 then T2 = textbox.text End if
I have tried to use 'else' statements and all kinds of things like that to no avail. I can get the first two variables correctly assigned but three is impossible with my current understanding. Is there a way to do this, or do I need 5 buttons, so that I can control which variable is assigned? To be correct my intent is to create an observation with three variables each time the button is pressed.
For example, the first button press will result in three variables being assigned a value other than 0; they are T1, B1, and R1. I have just begun to understand the concept of arrays and am wondering if that may be the way to go in this situation. I was just going at this in a newbie way I'm sure and trying to handle each variable type individually, and figure out all the T* variables and move onto the B* variables.
I'm trying to add subs that will handle MouseOver events on textboxes that don't get created until after the program starts.
Each textbox gets created with a unique number attached to it like this...
AptTextBox0 AptTextBox1 AptTextBox2 etc...
Depending on how many are needed. But I never expect more than say... 15 at any given time.
Is it possible to handle MouseOver (or any events for that matter) if they don't exist until later.
I tried this but it didn't work....
I added this is the Designer code....
Friend WithEvents AptTextBox0 As System.Windows.Forms.TextBox Friend WithEvents AptTextBox1 As System.Windows.Forms.TextBox Friend WithEvents AptTextBox2 As System.Windows.Forms.TextBox
[Code]....
But it doesn't do anything. I don't get errors, but apparently it's still missing something to properly handle the events.
I know this is probably a stupid question. I am converting a huge string to a integer, it is not working.....saying the number is too large to handle. It is only a 10k character string.I figured this would be fine because 2^16 power is 18446744073709551616.
I am created a Vb.net ERP Application! In this application I handle core accounting concepts. I have handled Salebill and many of accounting form. I take salebill billno from Database by selecting maximum srno from salebill Table but whenever multiple user trying to access this form at a time, everyone gets same billno. How I handle this situation to show different bill no to different users?
How can I read data from textbox1 to....n using cycles? Something like this: 1. For n=1 to 50 2. text=textbox_n.text 3. Output=output+text 4. Next 5. Msgbox(output) The question is in line 2. Syntax "textbox_n.text" is not right. How is it possible to read from textboxes using cycle and variable n?
I am a new VB programmer and am using TextBox in VB2008. Here are the problems I experienced in TextBox -
1, After I typed number in TextBox and found I need to type another number. So I used backspace key to remove it. But at this time program quit and displayed this problem: InvalidCastException was unhandled. How to solve this issue?
2, Can anybody tell me how to set number of characters are allowed to be typed in TextBox?
3, Can anybody tell me how to implement the feature that only numbers are allowed to be typed? In case letters are typed, how to tell user to re-type?
I have more then 50 textboxes and I want to force the user to write only numerical values because if he enters a number or just leaves it blank it gives an error and I don't want to write a massive IF statement with all the textboxes to prevent that from happening.
I know this is an easy one but I cant seem to find it with searching..I have a textbox with a phone number as follows: 1234567890 how can I split that phone number and put it into 3 new textboxes like this [code]I have seen it done in vb6 with left,mid, and right but it seems that it doesnt work the same with vb.net
I need a variable divider ex. i have numbers from my textboxes in the range of 20 to 60 i want a divider that will divide them in a range of 2 to 6 so if the number is the lowest 20 the divider will divide him with the lowest of his range number 2 if the number is 40 the divider will divide him with the number 4 if the number will be 45 the divider will divide 4,5 and so on a variable divider.
I was about to create a program about CPU Scheduling (SJF Nonpreemptive), Now, I want to ask the user to input the no. of processes ,then based from the user's input I would display exact no. of text boxes where the user could enter the value for each process then store it in an array. But I don't know how to code the text box., I'm new to VB.net and I'm used to it's 'drag and drop' nature. I just want to know how the code to output this text boxes. and is it possible to have an array of text boxes?
i have one label one button and 5 textboxes and i need to see in the label one number that randomly will choose from numbers that allready are in a group of 5 textboxes
I am creating a sailing score points program and want to create something like: what TEXTBOX has got biggest number that is between (TEXTBOX IS BETWEEN NOT THE NUMBER) [ and ] And it's subtracts that number what is in that box from the textbox3 when possible then how to do like:
under textbox are four checkboxes Named: DNS, DNF, DSQ and OCS and they give so much points how many are the sailers + 1. The setting name is Sailers
I'am creating a program that will input a number in a textbox for example 5 and display 5 textboxes in form...I have no idea how to do this but here is the code i've done..
I'm trying to do a project which involves reading the text from a number of textboxes and putting it into a string.I'm just wondering if there's an easier way to it other than:
