Web Forms :: Custom Self Populating Listbox
Jan 23, 2010custom self populating listbox
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Custom Server Controls :: Populating Values To Dropdown Listbox From Xml File?
Jan 11, 2011I have a textbox for City field and a drop down list box for office location which has to be filled up based on the City value.
How to populate the values of drop down list box from an xml file keeping the above consideration.
I am doing this in a asp.net user control and C# code behind
In future i need not change the code every time. Its only the xml file i change and the corresponding city related office locations get listed in the drop down list box.
I am referring to
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Forms Data Controls :: Populating Listbox From Textbox And Dropdownlist?
Feb 1, 20111. textbox (Search for staff)
2. Dropdownlist( Search for department)
3. Listbox( Populate staff name based on textbox or dropdownlist)
I am able to populate the staffs indenpendantly according to what is written in textbox or dropdownlist. Whar i wanted to do is mix the population of staffnames from textbox and dropdownlist. In other words, when i search "sandra' in textbox and select a Department A , the listbox will show all the sandra from Department A only.
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Populating A Listbox From SQL Server In Databound Formview
Oct 24, 2010I am "trying" to switch my form from SqlDataSources to ADO.NET data sources. So I have a DAL setup, and ObjectDataSources in my form referencing these DALs. These data sources are bound to the form's objects. So far so good. In the InsertItem Template of one of the form's FormViews I have a list box that I am trying to populate with a value pair (ID, TechName) from a database table and I get the following error:
"Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control." Apparently, one of the two workarounds involves programmatically loading the listbox. The code below shows one of my attempts, resulting in the above mentioned error:
Code:
Protected Sub TestFillDefaultValueInFormView()
Dim vInspectorList As DropDownList
If (FormViewHydInspection.CurrentMode = FormViewMode.Insert) And Not IsPostBack Then
vInspectorList = DirectCast(FormViewHydInspection.FindControl("DDlstInspBy"), DropDownList)
vInspectorList.Items.Clear()
Dim vInspectorDA As New DataSetHydrantsTableAdapters.TechnicianTableAdapter()
Dim vInspectors As DataSetHydrants.TechnicianDataTable = vInspectorDA.GetTechnician()
Dim vInspRow As DataSetHydrants.TechnicianRow
Dim vInspectorHT As New Hashtable
vInspectorHT.Add("0", "Select Technician")
For Each vInspRow In vInspectors
If vInspRow.TechID <> 0 Then
vInspectorHT.Add(vInspRow.TechID.ToString, vInspRow.TechName)
End If
Next
vInspectorList.DataSource = vInspectorHT
vInspectorList.DataTextField = "value"
vInspectorList.DataValueField = "key"
vInspectorList.DataBind()
End If
End Sub
I tried populating the listbox directly using the Listbox.Items.add() method (which is the way I have it now so I could continue solving other problems, and it works!) but I could not find a way to add a value pair. I did try:
vInspectorList.DataTextField = "Select Technician"
vInspectorList.DataValueField = "0"
but that left a listbox without any data.
VS 2008 - Populating Listbox From A Textbox On Another Form
Jul 13, 2011Is it possible to populate a listbox from a textbox on another form? Ive tried searching google but have had no luck.
View 6 RepliesDataSource Controls :: Populating Listbox With Directorysearch Result?
Mar 11, 2010I'm creating a user control that enables users to search AD and add the selected names to a list (which is used to send mail lateron).
The problem is that the search results end up in the Listbox but all as the string "System.DirectoryServices.ResultPropertyValueCollection" in stead of the actual values.
I have no idea why.
This is my code:
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Web Forms :: Custom Validator With A Listbox Not Working?
May 4, 2010I've read quite a few posts here on this issue, but none of the solutions seem to be working for me.
I have a list box and a custom validator that is using a client side function to validate.
There is also a required field validator on the page.
Here's the markup:
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So in any case, i should have an error message on the page and it should not post back, correct?
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What's The Best Way To Databind A Listbox Inside A Custom Control
Sep 22, 2010I have a simple custom control that boils down to a label and a listbox. Selections in the listbox are reflected in the label as comma separated values. My question is what is the best and simplest way to make the page developers experience of working with the custom control exactly mimic the experience of working with just the listbox - when it comes to working with data. For some reason it feels wrong to simply create mirrored properties in the custom control and forward their values to the internal listbox. A small, perhaps unrelated complication is that the final product has to play nice with the forms collection due to the nature of the host application.
View 1 RepliesCustom Server Controls :: ListBox Composite Control DataBind?
Jun 17, 2010I made a composite control that contains a ListBox. I am using the Composite Control throughout my application but I can not bind the listbox in the Compositecontrol. I have setup a Public get to access my listbox in the composite control.
View 3 RepliesForms Data Controls :: ListBox, Array List / Update The Listbox Content?
Mar 26, 2011I am designing a program that will let me enter the name of an item to swap and adds the swap to an array list when a button Add is pressed. Once the item is added to the array list a Sub Procedure should be called which displays the contents of the array list in a list box.
The system will also allow me to remove items from the array list using a Remove button
followed by updating array list.
I have done some part which puts item into the listbox1 which i named lstSwapList.I would need some assistance on the Sub Procedure to display the Value or Description on the other listbox2 which i have also named lstContent,if a value is selected from the listbox1.
I would also want to know how to update the Listbox content,However i hv added a sample of the way i guess it may be.
Any complete solution from anybody on the Sub Procedure and the Update Swap procedure will be greately appreciated.
The script below is what i have done so far.
Partial Class _Default
Inherits System.Web.UI.Page
Protected Sub lstContent_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles lstContent.SelectedIndexChanged
End Sub
Protected Sub lstSwapList_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles lstSwapList.SelectedIndexChanged
End Sub
Protected Sub btnAddSwap_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAddSwap.Click
Dim SwapValue As String = "Sixty Pounds"
Dim Counter As Integer = 8
Dim SwapN0 As Integer
lstSwapList.Items.Add(SwapValue)
lstSwapList.Items.Add(Counter)
lstSwapList.Items.Add(New ListItem("300", "1"))
lstSwapList.Items.Add(New ListItem("ASP.Net", "2"))
lstSwapList.Items.Add(New ListItem("Programming", "3"))
SwapN0 = lstSwapList.SelectedValue
For Counter = 0 To -1
SwapN0 = lstContent.Items.Count
Next
End Sub
Protected Sub btnDeleteSwap_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnDeleteSwap.Click
lstSwapList.Items.Remove(lstSwapList.SelectedValue)
End Sub
Protected Sub btnUpdateSwap_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnUpdateSwap.Click
End Sub
End Class
=======================================
Sub UpdateSwap(ByVal valueA As String, ByVal ValueBAs String, ByVal ValueC As Integer, ByVal ValueD As Date)
Custom Server Controls :: Persist Data In A Dynamically Populated ListBox In A User Control
Aug 19, 2010I am trying to persist data in a dynamically populated ListBox in a user control. Here are the details
I have a user control which contains a a listBox and button. On Page_Load of user control I am populating the ListBox control with some values. On Click of button, I am trying to fetch the values which I have selected in ListBox. Though this seems very simple and straight forward I am unable to fetch values.
My Page_Load Function
void Page_Load(object sender, EventArgs e)
{
If(!IspostBack)
{
listBox.items.Add("Item1");
listBox.items.Add("item2");
listBox.items.Add("item3");
}
}
My Click Function
Protected Void Button1_Click(object sender, EventArgs e)
{
string strValue = listBox.SelectedValue
}
I have placed brake point at Page_Load and on click function, I am seeing that the moment the breakpoint hits Page_Load function (before If (!Ispostback)) , listBox.SelectedIndex is becoming -1.
One more thing here is, I am placing this user control in an SharePoint application page to be specific checkin.aspx page . ( I know this should not be done, but that is the requirement for me)
Web Forms :: Adding Item To Listbox From Another Listbox Taking Way Too Long?
Mar 4, 2010I have two list boxes, one has a list of available users (about 1500 items) and the other is blank. There is a button to add the seleted items from the first list box to the second one. Both of these listboxes are within an update panel and for some reason it takes over 20 seconds for the items to show up in the second listbox.
Is this normal? Is there an alternate, faster way of doing this?
Web Forms :: Error "value Of Type System.web.ui.webcontrols.listbox Cannot Be Converted To Myprojectname.listbox" In Vs 2008
Aug 3, 2010All i did is added an existing webform from vs 2003 project to vs 2008. with Listbox1 control this error is appearing. value of type system.web.ui.webcontrols.listbox cannot be converted to "myprojectname.listbox"
i also have the control defined on the top: Protected WithEvents Listbox1 As System.Web.UI.WebControls.ListBox I have converted lot of pages which were used in vs 2003 to vs 2008 without any problem, also tried to right click teh webform and go to code gen file , but the file is not coming up.
DataSource Controls :: Auto-populated Listbox Based On Selection From Other Listbox?
Feb 22, 2011I'm trying to auto-populate a listbox of zip codes from a database table state_zipcode_plans based on the state a user selects from the previous listbox. I'm getting the error: Must declare the scalar variable @state_code.
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Web Forms :: How To Validate That One Listbox's Number Is Higher Than Or Equal To The Other Listbox's Number
Dec 19, 2010I have been trying to figure out how to use <asp:requiredfieldvalidator> with ValidationExpression but am having a difficult time understanding the syntax of ValidationExpression. I'd like to make sure one textbox's number (1-12) is equal to or higher than the other textbox's (1-12) number. How is this accomplished and what's the syntax of ValidationExpression (hopefully I'm stating the question correctly).
View 2 RepliesGetting Data From ListBox / Read The Selected Field From The Listbox?
Mar 14, 2011how I can read the selected field from the listbox?I have MSAccess table attached to the app.I can get to the properties, but I don't know which property gets me the data of the specific field.In VB it would be "listbox1.Column(x)", where 'x' represents the column number in the listbox1.I am using Microsoft Visual Web Developer 2010 Express
View 2 RepliesTrying To Left Aligh With A Listbox / Gap After The Listbox Ends
Jan 2, 2011So i am trying to left aligh with a listbox.I'm almost there but the problem is that i have a gap after the listbox ends.
"fill the gap" I would like the red color to start right after the listbox.
Code:
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How To Insert A New Item In A Listbox And Then Setfocus On The Listbox New Item On A Button Click Event In C#
Sep 24, 2010I have a listbox which populated from using a datatable. I have a Add button in my page. On clicking the add button I want to insert a blank row in the listbox. This can be done easily by
ListBox_Admin.Items.Add("");
after this is done I want to select this item as in setfocus on this item.How do I do this.
Web Forms :: Populating Dropdownlist Using C#?
Jan 19, 2010I am getting a problem while working with the Dropdownlist in VS2008. I am trying to populate the DDL using c# codding instead of creating DataSource in GUI. The DDL is getting populated as expected, but then I've added a label that will show the current selected item; for this I've written a code in DropDownList1_SelectedIndexChanged() :
Label1.Text = DropDownList1.SelectedValue.ToString();
I hae also enable AutoPostback for the DDL.
I have placed the PopulateDDL() method inside of the Page_Load();
But whenever I select a item, it's always giving only the first item's name as the Lebel.Text.
But when I use GUI and ceate a SqlDataSource and attach that to the DDL all works fine.
What to do??
Web Forms :: Populating DDL Dynamically From GetFiles?
Jan 21, 2010I am populating a data bound control DropDownList with file names from a local folder that resides within a ListView control.
I am able to populate as expected, in testing list is generated - all good in that regard.
However once I set to databind by adding SelectedValue='<%# Bind("ImageFile") %>'the following error occurs
ERROR:Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.
This is the aspx file .. no codebehind:
#CODE SNIP #
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Web Forms :: Populating DropDownList From Database?
Sep 18, 2010I'm really struggling with this tonight (this being exactly what it says on the tin, (or the subject!)).
Code I'm working with right now is:
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Web Forms :: Populating A Text Box From A Link?
Feb 21, 2010I have just built a contact form for a website and it works fine but now I would like the "Subject" textbox to be filled if the user has been redirected to the contact.aspx page from another link.
For example if the user just clicks on the contact us link then the form will be blank but I have some items on the website where there is a link that says "Enquire..." that redirects to the contact.aspx page but I would like the subject textbox to be filled in with the item that it was redirected from?
Web Forms :: Populating Textbox Based On Two Ddl's?
Nov 1, 2010I am just trying to figure out a way to populate a textbox based on the results of two ddls. I have one table that stores the whole data...So an example would be
DDL1 - State
DDL2- City
Textbox(Comments) - "Sometimes the comments would already be on the table...so i will like to populate the ones already in there based on the two ddl's
Web Forms :: Dynamically Populating A Page?
Feb 27, 2011I'm currently building my website and have hit a brick wall. I've not begun coding anything fro this yet as I am unable to get my head around it and not sure where to start.
I've got a database table with a list of town/ county names ( columns are id, town, county).
What I'd like to do is have a template page with set places for town/ county names and then when a particular area is searched for in google/ bing etc my template page with the relevant town/ county name is shown.
I know that's a bit vague so if you have any questions, let me know. One thing I don't want to do is manually create a page for each individual town/ county!
Web Forms :: Populating Textbox From Outside Page?
Aug 18, 2010I want to write an independant class that can fill the fields in an HTML using asp:textbox. I have a class that can pull information from username and send it back to the webform. I would really like to use another, or possibly the same class, to take that data and send it to asp:textbox.text to populate the fields.
My issue is I just can't seem to find anything in my books, or online, that would help me let the class know the form is there, and that it has those fields inside the html code.
Are they objects that I could potentially pass into a new class constructor that I could populate that way?
After accomplishing this my next step would be to use this to create a class to send an email with some of the fields being passed from the form to help fill in the email.