How To Retrieve Or Set Data Programatically For Dynamically Added Textbox On A Form
Dec 27, 2009
I have successfully added textboxes to a form at runtime. I have also succesfully added an event handler to these same textboxes. What I'm having trouble understanding is how to refer to these textboxes programmatically after they have been added. Specifically, how do I;
1) Retrieve user data entered in those textboxes without an event handler
2) Find a specific one of those textboxex later (is looping thru all controls of type "textbox" the only way)?
purpose of find is so that I can set the value of the corresponding textbox programatically, based on some criteria Here is the code (all within in a for loop, where intvararycount is incrementing to a set limit) I have used to add the Textboxes to a Panel on a Form;
Is it possible to have a Textbox on a form that when the user inputs data, ( during Runtime )that data remains in the Textbox for good and the Textbox then becomes read only ? Is it also possible to make it so that the CD with the programme on, is in the PC when the programme is being used. Perhaps writing the Textbox data back onto the CD ?
i have multiple forms in a project and all have statusbar. there is no way to add textbox on status bar but in my previous thread i got the help to add the text box. i created a function in module so that i call that function from all the forms on load and add the textbox on status bar and also add the event on textchange. the function to be called on event change is in individual form (at present)[code]
I am(beginner) trying to make a simple application using visual basic 2008 and sql swerver 2005.The connection is successful and i can add/update/delete data sucessfully from sql server database but now i want to show the data from sql server to textbox on the visual basic form. i have tried the following code but this doesn't work and even there is no any error.[code]...
I have employee_id 1000,1001,1002,1003,1004... likewise. And my other fields are employee_name,employee_age,employee_mobile likewise.,.
what i need now is i get a employee_id in combo box. if i select the employee_id in combo box in the below text boxes i want to display the other fields like employee_name,employee_age,employee_mobile..
I could connect to the database alright. My problem is how to retrieve data into text boxes. In Vb 6.0 i could use the ADODC control to retrieve onto the textboxes as follows[code]...
I am trying to retrieve data to a textbox from a datagridview. I have Tabcontrol with two tabs naming Data Sheet View and Form View. The datagridview is in Data Sheet view while my textboxes are in Form View.
Al I want is that everytime I click on the data in datagridview, it would display in textbox in form view.
Here are some of my code:
Dim ret As String = "select * from newstudent_tbl where USN='" & DataGridView1.SelectedCells(0).ToString & "'" cmd.CommandText = ret
I am coding a public sub routine that clears all textbox fields in a form. I want to call/reuse this sub routine everytime i want to clear all textfields in any form in my program.
I can create a collections of all textbox objects in a form and loop on each of them to clear their textfields.
I have 10 IP address I need saved so that when the programed is closed the user doesn't have to re type them all back in. To get around this I created a database that would store the values. My table contains one Field "host" and then has all 10 IP addresses listed below that.I'm trying to figure out how to make a text box on my form look at a certain row in a SQLServer 2005 table.
For example:
txtIP1.text = Row 1 of SQL table txtIP2.text = Row 2 of SQL table
Here is what I have in my Form load Event. This works, but again I need the second rows value to show in the second txtbox.
when i add the record it saves and returns the save message box as it should and is viewable in the database where it saves to, but it is not viewable in the text boxes when looking back at the form until i close program and re open it, then i can see the record stored in the database, it just wont update the form,[code]
I understand the page lifecycle and how i need to add the dynamic controls on page_init if I want to take advantage of viewstate. Also I know that I should try to avoid dynamic controls when possible. The dynamic controls are created depending on an object that is created from custom event arguments sent from a custom treeview. Problem is I need viewstate so I need to create them in page_init but I don't have the event args to create the object that tell me what controls to add until later in the lifecycle.
Private Function GetEventArgs() As npTreeViewEventArgs Dim control As Control = Nothing Dim e As npTreeViewEventArgs = Nothing
[code]....
I use this in page_init to create my object and controls.
i want 2 select data from data gridview and want retrive that data into another form in to the textbox ...is it possible ? i 'm doing like this for that
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.[code...]
I am working a small project where I would like the user to be able to add images to a form, specifying a URL in the tag of pictureBox, so that when it is clicked.
Okay, so I have some problems with dynamically added pictureboxes. This is the code I have now. When I click on one of the imageboxes, I get teh following error: Index was outside the bounds of the array.
On my webpage I am loading multiple instances of a usercontrol, sometimes the usercontrol is laoded within itself. I need to save a bunch of properties for the round trip of a post back but i am confused on how to save those properties to ViewState and set them again to the repeater items within the usercontrol. have read the MSDN on Viewstate but I am not understanding it quite well for some reason..[code]
using vb2005 to write a windows mobile 6 app, need to retrieve data from the sql compact editions database and print info in labels and textbox. i also would like to know how to add the info obtained from a date time picker, radio buttons, and a textbox to load it back into the sql server compact database so that it is updated with new records.
I am trying to retrieve information from one row that has four columns(name,company,address,phone) so that once it is displayed in 4 different textboxes, I can transfer to a word document.
I have a number of user control dynamically added to a page, and user interaction with these dynamically added user controls need to be handled by the control's parent. Is this what is referred to as "event bubbling"?How do I do that in VB?
This is my first post to these forums so forgive me for any etiquette I may be disregarding.I am creating a custom control that has a TabControl on it. The user will then double click or right click the TabControl to display a ContextMenuStrip asking if they would like to add a new image (or tab) to the project. After they select the image file, I create a new tab, add that to the TabControl, and then I want to create a PictureBox that I draw on in a particular way depending on space available and several other factors.
Where I am having the issue is in drawing the image to the PictureBox, it is only displaying the BackColor and none of the DrawImage work. It is important to note that because of what I am doing it will not suffice to set the PicBox.Image = ImageFile or PicBox.BackgroundImage = ImageFile. I need to select tiles from the image file and then draw them into the PictureBox in a particular way, which changes if the control resizes. Also, I am using a PictureBox because the final image within it can potentially be larger than the containing tab page, and therefore I want the TabPage to generate an AutoScroll bar. If there is another way to do this, please let me know.
Below is a very simple example of what I have currently. What I suspect to be happening is that the PictureBox's Paint event is firing after I do my DrawImage work and basically overriding what I did, but I hope I am wrong.OpenAddTilesetForm() simply displays a form for the user to select which image to use, and the properties pertaining to it.
I'm adding multiple combobox controls to a form dynamically, but am having a problem with one of the event handlers. The first event handler I've added (for the Leave event) fires, but the second (for the TextChanged event) does not. I've tried reversing the order when adding the handlers and I get the same results (TextChanged does not fire). Here's a code snippet for adding the controls, and the code for the events. I've added a breakpoint while testing to verify - but it never hits the code.
Dim cbo As New ComboBox cbo.Name = "cbo" & fldName cbo.Tag = fldName.ToUpper cbo.Top = rowtop cbo.TabIndex = tabOrder cbo.DropDownStyle = ComboBoxStyle.DropDown [Code] .....
