Validate Controls In An Asp.net (VB) Panel Which Contain A Specific Css Class?
Dec 22, 2011
I have a lot of controls on my asp.net web form that require validation. Rather than list each control in the code behind page that requires validating I would like to add the css class "required" to the necessary controls and then on submit the code behind will validate each control with this class. I'm fairly new to .net so here is some Pseudo code:
Public Sub ValidateAllControls(ByVal a As Object)
For Each c As Control In a.Controls
If c.Controls.Count > 0 And c.Controls.class = "required" Then
When a user is editing a given piece of data, they're allowed to add messages/comments. These are stored as child records in a SQL database. Clicking on the Add Message button brings up a panel (pnlMessage) courtesy of the AJAX ModalPopup Extender. This takes some input and, when the "Send Message" button in the panel is clicked (I learned the hard way to NOT make that the 'OkButton' property), the message is stored in the database and an email is sent to the intended recipients. No problem there.
However, I need to be able to allow the user to add new email addresses (so long as they are registered in our database). I have another ModalPopup / panel combo (pnlSearch) that's tied to a button on the previous panel (pnlMessage).
The user is supposed to be able to add an email or click on a search button to populate a list to choose from.
The pop-up panel (pnlSearch) comes up just fine, but clicking the "Lookup" button (which instigates the search and returns a collection of records that the user is supposed to pick from) closes the panel.
Previously, I ran into the problem of having the Button.Click event never firing when I put the Button into the "OkControlID" property (the CancelControlID works fine since I don't want to do anything). Removing the "OkControlID=Button" line allowed it to work perfectly with the Button.Click event firing as expected.
So now I have the Search panel with a button for "OK" and a button for "Search" - but the panel should stay up and visible after the Search.Click does it's thing. Am I missing some property that basically says "don't close the panel when this button is clicked"? Of course, if I bring up the panel again in the same session, the results from the previous effort are there (the search results).
I want to validate text taken from a textbox and want it in a specific format. I have tried masked text box but when the textbox is empty it shows something like a blank line in the text box....How can i avoid that and show the masked textbox just like a simple empty (still masked) textbox?Secondly I want data like csc-(somenumber).....Can I add some random number automatically after 'csc-' characters?
I have a Combobox in DropDown mode. I have the code for handling the selected list item in the Validating event of the Combobox If the user highlights the text in the Combobox and presses the Delete key, the text is deleted The user then clicks the MenuStrip and the dropdown menu appears.
In VB6 I could embed a panel or picturebox containing controls or images within an outer panel or picturebox. If I moved the outer control then the embedded panel would move with the outer panel and stay in the same relative position, which is what I require. This doesn't seem to happen in VB.NET, the internal panel stays fixed in its location, even if I have pasted this panel within the outer container. Is there are trick to this or do I have to code to get the internal panel to move with the outer one? How does an internal container remain embedded within an outer one?
i am using vb.net 2005, in windows application, i have controls like textbox, listbox, radiobutton in one form, all the controls are required to fill, how can i validate all controls in one buttonclick..
is there a way to validate controls on a form, where the validation rules themselves are stored in a database table?My problem is my application is used to submit forms to mulitple government agenices both local and state level. Every entity seems to have there own rules about what needs to be in what location. i would like to not have to code all of the various rules for all the different fields. My thought was to store them in a database table and then perform validation based on rule table lookups...however I would like to use the .NET validation controls.
I'm trying to add validation to one of my class properties:[code]The value for the golfer's handicap comes from a oombo box on the form. Even if I have nothing set for this property at runtime, my validation doesn't work. I tried putting the If statement under Get instead of Set, and tried mHandicap = value after an Else in the If statement, but nothing seems to work. I'm working in the dark here and can't find anything suitable online. I was hoping to not go down the path of ReadOnly or WriteOnly properties as I'm not at that stage yet, but does this make a difference for my purposes here? Can anyone guide me as to what I'd need to do from this point? If I've got it right, you can add validation in the class and this means that you then don't need to repeat this validation in the form??
Im builtina an windows application based on 3 tiers model. I have BLL, DAL, and UI Class. IN DAL I have SQL code, In BLL I have proprietie and methods .Im trying to validate the input fields on BLL class and no problem,and im just do it after SET instruction. I also PUT a message to view error. But From BLL class I want to put the focus in textfield that return error. I cant acess form proprieties (the forms are on UI class).
I am trying to create a new class to validate user input and then call that class from my main form. I am not looking for anything to do the work for me, as this is the last part of my project but I am looking for a place to start. I tried the isNumeric IF statement but I have to create an object to reference the specific text box. Can I be generic and say that aTextBox requires validation and then call that class?
i have a panel in which i have some controls like label dgv and textbox and picturebox in my application in certain situation the panel re-sizes and and all the control lose there default location which is then be used is their any when panel get bigger or smaller the controls stays where they are...
I am trying to add controls to a Panel in a loop, but for some reason they are being added from the bottom up instead of top down.In a little test program I am running this
Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click For i As Integer = 1 To 10[code]....
And this is the result I get ... the controls are added starting at the bottom. I need them to start at the top of the panel, with each new control being added under the previous one. If I remove the Dock statement, then the controls just get added on top of each other.
I've successfully been able to add controls (labels, images, buttons, etc) to a panel control (using VB/ASP). This panel control, I refer to it as "insertpanel". Then I add this panel to the main panel on my webpage which I made during design time. The problem I run into is that when I add multiple controls of any type to the panel, they are all added in line with each other. I tried giving my image some css-styling of[code]....
Want to use several panels on a single form and have them turned on based on what button you click. Think I can figure out how to turn panels on and off but I find it difficult to manage multible panels within a single form in Visual Studio.When I create multible panels they end of connect to eachother instead of connecting back to the main form and when you add child controls it is difficult to know what pannel they got connected to.
After dropping controls on a panel, each control is assigned an index which is panel1.controls.item(x).After the controls are dropped on the panel, is it possible to re-index the controls via code?
So I have 2 picture boxes, a textbox, and a button. One of the picture boxes adds another row with the same controls but moved down when clicked and the other picture box (should) remove the same row that it was clicked on. I have PictureBoxAdd1, PictureBoxRemove1, TextBox1, and Button1 set up by default and when PictureBoxAdd1 is clicked, it adds 1 at the end of the name properties. Now, how do I remove the appropriate row when PictureBoxRemove is clicked? Say I have 5 rows (but the amount of rows available will depend on how many PictureBoxAdd was clicked), if I click on PictureBoxRemove4, then PictureBoxAdd4, PictureBoxRemove4, TextBox4, and Button4 should be removed all together.
im building an application using vb 2010 in which around 2000 labels are loaded on runtime. these labels are loaded and unloaded periodically.the unloading process of 2000 labels is very slow.guide to remove/unload 2000 lables faster.here is my code to unload labels.
For i As Integer = thisControl.Controls.Count - 1 To 0 Step -1 Dim LabelWhichShouldBeRemoved As Label = TryCast(thisControl.Controls(i), Label) If LabelWhichShouldBeRemoved IsNot Nothing Then[code].....
how to add controls in panel control runtime. I mean, I want to add group box at runtime. When I click on my button, it should add a group box in my panel and when I click again, it should move the first group box down and add the second. Every group box should have a label control in it.
I am working on a project for a handheld in Visual Studio 2008 where I need to add a group of labels to a panel that correspond to a record on the database. The record is a "Pass/Fail" Record. So, if the record is a "Fail", the failed items will be added below the main group of labels; therefore, many child groups of labels will be added below the main group, which is theoretically the header record. I am using a second panel to add the failed items. My issue is how to dynamically add, name, and position the failed item labels and panels. Below, I have included a sample of what I am trying to accomplish.
I'm trying to add a group of four radio buttons to a form. There are other radio buttons so I'm grouping them by placing them on a Panel. However using the below I just get the panel added to the form without the radio buttons... Am I doing something wrong here?
Dim arrRButton(3) As RadioButton arrRButton(0) = New RadioButton arrRButton(1) = New RadioButton
Code: Private Sub btnMonSet_Click(sender As System.Object, e As System.EventArgs) Handles btnMonSet.Click My.Settings.tweetMon = tbMon.Text If tbddOccurrence.Text = "Just Once" Then If cbToday1.Checked = True Then lblPanel.LblScheduledTweet1.whenDate = Date.Today [Code] .....
The goal of this code is to add a control to a panel in runtime. This MUST be done in runtime for the purpose I intend. The problem is that, when I add a second control, the first one disappears.
Is there an efficient method of changing the opacity of a panel and it's controls? OR Is there an efficient method of changing the opacity of a MDI child?
First problem: Clicking the addsplit image adds another row with the same data but an increased value to the end but when the 6th row is added (displays the scrollbar), only the bottom 5 addsplit image works (when scrolled to the bottom) instead of all of them working. How can I ensure that when the image is clicked, the scrollbar automatically scrolls to the bottom and also how to make all addsplit image work instead of the bottom 5 only?[code]....
